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nest-open-source / nest-learning-thermostat / 6.1 / linux-imx-4.1.15 / b526bc5272c85f970d2fb16d43e197f32de85b80 / . / drivers / staging / lustre / lustre / llite / llite_lib.c
blob: a27af7882170f42924aed9d0685dde3cf24f8211 [file] [log] [blame]
/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 only,
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is included
* in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; If not, see
* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
* GPL HEADER END
*/
/*
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
* Copyright (c) 2011, 2012, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Lustre is a trademark of Sun Microsystems, Inc.
*
* lustre/llite/llite_lib.c
*
* Lustre Light Super operations
*/
#define DEBUG_SUBSYSTEM S_LLITE
#include <linux/module.h>
#include <linux/statfs.h>
#include <linux/types.h>
#include <linux/mm.h>
#include "../include/lustre_lite.h"
#include "../include/lustre_ha.h"
#include "../include/lustre_dlm.h"
#include "../include/lprocfs_status.h"
#include "../include/lustre_disk.h"
#include "../include/lustre_param.h"
#include "../include/lustre_log.h"
#include "../include/cl_object.h"
#include "../include/obd_cksum.h"
#include "llite_internal.h"
struct kmem_cache *ll_file_data_slab;
struct proc_dir_entry *proc_lustre_fs_root;
static LIST_HEAD(ll_super_blocks);
static DEFINE_SPINLOCK(ll_sb_lock);
#ifndef log2
#define log2(n) ffz(~(n))
#endif
static struct ll_sb_info *ll_init_sbi(void)
{
struct ll_sb_info *sbi = NULL;
unsigned long pages;
unsigned long lru_page_max;
struct sysinfo si;
class_uuid_t uuid;
int i;
sbi = kzalloc(sizeof(*sbi), GFP_NOFS);
if (!sbi)
return NULL;
spin_lock_init(&sbi->ll_lock);
mutex_init(&sbi->ll_lco.lco_lock);
spin_lock_init(&sbi->ll_pp_extent_lock);
spin_lock_init(&sbi->ll_process_lock);
sbi->ll_rw_stats_on = 0;
si_meminfo(&si);
pages = si.totalram - si.totalhigh;
if (pages >> (20 - PAGE_CACHE_SHIFT) < 512)
lru_page_max = pages / 2;
else
lru_page_max = (pages / 4) * 3;
/* initialize lru data */
atomic_set(&sbi->ll_cache.ccc_users, 0);
sbi->ll_cache.ccc_lru_max = lru_page_max;
atomic_set(&sbi->ll_cache.ccc_lru_left, lru_page_max);
spin_lock_init(&sbi->ll_cache.ccc_lru_lock);
INIT_LIST_HEAD(&sbi->ll_cache.ccc_lru);
sbi->ll_ra_info.ra_max_pages_per_file = min(pages / 32,
SBI_DEFAULT_READAHEAD_MAX);
sbi->ll_ra_info.ra_max_pages = sbi->ll_ra_info.ra_max_pages_per_file;
sbi->ll_ra_info.ra_max_read_ahead_whole_pages =
SBI_DEFAULT_READAHEAD_WHOLE_MAX;
INIT_LIST_HEAD(&sbi->ll_conn_chain);
INIT_LIST_HEAD(&sbi->ll_orphan_dentry_list);
ll_generate_random_uuid(uuid);
class_uuid_unparse(uuid, &sbi->ll_sb_uuid);
CDEBUG(D_CONFIG, "generated uuid: %s\n", sbi->ll_sb_uuid.uuid);
spin_lock(&ll_sb_lock);
list_add_tail(&sbi->ll_list, &ll_super_blocks);
spin_unlock(&ll_sb_lock);
sbi->ll_flags |= LL_SBI_VERBOSE;
sbi->ll_flags |= LL_SBI_CHECKSUM;
sbi->ll_flags |= LL_SBI_LRU_RESIZE;
for (i = 0; i <= LL_PROCESS_HIST_MAX; i++) {
spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
pp_r_hist.oh_lock);
spin_lock_init(&sbi->ll_rw_extents_info.pp_extents[i].
pp_w_hist.oh_lock);
}
/* metadata statahead is enabled by default */
sbi->ll_sa_max = LL_SA_RPC_DEF;
atomic_set(&sbi->ll_sa_total, 0);
atomic_set(&sbi->ll_sa_wrong, 0);
atomic_set(&sbi->ll_agl_total, 0);
sbi->ll_flags |= LL_SBI_AGL_ENABLED;
return sbi;
}
static void ll_free_sbi(struct super_block *sb)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
if (sbi != NULL) {
spin_lock(&ll_sb_lock);
list_del(&sbi->ll_list);
spin_unlock(&ll_sb_lock);
OBD_FREE(sbi, sizeof(*sbi));
}
}
static int client_common_fill_super(struct super_block *sb, char *md, char *dt,
struct vfsmount *mnt)
{
struct inode *root = NULL;
struct ll_sb_info *sbi = ll_s2sbi(sb);
struct obd_device *obd;
struct obd_capa *oc = NULL;
struct obd_statfs *osfs = NULL;
struct ptlrpc_request *request = NULL;
struct obd_connect_data *data = NULL;
struct obd_uuid *uuid;
struct md_op_data *op_data;
struct lustre_md lmd;
u64 valid;
int size, err, checksum;
obd = class_name2obd(md);
if (!obd) {
CERROR("MD %s: not setup or attached\n", md);
return -EINVAL;
}
data = kzalloc(sizeof(*data), GFP_NOFS);
if (!data)
return -ENOMEM;
osfs = kzalloc(sizeof(*osfs), GFP_NOFS);
if (!osfs) {
OBD_FREE_PTR(data);
return -ENOMEM;
}
if (proc_lustre_fs_root) {
err = lprocfs_register_mountpoint(proc_lustre_fs_root, sb,
dt, md);
if (err < 0)
CERROR("could not register mount in /proc/fs/lustre\n");
}
/* indicate the features supported by this client */
data->ocd_connect_flags = OBD_CONNECT_IBITS | OBD_CONNECT_NODEVOH |
OBD_CONNECT_ATTRFID |
OBD_CONNECT_VERSION | OBD_CONNECT_BRW_SIZE |
OBD_CONNECT_MDS_CAPA | OBD_CONNECT_OSS_CAPA |
OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
OBD_CONNECT_AT | OBD_CONNECT_LOV_V3 |
OBD_CONNECT_RMT_CLIENT | OBD_CONNECT_VBR |
OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH|
OBD_CONNECT_EINPROGRESS |
OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
OBD_CONNECT_LAYOUTLOCK |
OBD_CONNECT_PINGLESS |
OBD_CONNECT_MAX_EASIZE |
OBD_CONNECT_FLOCK_DEAD |
OBD_CONNECT_DISP_STRIPE;
if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
data->ocd_connect_flags |= OBD_CONNECT_SOM;
if (sbi->ll_flags & LL_SBI_LRU_RESIZE)
data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
#ifdef CONFIG_FS_POSIX_ACL
data->ocd_connect_flags |= OBD_CONNECT_ACL | OBD_CONNECT_UMASK;
#endif
if (OBD_FAIL_CHECK(OBD_FAIL_MDC_LIGHTWEIGHT))
/* flag mdc connection as lightweight, only used for test
* purpose, use with care */
data->ocd_connect_flags |= OBD_CONNECT_LIGHTWEIGHT;
data->ocd_ibits_known = MDS_INODELOCK_FULL;
data->ocd_version = LUSTRE_VERSION_CODE;
if (sb->s_flags & MS_RDONLY)
data->ocd_connect_flags |= OBD_CONNECT_RDONLY;
if (sbi->ll_flags & LL_SBI_USER_XATTR)
data->ocd_connect_flags |= OBD_CONNECT_XATTR;
#ifdef HAVE_MS_FLOCK_LOCK
/* force vfs to use lustre handler for flock() calls - bug 10743 */
sb->s_flags |= MS_FLOCK_LOCK;
#endif
#ifdef MS_HAS_NEW_AOPS
sb->s_flags |= MS_HAS_NEW_AOPS;
#endif
if (sbi->ll_flags & LL_SBI_FLOCK)
sbi->ll_fop = &ll_file_operations_flock;
else if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
sbi->ll_fop = &ll_file_operations;
else
sbi->ll_fop = &ll_file_operations_noflock;
/* real client */
data->ocd_connect_flags |= OBD_CONNECT_REAL;
if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
data->ocd_brw_size = MD_MAX_BRW_SIZE;
err = obd_connect(NULL, &sbi->ll_md_exp, obd, &sbi->ll_sb_uuid,
data, NULL);
if (err == -EBUSY) {
LCONSOLE_ERROR_MSG(0x14f, "An MDT (md %s) is performing recovery, of which this client is not a part. Please wait for recovery to complete, abort, or time out.\n",
md);
goto out;
} else if (err) {
CERROR("cannot connect to %s: rc = %d\n", md, err);
goto out;
}
sbi->ll_md_exp->exp_connect_data = *data;
err = obd_fid_init(sbi->ll_md_exp->exp_obd, sbi->ll_md_exp,
LUSTRE_SEQ_METADATA);
if (err) {
CERROR("%s: Can't init metadata layer FID infrastructure, rc = %d\n",
sbi->ll_md_exp->exp_obd->obd_name, err);
goto out_md;
}
/* For mount, we only need fs info from MDT0, and also in DNE, it
* can make sure the client can be mounted as long as MDT0 is
* available */
err = obd_statfs(NULL, sbi->ll_md_exp, osfs,
cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
OBD_STATFS_FOR_MDT0);
if (err)
goto out_md_fid;
/* This needs to be after statfs to ensure connect has finished.
* Note that "data" does NOT contain the valid connect reply.
* If connecting to a 1.8 server there will be no LMV device, so
* we can access the MDC export directly and exp_connect_flags will
* be non-zero, but if accessing an upgraded 2.1 server it will
* have the correct flags filled in.
* XXX: fill in the LMV exp_connect_flags from MDC(s). */
valid = exp_connect_flags(sbi->ll_md_exp) & CLIENT_CONNECT_MDT_REQD;
if (exp_connect_flags(sbi->ll_md_exp) != 0 &&
valid != CLIENT_CONNECT_MDT_REQD) {
char *buf;
buf = kzalloc(PAGE_CACHE_SIZE, GFP_KERNEL);
obd_connect_flags2str(buf, PAGE_CACHE_SIZE,
valid ^ CLIENT_CONNECT_MDT_REQD, ",");
LCONSOLE_ERROR_MSG(0x170, "Server %s does not support feature(s) needed for correct operation of this client (%s). Please upgrade server or downgrade client.\n",
sbi->ll_md_exp->exp_obd->obd_name, buf);
OBD_FREE(buf, PAGE_CACHE_SIZE);
err = -EPROTO;
goto out_md_fid;
}
size = sizeof(*data);
err = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_CONN_DATA),
KEY_CONN_DATA, &size, data, NULL);
if (err) {
CERROR("%s: Get connect data failed: rc = %d\n",
sbi->ll_md_exp->exp_obd->obd_name, err);
goto out_md_fid;
}
LASSERT(osfs->os_bsize);
sb->s_blocksize = osfs->os_bsize;
sb->s_blocksize_bits = log2(osfs->os_bsize);
sb->s_magic = LL_SUPER_MAGIC;
sb->s_maxbytes = MAX_LFS_FILESIZE;
sbi->ll_namelen = osfs->os_namelen;
sbi->ll_max_rw_chunk = LL_DEFAULT_MAX_RW_CHUNK;
if ((sbi->ll_flags & LL_SBI_USER_XATTR) &&
!(data->ocd_connect_flags & OBD_CONNECT_XATTR)) {
LCONSOLE_INFO("Disabling user_xattr feature because it is not supported on the server\n");
sbi->ll_flags &= ~LL_SBI_USER_XATTR;
}
if (data->ocd_connect_flags & OBD_CONNECT_ACL) {
#ifdef MS_POSIXACL
sb->s_flags |= MS_POSIXACL;
#endif
sbi->ll_flags |= LL_SBI_ACL;
} else {
LCONSOLE_INFO("client wants to enable acl, but mdt not!\n");
#ifdef MS_POSIXACL
sb->s_flags &= ~MS_POSIXACL;
#endif
sbi->ll_flags &= ~LL_SBI_ACL;
}
if (data->ocd_connect_flags & OBD_CONNECT_RMT_CLIENT) {
if (!(sbi->ll_flags & LL_SBI_RMT_CLIENT)) {
sbi->ll_flags |= LL_SBI_RMT_CLIENT;
LCONSOLE_INFO("client is set as remote by default.\n");
}
} else {
if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
sbi->ll_flags &= ~LL_SBI_RMT_CLIENT;
LCONSOLE_INFO("client claims to be remote, but server rejected, forced to be local.\n");
}
}
if (data->ocd_connect_flags & OBD_CONNECT_MDS_CAPA) {
LCONSOLE_INFO("client enabled MDS capability!\n");
sbi->ll_flags |= LL_SBI_MDS_CAPA;
}
if (data->ocd_connect_flags & OBD_CONNECT_OSS_CAPA) {
LCONSOLE_INFO("client enabled OSS capability!\n");
sbi->ll_flags |= LL_SBI_OSS_CAPA;
}
if (data->ocd_connect_flags & OBD_CONNECT_64BITHASH)
sbi->ll_flags |= LL_SBI_64BIT_HASH;
if (data->ocd_connect_flags & OBD_CONNECT_BRW_SIZE)
sbi->ll_md_brw_size = data->ocd_brw_size;
else
sbi->ll_md_brw_size = PAGE_CACHE_SIZE;
if (data->ocd_connect_flags & OBD_CONNECT_LAYOUTLOCK) {
LCONSOLE_INFO("Layout lock feature supported.\n");
sbi->ll_flags |= LL_SBI_LAYOUT_LOCK;
}
if (data->ocd_ibits_known & MDS_INODELOCK_XATTR) {
if (!(data->ocd_connect_flags & OBD_CONNECT_MAX_EASIZE)) {
LCONSOLE_INFO(
"%s: disabling xattr cache due to unknown maximum xattr size.\n",
dt);
} else {
sbi->ll_flags |= LL_SBI_XATTR_CACHE;
sbi->ll_xattr_cache_enabled = 1;
}
}
obd = class_name2obd(dt);
if (!obd) {
CERROR("DT %s: not setup or attached\n", dt);
err = -ENODEV;
goto out_md_fid;
}
data->ocd_connect_flags = OBD_CONNECT_GRANT | OBD_CONNECT_VERSION |
OBD_CONNECT_REQPORTAL | OBD_CONNECT_BRW_SIZE |
OBD_CONNECT_CANCELSET | OBD_CONNECT_FID |
OBD_CONNECT_SRVLOCK | OBD_CONNECT_TRUNCLOCK|
OBD_CONNECT_AT | OBD_CONNECT_RMT_CLIENT |
OBD_CONNECT_OSS_CAPA | OBD_CONNECT_VBR|
OBD_CONNECT_FULL20 | OBD_CONNECT_64BITHASH |
OBD_CONNECT_MAXBYTES |
OBD_CONNECT_EINPROGRESS |
OBD_CONNECT_JOBSTATS | OBD_CONNECT_LVB_TYPE |
OBD_CONNECT_LAYOUTLOCK | OBD_CONNECT_PINGLESS;
if (sbi->ll_flags & LL_SBI_SOM_PREVIEW)
data->ocd_connect_flags |= OBD_CONNECT_SOM;
if (!OBD_FAIL_CHECK(OBD_FAIL_OSC_CONNECT_CKSUM)) {
/* OBD_CONNECT_CKSUM should always be set, even if checksums are
* disabled by default, because it can still be enabled on the
* fly via /proc. As a consequence, we still need to come to an
* agreement on the supported algorithms at connect time */
data->ocd_connect_flags |= OBD_CONNECT_CKSUM;
if (OBD_FAIL_CHECK(OBD_FAIL_OSC_CKSUM_ADLER_ONLY))
data->ocd_cksum_types = OBD_CKSUM_ADLER;
else
data->ocd_cksum_types = cksum_types_supported_client();
}
data->ocd_connect_flags |= OBD_CONNECT_LRU_RESIZE;
if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
data->ocd_connect_flags |= OBD_CONNECT_RMT_CLIENT_FORCE;
CDEBUG(D_RPCTRACE, "ocd_connect_flags: %#llx ocd_version: %d ocd_grant: %d\n",
data->ocd_connect_flags,
data->ocd_version, data->ocd_grant);
obd->obd_upcall.onu_owner = &sbi->ll_lco;
obd->obd_upcall.onu_upcall = cl_ocd_update;
data->ocd_brw_size = DT_MAX_BRW_SIZE;
err = obd_connect(NULL, &sbi->ll_dt_exp, obd, &sbi->ll_sb_uuid, data,
NULL);
if (err == -EBUSY) {
LCONSOLE_ERROR_MSG(0x150, "An OST (dt %s) is performing recovery, of which this client is not a part. Please wait for recovery to complete, abort, or time out.\n",
dt);
goto out_md;
} else if (err) {
CERROR("%s: Cannot connect to %s: rc = %d\n",
sbi->ll_dt_exp->exp_obd->obd_name, dt, err);
goto out_md;
}
sbi->ll_dt_exp->exp_connect_data = *data;
err = obd_fid_init(sbi->ll_dt_exp->exp_obd, sbi->ll_dt_exp,
LUSTRE_SEQ_METADATA);
if (err) {
CERROR("%s: Can't init data layer FID infrastructure, rc = %d\n",
sbi->ll_dt_exp->exp_obd->obd_name, err);
goto out_dt;
}
mutex_lock(&sbi->ll_lco.lco_lock);
sbi->ll_lco.lco_flags = data->ocd_connect_flags;
sbi->ll_lco.lco_md_exp = sbi->ll_md_exp;
sbi->ll_lco.lco_dt_exp = sbi->ll_dt_exp;
mutex_unlock(&sbi->ll_lco.lco_lock);
fid_zero(&sbi->ll_root_fid);
err = md_getstatus(sbi->ll_md_exp, &sbi->ll_root_fid, &oc);
if (err) {
CERROR("cannot mds_connect: rc = %d\n", err);
goto out_lock_cn_cb;
}
if (!fid_is_sane(&sbi->ll_root_fid)) {
CERROR("%s: Invalid root fid "DFID" during mount\n",
sbi->ll_md_exp->exp_obd->obd_name,
PFID(&sbi->ll_root_fid));
err = -EINVAL;
goto out_lock_cn_cb;
}
CDEBUG(D_SUPER, "rootfid "DFID"\n", PFID(&sbi->ll_root_fid));
sb->s_op = &lustre_super_operations;
#if THREAD_SIZE >= 8192 /*b=17630*/
sb->s_export_op = &lustre_export_operations;
#endif
/* make root inode
* XXX: move this to after cbd setup? */
valid = OBD_MD_FLGETATTR | OBD_MD_FLBLOCKS | OBD_MD_FLMDSCAPA;
if (sbi->ll_flags & LL_SBI_RMT_CLIENT)
valid |= OBD_MD_FLRMTPERM;
else if (sbi->ll_flags & LL_SBI_ACL)
valid |= OBD_MD_FLACL;
op_data = kzalloc(sizeof(*op_data), GFP_NOFS);
if (!op_data) {
err = -ENOMEM;
goto out_lock_cn_cb;
}
op_data->op_fid1 = sbi->ll_root_fid;
op_data->op_mode = 0;
op_data->op_capa1 = oc;
op_data->op_valid = valid;
err = md_getattr(sbi->ll_md_exp, op_data, &request);
if (oc)
capa_put(oc);
OBD_FREE_PTR(op_data);
if (err) {
CERROR("%s: md_getattr failed for root: rc = %d\n",
sbi->ll_md_exp->exp_obd->obd_name, err);
goto out_lock_cn_cb;
}
err = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
sbi->ll_md_exp, &lmd);
if (err) {
CERROR("failed to understand root inode md: rc = %d\n", err);
ptlrpc_req_finished(request);
goto out_lock_cn_cb;
}
LASSERT(fid_is_sane(&sbi->ll_root_fid));
root = ll_iget(sb, cl_fid_build_ino(&sbi->ll_root_fid,
sbi->ll_flags & LL_SBI_32BIT_API),
&lmd);
md_free_lustre_md(sbi->ll_md_exp, &lmd);
ptlrpc_req_finished(request);
if (root == NULL || IS_ERR(root)) {
if (lmd.lsm)
obd_free_memmd(sbi->ll_dt_exp, &lmd.lsm);
#ifdef CONFIG_FS_POSIX_ACL
if (lmd.posix_acl) {
posix_acl_release(lmd.posix_acl);
lmd.posix_acl = NULL;
}
#endif
err = IS_ERR(root) ? PTR_ERR(root) : -EBADF;
root = NULL;
CERROR("lustre_lite: bad iget4 for root\n");
goto out_root;
}
err = ll_close_thread_start(&sbi->ll_lcq);
if (err) {
CERROR("cannot start close thread: rc %d\n", err);
goto out_root;
}
#ifdef CONFIG_FS_POSIX_ACL
if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
rct_init(&sbi->ll_rct);
et_init(&sbi->ll_et);
}
#endif
checksum = sbi->ll_flags & LL_SBI_CHECKSUM;
err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CHECKSUM),
KEY_CHECKSUM, sizeof(checksum), &checksum,
NULL);
cl_sb_init(sb);
err = obd_set_info_async(NULL, sbi->ll_dt_exp, sizeof(KEY_CACHE_SET),
KEY_CACHE_SET, sizeof(sbi->ll_cache),
&sbi->ll_cache, NULL);
sb->s_root = d_make_root(root);
if (sb->s_root == NULL) {
CERROR("%s: can't make root dentry\n",
ll_get_fsname(sb, NULL, 0));
err = -ENOMEM;
goto out_lock_cn_cb;
}
sbi->ll_sdev_orig = sb->s_dev;
/* We set sb->s_dev equal on all lustre clients in order to support
* NFS export clustering. NFSD requires that the FSID be the same
* on all clients. */
/* s_dev is also used in lt_compare() to compare two fs, but that is
* only a node-local comparison. */
uuid = obd_get_uuid(sbi->ll_md_exp);
if (uuid != NULL) {
sb->s_dev = get_uuid2int(uuid->uuid, strlen(uuid->uuid));
get_uuid2fsid(uuid->uuid, strlen(uuid->uuid), &sbi->ll_fsid);
}
if (data != NULL)
OBD_FREE_PTR(data);
if (osfs != NULL)
OBD_FREE_PTR(osfs);
return err;
out_root:
iput(root);
out_lock_cn_cb:
obd_fid_fini(sbi->ll_dt_exp->exp_obd);
out_dt:
obd_disconnect(sbi->ll_dt_exp);
sbi->ll_dt_exp = NULL;
/* Make sure all OScs are gone, since cl_cache is accessing sbi. */
obd_zombie_barrier();
out_md_fid:
obd_fid_fini(sbi->ll_md_exp->exp_obd);
out_md:
obd_disconnect(sbi->ll_md_exp);
sbi->ll_md_exp = NULL;
out:
if (data != NULL)
OBD_FREE_PTR(data);
if (osfs != NULL)
OBD_FREE_PTR(osfs);
lprocfs_unregister_mountpoint(sbi);
return err;
}
int ll_get_max_mdsize(struct ll_sb_info *sbi, int *lmmsize)
{
int size, rc;
*lmmsize = obd_size_diskmd(sbi->ll_dt_exp, NULL);
size = sizeof(int);
rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_EASIZE),
KEY_MAX_EASIZE, &size, lmmsize, NULL);
if (rc)
CERROR("Get max mdsize error rc %d\n", rc);
return rc;
}
int ll_get_default_mdsize(struct ll_sb_info *sbi, int *lmmsize)
{
int size, rc;
size = sizeof(int);
rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_EASIZE),
KEY_DEFAULT_EASIZE, &size, lmmsize, NULL);
if (rc)
CERROR("Get default mdsize error rc %d\n", rc);
return rc;
}
int ll_get_max_cookiesize(struct ll_sb_info *sbi, int *lmmsize)
{
int size, rc;
size = sizeof(int);
rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_MAX_COOKIESIZE),
KEY_MAX_COOKIESIZE, &size, lmmsize, NULL);
if (rc)
CERROR("Get max cookiesize error rc %d\n", rc);
return rc;
}
int ll_get_default_cookiesize(struct ll_sb_info *sbi, int *lmmsize)
{
int size, rc;
size = sizeof(int);
rc = obd_get_info(NULL, sbi->ll_md_exp, sizeof(KEY_DEFAULT_COOKIESIZE),
KEY_DEFAULT_COOKIESIZE, &size, lmmsize, NULL);
if (rc)
CERROR("Get default cookiesize error rc %d\n", rc);
return rc;
}
static void client_common_put_super(struct super_block *sb)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
#ifdef CONFIG_FS_POSIX_ACL
if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
et_fini(&sbi->ll_et);
rct_fini(&sbi->ll_rct);
}
#endif
ll_close_thread_shutdown(sbi->ll_lcq);
cl_sb_fini(sb);
list_del(&sbi->ll_conn_chain);
obd_fid_fini(sbi->ll_dt_exp->exp_obd);
obd_disconnect(sbi->ll_dt_exp);
sbi->ll_dt_exp = NULL;
/* wait till all OSCs are gone, since cl_cache is accessing sbi.
* see LU-2543. */
obd_zombie_barrier();
lprocfs_unregister_mountpoint(sbi);
obd_fid_fini(sbi->ll_md_exp->exp_obd);
obd_disconnect(sbi->ll_md_exp);
sbi->ll_md_exp = NULL;
}
void ll_kill_super(struct super_block *sb)
{
struct ll_sb_info *sbi;
/* not init sb ?*/
if (!(sb->s_flags & MS_ACTIVE))
return;
sbi = ll_s2sbi(sb);
/* we need to restore s_dev from changed for clustered NFS before
* put_super because new kernels have cached s_dev and change sb->s_dev
* in put_super not affected real removing devices */
if (sbi) {
sb->s_dev = sbi->ll_sdev_orig;
sbi->ll_umounting = 1;
}
}
static inline int ll_set_opt(const char *opt, char *data, int fl)
{
if (strncmp(opt, data, strlen(opt)) != 0)
return 0;
else
return fl;
}
/* non-client-specific mount options are parsed in lmd_parse */
static int ll_options(char *options, int *flags)
{
int tmp;
char *s1 = options, *s2;
if (!options)
return 0;
CDEBUG(D_CONFIG, "Parsing opts %s\n", options);
while (*s1) {
CDEBUG(D_SUPER, "next opt=%s\n", s1);
tmp = ll_set_opt("nolock", s1, LL_SBI_NOLCK);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("flock", s1, LL_SBI_FLOCK);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("localflock", s1, LL_SBI_LOCALFLOCK);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("noflock", s1, LL_SBI_FLOCK|LL_SBI_LOCALFLOCK);
if (tmp) {
*flags &= ~tmp;
goto next;
}
tmp = ll_set_opt("user_xattr", s1, LL_SBI_USER_XATTR);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("nouser_xattr", s1, LL_SBI_USER_XATTR);
if (tmp) {
*flags &= ~tmp;
goto next;
}
tmp = ll_set_opt("remote_client", s1, LL_SBI_RMT_CLIENT);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("user_fid2path", s1, LL_SBI_USER_FID2PATH);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("nouser_fid2path", s1, LL_SBI_USER_FID2PATH);
if (tmp) {
*flags &= ~tmp;
goto next;
}
tmp = ll_set_opt("checksum", s1, LL_SBI_CHECKSUM);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("nochecksum", s1, LL_SBI_CHECKSUM);
if (tmp) {
*flags &= ~tmp;
goto next;
}
tmp = ll_set_opt("lruresize", s1, LL_SBI_LRU_RESIZE);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("nolruresize", s1, LL_SBI_LRU_RESIZE);
if (tmp) {
*flags &= ~tmp;
goto next;
}
tmp = ll_set_opt("lazystatfs", s1, LL_SBI_LAZYSTATFS);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("nolazystatfs", s1, LL_SBI_LAZYSTATFS);
if (tmp) {
*flags &= ~tmp;
goto next;
}
tmp = ll_set_opt("som_preview", s1, LL_SBI_SOM_PREVIEW);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("32bitapi", s1, LL_SBI_32BIT_API);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("verbose", s1, LL_SBI_VERBOSE);
if (tmp) {
*flags |= tmp;
goto next;
}
tmp = ll_set_opt("noverbose", s1, LL_SBI_VERBOSE);
if (tmp) {
*flags &= ~tmp;
goto next;
}
LCONSOLE_ERROR_MSG(0x152, "Unknown option '%s', won't mount.\n",
s1);
return -EINVAL;
next:
/* Find next opt */
s2 = strchr(s1, ',');
if (s2 == NULL)
break;
s1 = s2 + 1;
}
return 0;
}
void ll_lli_init(struct ll_inode_info *lli)
{
lli->lli_inode_magic = LLI_INODE_MAGIC;
lli->lli_flags = 0;
lli->lli_ioepoch = 0;
lli->lli_maxbytes = MAX_LFS_FILESIZE;
spin_lock_init(&lli->lli_lock);
lli->lli_posix_acl = NULL;
lli->lli_remote_perms = NULL;
mutex_init(&lli->lli_rmtperm_mutex);
/* Do not set lli_fid, it has been initialized already. */
fid_zero(&lli->lli_pfid);
INIT_LIST_HEAD(&lli->lli_close_list);
INIT_LIST_HEAD(&lli->lli_oss_capas);
atomic_set(&lli->lli_open_count, 0);
lli->lli_mds_capa = NULL;
lli->lli_rmtperm_time = 0;
lli->lli_pending_och = NULL;
lli->lli_mds_read_och = NULL;
lli->lli_mds_write_och = NULL;
lli->lli_mds_exec_och = NULL;
lli->lli_open_fd_read_count = 0;
lli->lli_open_fd_write_count = 0;
lli->lli_open_fd_exec_count = 0;
mutex_init(&lli->lli_och_mutex);
spin_lock_init(&lli->lli_agl_lock);
lli->lli_has_smd = false;
spin_lock_init(&lli->lli_layout_lock);
ll_layout_version_set(lli, LL_LAYOUT_GEN_NONE);
lli->lli_clob = NULL;
init_rwsem(&lli->lli_xattrs_list_rwsem);
mutex_init(&lli->lli_xattrs_enq_lock);
LASSERT(lli->lli_vfs_inode.i_mode != 0);
if (S_ISDIR(lli->lli_vfs_inode.i_mode)) {
mutex_init(&lli->lli_readdir_mutex);
lli->lli_opendir_key = NULL;
lli->lli_sai = NULL;
spin_lock_init(&lli->lli_sa_lock);
lli->lli_opendir_pid = 0;
} else {
mutex_init(&lli->lli_size_mutex);
lli->lli_symlink_name = NULL;
init_rwsem(&lli->lli_trunc_sem);
mutex_init(&lli->lli_write_mutex);
init_rwsem(&lli->lli_glimpse_sem);
lli->lli_glimpse_time = 0;
INIT_LIST_HEAD(&lli->lli_agl_list);
lli->lli_agl_index = 0;
lli->lli_async_rc = 0;
}
mutex_init(&lli->lli_layout_mutex);
}
static inline int ll_bdi_register(struct backing_dev_info *bdi)
{
static atomic_t ll_bdi_num = ATOMIC_INIT(0);
bdi->name = "lustre";
return bdi_register(bdi, NULL, "lustre-%d",
atomic_inc_return(&ll_bdi_num));
}
int ll_fill_super(struct super_block *sb, struct vfsmount *mnt)
{
struct lustre_profile *lprof = NULL;
struct lustre_sb_info *lsi = s2lsi(sb);
struct ll_sb_info *sbi;
char *dt = NULL, *md = NULL;
char *profilenm = get_profile_name(sb);
struct config_llog_instance *cfg;
/* %p for void* in printf needs 16+2 characters: 0xffffffffffffffff */
const int instlen = sizeof(cfg->cfg_instance) * 2 + 2;
int err;
CDEBUG(D_VFSTRACE, "VFS Op: sb %p\n", sb);
cfg = kzalloc(sizeof(*cfg), GFP_NOFS);
if (!cfg)
return -ENOMEM;
try_module_get(THIS_MODULE);
/* client additional sb info */
lsi->lsi_llsbi = sbi = ll_init_sbi();
if (!sbi) {
module_put(THIS_MODULE);
OBD_FREE_PTR(cfg);
return -ENOMEM;
}
err = ll_options(lsi->lsi_lmd->lmd_opts, &sbi->ll_flags);
if (err)
goto out_free;
err = bdi_init(&lsi->lsi_bdi);
if (err)
goto out_free;
lsi->lsi_flags |= LSI_BDI_INITIALIZED;
lsi->lsi_bdi.capabilities = 0;
err = ll_bdi_register(&lsi->lsi_bdi);
if (err)
goto out_free;
sb->s_bdi = &lsi->lsi_bdi;
/* kernel >= 2.6.38 store dentry operations in sb->s_d_op. */
sb->s_d_op = &ll_d_ops;
/* Generate a string unique to this super, in case some joker tries
to mount the same fs at two mount points.
Use the address of the super itself.*/
cfg->cfg_instance = sb;
cfg->cfg_uuid = lsi->lsi_llsbi->ll_sb_uuid;
cfg->cfg_callback = class_config_llog_handler;
/* set up client obds */
err = lustre_process_log(sb, profilenm, cfg);
if (err < 0) {
CERROR("Unable to process log: %d\n", err);
goto out_free;
}
/* Profile set with LCFG_MOUNTOPT so we can find our mdc and osc obds */
lprof = class_get_profile(profilenm);
if (lprof == NULL) {
LCONSOLE_ERROR_MSG(0x156, "The client profile '%s' could not be read from the MGS. Does that filesystem exist?\n",
profilenm);
err = -EINVAL;
goto out_free;
}
CDEBUG(D_CONFIG, "Found profile %s: mdc=%s osc=%s\n", profilenm,
lprof->lp_md, lprof->lp_dt);
dt = kasprintf(GFP_NOFS, "%s-%p", lprof->lp_dt, cfg->cfg_instance);
if (!dt) {
err = -ENOMEM;
goto out_free;
}
md = kasprintf(GFP_NOFS, "%s-%p", lprof->lp_md, cfg->cfg_instance);
if (!md) {
err = -ENOMEM;
goto out_free;
}
/* connections, registrations, sb setup */
err = client_common_fill_super(sb, md, dt, mnt);
out_free:
if (md)
OBD_FREE(md, strlen(lprof->lp_md) + instlen + 2);
if (dt)
OBD_FREE(dt, strlen(lprof->lp_dt) + instlen + 2);
if (err)
ll_put_super(sb);
else if (sbi->ll_flags & LL_SBI_VERBOSE)
LCONSOLE_WARN("Mounted %s\n", profilenm);
OBD_FREE_PTR(cfg);
return err;
} /* ll_fill_super */
void ll_put_super(struct super_block *sb)
{
struct config_llog_instance cfg, params_cfg;
struct obd_device *obd;
struct lustre_sb_info *lsi = s2lsi(sb);
struct ll_sb_info *sbi = ll_s2sbi(sb);
char *profilenm = get_profile_name(sb);
int next, force = 1;
CDEBUG(D_VFSTRACE, "VFS Op: sb %p - %s\n", sb, profilenm);
ll_print_capa_stat(sbi);
cfg.cfg_instance = sb;
lustre_end_log(sb, profilenm, &cfg);
params_cfg.cfg_instance = sb;
lustre_end_log(sb, PARAMS_FILENAME, &params_cfg);
if (sbi->ll_md_exp) {
obd = class_exp2obd(sbi->ll_md_exp);
if (obd)
force = obd->obd_force;
}
/* We need to set force before the lov_disconnect in
lustre_common_put_super, since l_d cleans up osc's as well. */
if (force) {
next = 0;
while ((obd = class_devices_in_group(&sbi->ll_sb_uuid,
&next)) != NULL) {
obd->obd_force = force;
}
}
if (sbi->ll_lcq) {
/* Only if client_common_fill_super succeeded */
client_common_put_super(sb);
}
next = 0;
while ((obd = class_devices_in_group(&sbi->ll_sb_uuid, &next)))
class_manual_cleanup(obd);
if (sbi->ll_flags & LL_SBI_VERBOSE)
LCONSOLE_WARN("Unmounted %s\n", profilenm ? profilenm : "");
if (profilenm)
class_del_profile(profilenm);
if (lsi->lsi_flags & LSI_BDI_INITIALIZED) {
bdi_destroy(&lsi->lsi_bdi);
lsi->lsi_flags &= ~LSI_BDI_INITIALIZED;
}
ll_free_sbi(sb);
lsi->lsi_llsbi = NULL;
lustre_common_put_super(sb);
module_put(THIS_MODULE);
} /* client_put_super */
struct inode *ll_inode_from_resource_lock(struct ldlm_lock *lock)
{
struct inode *inode = NULL;
/* NOTE: we depend on atomic igrab() -bzzz */
lock_res_and_lock(lock);
if (lock->l_resource->lr_lvb_inode) {
struct ll_inode_info *lli;
lli = ll_i2info(lock->l_resource->lr_lvb_inode);
if (lli->lli_inode_magic == LLI_INODE_MAGIC) {
inode = igrab(lock->l_resource->lr_lvb_inode);
} else {
inode = lock->l_resource->lr_lvb_inode;
LDLM_DEBUG_LIMIT(inode->i_state & I_FREEING ? D_INFO :
D_WARNING, lock, "lr_lvb_inode %p is bogus: magic %08x",
lock->l_resource->lr_lvb_inode,
lli->lli_inode_magic);
inode = NULL;
}
}
unlock_res_and_lock(lock);
return inode;
}
void ll_clear_inode(struct inode *inode)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct ll_sb_info *sbi = ll_i2sbi(inode);
CDEBUG(D_VFSTRACE, "VFS Op:inode=%lu/%u(%p)\n", inode->i_ino,
inode->i_generation, inode);
if (S_ISDIR(inode->i_mode)) {
/* these should have been cleared in ll_file_release */
LASSERT(lli->lli_opendir_key == NULL);
LASSERT(lli->lli_sai == NULL);
LASSERT(lli->lli_opendir_pid == 0);
}
spin_lock(&lli->lli_lock);
ll_i2info(inode)->lli_flags &= ~LLIF_MDS_SIZE_LOCK;
spin_unlock(&lli->lli_lock);
md_null_inode(sbi->ll_md_exp, ll_inode2fid(inode));
LASSERT(!lli->lli_open_fd_write_count);
LASSERT(!lli->lli_open_fd_read_count);
LASSERT(!lli->lli_open_fd_exec_count);
if (lli->lli_mds_write_och)
ll_md_real_close(inode, FMODE_WRITE);
if (lli->lli_mds_exec_och)
ll_md_real_close(inode, FMODE_EXEC);
if (lli->lli_mds_read_och)
ll_md_real_close(inode, FMODE_READ);
if (S_ISLNK(inode->i_mode) && lli->lli_symlink_name) {
OBD_FREE(lli->lli_symlink_name,
strlen(lli->lli_symlink_name) + 1);
lli->lli_symlink_name = NULL;
}
ll_xattr_cache_destroy(inode);
if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
LASSERT(lli->lli_posix_acl == NULL);
if (lli->lli_remote_perms) {
free_rmtperm_hash(lli->lli_remote_perms);
lli->lli_remote_perms = NULL;
}
}
#ifdef CONFIG_FS_POSIX_ACL
else if (lli->lli_posix_acl) {
LASSERT(atomic_read(&lli->lli_posix_acl->a_refcount) == 1);
LASSERT(lli->lli_remote_perms == NULL);
posix_acl_release(lli->lli_posix_acl);
lli->lli_posix_acl = NULL;
}
#endif
lli->lli_inode_magic = LLI_INODE_DEAD;
ll_clear_inode_capas(inode);
if (!S_ISDIR(inode->i_mode))
LASSERT(list_empty(&lli->lli_agl_list));
/*
* XXX This has to be done before lsm is freed below, because
* cl_object still uses inode lsm.
*/
cl_inode_fini(inode);
lli->lli_has_smd = false;
}
static int ll_md_setattr(struct dentry *dentry, struct md_op_data *op_data,
struct md_open_data **mod)
{
struct lustre_md md;
struct inode *inode = d_inode(dentry);
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct ptlrpc_request *request = NULL;
int rc, ia_valid;
op_data = ll_prep_md_op_data(op_data, inode, NULL, NULL, 0, 0,
LUSTRE_OPC_ANY, NULL);
if (IS_ERR(op_data))
return PTR_ERR(op_data);
rc = md_setattr(sbi->ll_md_exp, op_data, NULL, 0, NULL, 0,
&request, mod);
if (rc) {
ptlrpc_req_finished(request);
if (rc == -ENOENT) {
clear_nlink(inode);
/* Unlinked special device node? Or just a race?
* Pretend we done everything. */
if (!S_ISREG(inode->i_mode) &&
!S_ISDIR(inode->i_mode)) {
ia_valid = op_data->op_attr.ia_valid;
op_data->op_attr.ia_valid &= ~TIMES_SET_FLAGS;
rc = simple_setattr(dentry, &op_data->op_attr);
op_data->op_attr.ia_valid = ia_valid;
}
} else if (rc != -EPERM && rc != -EACCES && rc != -ETXTBSY) {
CERROR("md_setattr fails: rc = %d\n", rc);
}
return rc;
}
rc = md_get_lustre_md(sbi->ll_md_exp, request, sbi->ll_dt_exp,
sbi->ll_md_exp, &md);
if (rc) {
ptlrpc_req_finished(request);
return rc;
}
ia_valid = op_data->op_attr.ia_valid;
/* inode size will be in ll_setattr_ost, can't do it now since dirty
* cache is not cleared yet. */
op_data->op_attr.ia_valid &= ~(TIMES_SET_FLAGS | ATTR_SIZE);
rc = simple_setattr(dentry, &op_data->op_attr);
op_data->op_attr.ia_valid = ia_valid;
/* Extract epoch data if obtained. */
op_data->op_handle = md.body->handle;
op_data->op_ioepoch = md.body->ioepoch;
ll_update_inode(inode, &md);
ptlrpc_req_finished(request);
return rc;
}
/* Close IO epoch and send Size-on-MDS attribute update. */
static int ll_setattr_done_writing(struct inode *inode,
struct md_op_data *op_data,
struct md_open_data *mod)
{
struct ll_inode_info *lli = ll_i2info(inode);
int rc = 0;
LASSERT(op_data != NULL);
if (!S_ISREG(inode->i_mode))
return 0;
CDEBUG(D_INODE, "Epoch %llu closed on "DFID" for truncate\n",
op_data->op_ioepoch, PFID(&lli->lli_fid));
op_data->op_flags = MF_EPOCH_CLOSE;
ll_done_writing_attr(inode, op_data);
ll_pack_inode2opdata(inode, op_data, NULL);
rc = md_done_writing(ll_i2sbi(inode)->ll_md_exp, op_data, mod);
if (rc == -EAGAIN) {
/* MDS has instructed us to obtain Size-on-MDS attribute
* from OSTs and send setattr to back to MDS. */
rc = ll_som_update(inode, op_data);
} else if (rc) {
CERROR("inode %lu mdc truncate failed: rc = %d\n",
inode->i_ino, rc);
}
return rc;
}
static int ll_setattr_ost(struct inode *inode, struct iattr *attr)
{
struct obd_capa *capa;
int rc;
if (attr->ia_valid & ATTR_SIZE)
capa = ll_osscapa_get(inode, CAPA_OPC_OSS_TRUNC);
else
capa = ll_mdscapa_get(inode);
rc = cl_setattr_ost(inode, attr, capa);
if (attr->ia_valid & ATTR_SIZE)
ll_truncate_free_capa(capa);
else
capa_put(capa);
return rc;
}
/* If this inode has objects allocated to it (lsm != NULL), then the OST
* object(s) determine the file size and mtime. Otherwise, the MDS will
* keep these values until such a time that objects are allocated for it.
* We do the MDS operations first, as it is checking permissions for us.
* We don't to the MDS RPC if there is nothing that we want to store there,
* otherwise there is no harm in updating mtime/atime on the MDS if we are
* going to do an RPC anyways.
*
* If we are doing a truncate, we will send the mtime and ctime updates
* to the OST with the punch RPC, otherwise we do an explicit setattr RPC.
* I don't believe it is possible to get e.g. ATTR_MTIME_SET and ATTR_SIZE
* at the same time.
*
* In case of HSMimport, we only set attr on MDS.
*/
int ll_setattr_raw(struct dentry *dentry, struct iattr *attr, bool hsm_import)
{
struct inode *inode = d_inode(dentry);
struct ll_inode_info *lli = ll_i2info(inode);
struct md_op_data *op_data = NULL;
struct md_open_data *mod = NULL;
bool file_is_released = false;
int rc = 0, rc1 = 0;
CDEBUG(D_VFSTRACE,
"%s: setattr inode %p/fid:"DFID
" from %llu to %llu, valid %x, hsm_import %d\n",
ll_get_fsname(inode->i_sb, NULL, 0), inode,
PFID(&lli->lli_fid), i_size_read(inode), attr->ia_size,
attr->ia_valid, hsm_import);
if (attr->ia_valid & ATTR_SIZE) {
/* Check new size against VFS/VM file size limit and rlimit */
rc = inode_newsize_ok(inode, attr->ia_size);
if (rc)
return rc;
/* The maximum Lustre file size is variable, based on the
* OST maximum object size and number of stripes. This
* needs another check in addition to the VFS check above. */
if (attr->ia_size > ll_file_maxbytes(inode)) {
CDEBUG(D_INODE, "file "DFID" too large %llu > %llu\n",
PFID(&lli->lli_fid), attr->ia_size,
ll_file_maxbytes(inode));
return -EFBIG;
}
attr->ia_valid |= ATTR_MTIME | ATTR_CTIME;
}
/* POSIX: check before ATTR_*TIME_SET set (from inode_change_ok) */
if (attr->ia_valid & TIMES_SET_FLAGS) {
if ((!uid_eq(current_fsuid(), inode->i_uid)) &&
!capable(CFS_CAP_FOWNER))
return -EPERM;
}
/* We mark all of the fields "set" so MDS/OST does not re-set them */
if (attr->ia_valid & ATTR_CTIME) {
attr->ia_ctime = CURRENT_TIME;
attr->ia_valid |= ATTR_CTIME_SET;
}
if (!(attr->ia_valid & ATTR_ATIME_SET) &&
(attr->ia_valid & ATTR_ATIME)) {
attr->ia_atime = CURRENT_TIME;
attr->ia_valid |= ATTR_ATIME_SET;
}
if (!(attr->ia_valid & ATTR_MTIME_SET) &&
(attr->ia_valid & ATTR_MTIME)) {
attr->ia_mtime = CURRENT_TIME;
attr->ia_valid |= ATTR_MTIME_SET;
}
if (attr->ia_valid & (ATTR_MTIME | ATTR_CTIME))
CDEBUG(D_INODE, "setting mtime %lu, ctime %lu, now = %lu\n",
LTIME_S(attr->ia_mtime), LTIME_S(attr->ia_ctime),
get_seconds());
/* If we are changing file size, file content is modified, flag it. */
if (attr->ia_valid & ATTR_SIZE) {
attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
spin_lock(&lli->lli_lock);
lli->lli_flags |= LLIF_DATA_MODIFIED;
spin_unlock(&lli->lli_lock);
}
/* We always do an MDS RPC, even if we're only changing the size;
* only the MDS knows whether truncate() should fail with -ETXTBUSY */
op_data = kzalloc(sizeof(*op_data), GFP_NOFS);
if (!op_data)
return -ENOMEM;
if (!S_ISDIR(inode->i_mode)) {
if (attr->ia_valid & ATTR_SIZE)
inode_dio_write_done(inode);
mutex_unlock(&inode->i_mutex);
}
memcpy(&op_data->op_attr, attr, sizeof(*attr));
/* Open epoch for truncate. */
if (exp_connect_som(ll_i2mdexp(inode)) &&
(attr->ia_valid & (ATTR_SIZE | ATTR_MTIME | ATTR_MTIME_SET)))
op_data->op_flags = MF_EPOCH_OPEN;
/* truncate on a released file must failed with -ENODATA,
* so size must not be set on MDS for released file
* but other attributes must be set
*/
if (S_ISREG(inode->i_mode)) {
struct lov_stripe_md *lsm;
__u32 gen;
ll_layout_refresh(inode, &gen);
lsm = ccc_inode_lsm_get(inode);
if (lsm && lsm->lsm_pattern & LOV_PATTERN_F_RELEASED)
file_is_released = true;
ccc_inode_lsm_put(inode, lsm);
}
/* if not in HSM import mode, clear size attr for released file
* we clear the attribute send to MDT in op_data, not the original
* received from caller in attr which is used later to
* decide return code */
if (file_is_released && (attr->ia_valid & ATTR_SIZE) && !hsm_import)
op_data->op_attr.ia_valid &= ~ATTR_SIZE;
rc = ll_md_setattr(dentry, op_data, &mod);
if (rc)
goto out;
/* truncate failed (only when non HSM import), others succeed */
if (file_is_released) {
if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
rc = -ENODATA;
else
rc = 0;
goto out;
}
/* RPC to MDT is sent, cancel data modification flag */
if (rc == 0 && (op_data->op_bias & MDS_DATA_MODIFIED)) {
spin_lock(&lli->lli_lock);
lli->lli_flags &= ~LLIF_DATA_MODIFIED;
spin_unlock(&lli->lli_lock);
}
ll_ioepoch_open(lli, op_data->op_ioepoch);
if (!S_ISREG(inode->i_mode)) {
rc = 0;
goto out;
}
if (attr->ia_valid & (ATTR_SIZE |
ATTR_ATIME | ATTR_ATIME_SET |
ATTR_MTIME | ATTR_MTIME_SET)) {
/* For truncate and utimes sending attributes to OSTs, setting
* mtime/atime to the past will be performed under PW [0:EOF]
* extent lock (new_size:EOF for truncate). It may seem
* excessive to send mtime/atime updates to OSTs when not
* setting times to past, but it is necessary due to possible
* time de-synchronization between MDT inode and OST objects */
if (attr->ia_valid & ATTR_SIZE)
down_write(&lli->lli_trunc_sem);
rc = ll_setattr_ost(inode, attr);
if (attr->ia_valid & ATTR_SIZE)
up_write(&lli->lli_trunc_sem);
}
out:
if (op_data) {
if (op_data->op_ioepoch) {
rc1 = ll_setattr_done_writing(inode, op_data, mod);
if (!rc)
rc = rc1;
}
ll_finish_md_op_data(op_data);
}
if (!S_ISDIR(inode->i_mode)) {
mutex_lock(&inode->i_mutex);
if ((attr->ia_valid & ATTR_SIZE) && !hsm_import)
inode_dio_wait(inode);
}
ll_stats_ops_tally(ll_i2sbi(inode), (attr->ia_valid & ATTR_SIZE) ?
LPROC_LL_TRUNC : LPROC_LL_SETATTR, 1);
return rc;
}
int ll_setattr(struct dentry *de, struct iattr *attr)
{
int mode = d_inode(de)->i_mode;
if ((attr->ia_valid & (ATTR_CTIME|ATTR_SIZE|ATTR_MODE)) ==
(ATTR_CTIME|ATTR_SIZE|ATTR_MODE))
attr->ia_valid |= MDS_OPEN_OWNEROVERRIDE;
if (((attr->ia_valid & (ATTR_MODE|ATTR_FORCE|ATTR_SIZE)) ==
(ATTR_SIZE|ATTR_MODE)) &&
(((mode & S_ISUID) && !(attr->ia_mode & S_ISUID)) ||
(((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
!(attr->ia_mode & S_ISGID))))
attr->ia_valid |= ATTR_FORCE;
if ((attr->ia_valid & ATTR_MODE) &&
(mode & S_ISUID) &&
!(attr->ia_mode & S_ISUID) &&
!(attr->ia_valid & ATTR_KILL_SUID))
attr->ia_valid |= ATTR_KILL_SUID;
if ((attr->ia_valid & ATTR_MODE) &&
((mode & (S_ISGID|S_IXGRP)) == (S_ISGID|S_IXGRP)) &&
!(attr->ia_mode & S_ISGID) &&
!(attr->ia_valid & ATTR_KILL_SGID))
attr->ia_valid |= ATTR_KILL_SGID;
return ll_setattr_raw(de, attr, false);
}
int ll_statfs_internal(struct super_block *sb, struct obd_statfs *osfs,
__u64 max_age, __u32 flags)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
struct obd_statfs obd_osfs;
int rc;
rc = obd_statfs(NULL, sbi->ll_md_exp, osfs, max_age, flags);
if (rc) {
CERROR("md_statfs fails: rc = %d\n", rc);
return rc;
}
osfs->os_type = sb->s_magic;
CDEBUG(D_SUPER, "MDC blocks %llu/%llu objects %llu/%llu\n",
osfs->os_bavail, osfs->os_blocks, osfs->os_ffree,
osfs->os_files);
if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
flags |= OBD_STATFS_NODELAY;
rc = obd_statfs_rqset(sbi->ll_dt_exp, &obd_osfs, max_age, flags);
if (rc) {
CERROR("obd_statfs fails: rc = %d\n", rc);
return rc;
}
CDEBUG(D_SUPER, "OSC blocks %llu/%llu objects %llu/%llu\n",
obd_osfs.os_bavail, obd_osfs.os_blocks, obd_osfs.os_ffree,
obd_osfs.os_files);
osfs->os_bsize = obd_osfs.os_bsize;
osfs->os_blocks = obd_osfs.os_blocks;
osfs->os_bfree = obd_osfs.os_bfree;
osfs->os_bavail = obd_osfs.os_bavail;
/* If we don't have as many objects free on the OST as inodes
* on the MDS, we reduce the total number of inodes to
* compensate, so that the "inodes in use" number is correct.
*/
if (obd_osfs.os_ffree < osfs->os_ffree) {
osfs->os_files = (osfs->os_files - osfs->os_ffree) +
obd_osfs.os_ffree;
osfs->os_ffree = obd_osfs.os_ffree;
}
return rc;
}
int ll_statfs(struct dentry *de, struct kstatfs *sfs)
{
struct super_block *sb = de->d_sb;
struct obd_statfs osfs;
int rc;
CDEBUG(D_VFSTRACE, "VFS Op: at %llu jiffies\n", get_jiffies_64());
ll_stats_ops_tally(ll_s2sbi(sb), LPROC_LL_STAFS, 1);
/* Some amount of caching on the client is allowed */
rc = ll_statfs_internal(sb, &osfs,
cfs_time_shift_64(-OBD_STATFS_CACHE_SECONDS),
0);
if (rc)
return rc;
statfs_unpack(sfs, &osfs);
/* We need to downshift for all 32-bit kernels, because we can't
* tell if the kernel is being called via sys_statfs64() or not.
* Stop before overflowing f_bsize - in which case it is better
* to just risk EOVERFLOW if caller is using old sys_statfs(). */
if (sizeof(long) < 8) {
while (osfs.os_blocks > ~0UL && sfs->f_bsize < 0x40000000) {
sfs->f_bsize <<= 1;
osfs.os_blocks >>= 1;
osfs.os_bfree >>= 1;
osfs.os_bavail >>= 1;
}
}
sfs->f_blocks = osfs.os_blocks;
sfs->f_bfree = osfs.os_bfree;
sfs->f_bavail = osfs.os_bavail;
sfs->f_fsid = ll_s2sbi(sb)->ll_fsid;
return 0;
}
void ll_inode_size_lock(struct inode *inode)
{
struct ll_inode_info *lli;
LASSERT(!S_ISDIR(inode->i_mode));
lli = ll_i2info(inode);
mutex_lock(&lli->lli_size_mutex);
}
void ll_inode_size_unlock(struct inode *inode)
{
struct ll_inode_info *lli;
lli = ll_i2info(inode);
mutex_unlock(&lli->lli_size_mutex);
}
void ll_update_inode(struct inode *inode, struct lustre_md *md)
{
struct ll_inode_info *lli = ll_i2info(inode);
struct mdt_body *body = md->body;
struct lov_stripe_md *lsm = md->lsm;
struct ll_sb_info *sbi = ll_i2sbi(inode);
LASSERT((lsm != NULL) == ((body->valid & OBD_MD_FLEASIZE) != 0));
if (lsm != NULL) {
if (!lli->lli_has_smd &&
!(sbi->ll_flags & LL_SBI_LAYOUT_LOCK))
cl_file_inode_init(inode, md);
lli->lli_maxbytes = lsm->lsm_maxbytes;
if (lli->lli_maxbytes > MAX_LFS_FILESIZE)
lli->lli_maxbytes = MAX_LFS_FILESIZE;
}
if (sbi->ll_flags & LL_SBI_RMT_CLIENT) {
if (body->valid & OBD_MD_FLRMTPERM)
ll_update_remote_perm(inode, md->remote_perm);
}
#ifdef CONFIG_FS_POSIX_ACL
else if (body->valid & OBD_MD_FLACL) {
spin_lock(&lli->lli_lock);
if (lli->lli_posix_acl)
posix_acl_release(lli->lli_posix_acl);
lli->lli_posix_acl = md->posix_acl;
spin_unlock(&lli->lli_lock);
}
#endif
inode->i_ino = cl_fid_build_ino(&body->fid1,
sbi->ll_flags & LL_SBI_32BIT_API);
inode->i_generation = cl_fid_build_gen(&body->fid1);
if (body->valid & OBD_MD_FLATIME) {
if (body->atime > LTIME_S(inode->i_atime))
LTIME_S(inode->i_atime) = body->atime;
lli->lli_lvb.lvb_atime = body->atime;
}
if (body->valid & OBD_MD_FLMTIME) {
if (body->mtime > LTIME_S(inode->i_mtime)) {
CDEBUG(D_INODE, "setting ino %lu mtime from %lu to %llu\n",
inode->i_ino, LTIME_S(inode->i_mtime),
body->mtime);
LTIME_S(inode->i_mtime) = body->mtime;
}
lli->lli_lvb.lvb_mtime = body->mtime;
}
if (body->valid & OBD_MD_FLCTIME) {
if (body->ctime > LTIME_S(inode->i_ctime))
LTIME_S(inode->i_ctime) = body->ctime;
lli->lli_lvb.lvb_ctime = body->ctime;
}
if (body->valid & OBD_MD_FLMODE)
inode->i_mode = (inode->i_mode & S_IFMT)|(body->mode & ~S_IFMT);
if (body->valid & OBD_MD_FLTYPE)
inode->i_mode = (inode->i_mode & ~S_IFMT)|(body->mode & S_IFMT);
LASSERT(inode->i_mode != 0);
if (S_ISREG(inode->i_mode))
inode->i_blkbits = min(PTLRPC_MAX_BRW_BITS + 1,
LL_MAX_BLKSIZE_BITS);
else
inode->i_blkbits = inode->i_sb->s_blocksize_bits;
if (body->valid & OBD_MD_FLUID)
inode->i_uid = make_kuid(&init_user_ns, body->uid);
if (body->valid & OBD_MD_FLGID)
inode->i_gid = make_kgid(&init_user_ns, body->gid);
if (body->valid & OBD_MD_FLFLAGS)
inode->i_flags = ll_ext_to_inode_flags(body->flags);
if (body->valid & OBD_MD_FLNLINK)
set_nlink(inode, body->nlink);
if (body->valid & OBD_MD_FLRDEV)
inode->i_rdev = old_decode_dev(body->rdev);
if (body->valid & OBD_MD_FLID) {
/* FID shouldn't be changed! */
if (fid_is_sane(&lli->lli_fid)) {
LASSERTF(lu_fid_eq(&lli->lli_fid, &body->fid1),
"Trying to change FID "DFID
" to the "DFID", inode %lu/%u(%p)\n",
PFID(&lli->lli_fid), PFID(&body->fid1),
inode->i_ino, inode->i_generation, inode);
} else
lli->lli_fid = body->fid1;
}
LASSERT(fid_seq(&lli->lli_fid) != 0);
if (body->valid & OBD_MD_FLSIZE) {
if (exp_connect_som(ll_i2mdexp(inode)) &&
S_ISREG(inode->i_mode)) {
struct lustre_handle lockh;
ldlm_mode_t mode;
/* As it is possible a blocking ast has been processed
* by this time, we need to check there is an UPDATE
* lock on the client and set LLIF_MDS_SIZE_LOCK holding
* it. */
mode = ll_take_md_lock(inode, MDS_INODELOCK_UPDATE,
&lockh, LDLM_FL_CBPENDING,
LCK_CR | LCK_CW |
LCK_PR | LCK_PW);
if (mode) {
if (lli->lli_flags & (LLIF_DONE_WRITING |
LLIF_EPOCH_PENDING |
LLIF_SOM_DIRTY)) {
CERROR("ino %lu flags %u still has size authority! do not trust the size got from MDS\n",
inode->i_ino, lli->lli_flags);
} else {
/* Use old size assignment to avoid
* deadlock bz14138 & bz14326 */
i_size_write(inode, body->size);
spin_lock(&lli->lli_lock);
lli->lli_flags |= LLIF_MDS_SIZE_LOCK;
spin_unlock(&lli->lli_lock);
}
ldlm_lock_decref(&lockh, mode);
}
} else {
/* Use old size assignment to avoid
* deadlock bz14138 & bz14326 */
i_size_write(inode, body->size);
CDEBUG(D_VFSTRACE, "inode=%lu, updating i_size %llu\n",
inode->i_ino, (unsigned long long)body->size);
}
if (body->valid & OBD_MD_FLBLOCKS)
inode->i_blocks = body->blocks;
}
if (body->valid & OBD_MD_FLMDSCAPA) {
LASSERT(md->mds_capa);
ll_add_capa(inode, md->mds_capa);
}
if (body->valid & OBD_MD_FLOSSCAPA) {
LASSERT(md->oss_capa);
ll_add_capa(inode, md->oss_capa);
}
if (body->valid & OBD_MD_TSTATE) {
if (body->t_state & MS_RESTORE)
lli->lli_flags |= LLIF_FILE_RESTORING;
}
}
void ll_read_inode2(struct inode *inode, void *opaque)
{
struct lustre_md *md = opaque;
struct ll_inode_info *lli = ll_i2info(inode);
CDEBUG(D_VFSTRACE, "VFS Op:inode="DFID"(%p)\n",
PFID(&lli->lli_fid), inode);
LASSERT(!lli->lli_has_smd);
/* Core attributes from the MDS first. This is a new inode, and
* the VFS doesn't zero times in the core inode so we have to do
* it ourselves. They will be overwritten by either MDS or OST
* attributes - we just need to make sure they aren't newer. */
LTIME_S(inode->i_mtime) = 0;
LTIME_S(inode->i_atime) = 0;
LTIME_S(inode->i_ctime) = 0;
inode->i_rdev = 0;
ll_update_inode(inode, md);
/* OIDEBUG(inode); */
if (S_ISREG(inode->i_mode)) {
struct ll_sb_info *sbi = ll_i2sbi(inode);
inode->i_op = &ll_file_inode_operations;
inode->i_fop = sbi->ll_fop;
inode->i_mapping->a_ops = (struct address_space_operations *)&ll_aops;
} else if (S_ISDIR(inode->i_mode)) {
inode->i_op = &ll_dir_inode_operations;
inode->i_fop = &ll_dir_operations;
} else if (S_ISLNK(inode->i_mode)) {
inode->i_op = &ll_fast_symlink_inode_operations;
} else {
inode->i_op = &ll_special_inode_operations;
init_special_inode(inode, inode->i_mode,
inode->i_rdev);
}
}
void ll_delete_inode(struct inode *inode)
{
struct cl_inode_info *lli = cl_i2info(inode);
if (S_ISREG(inode->i_mode) && lli->lli_clob != NULL)
/* discard all dirty pages before truncating them, required by
* osc_extent implementation at LU-1030. */
cl_sync_file_range(inode, 0, OBD_OBJECT_EOF,
CL_FSYNC_DISCARD, 1);
truncate_inode_pages_final(&inode->i_data);
/* Workaround for LU-118 */
if (inode->i_data.nrpages) {
spin_lock_irq(&inode->i_data.tree_lock);
spin_unlock_irq(&inode->i_data.tree_lock);
LASSERTF(inode->i_data.nrpages == 0,
"inode=%lu/%u(%p) nrpages=%lu, see http://jira.whamcloud.com/browse/LU-118\n",
inode->i_ino, inode->i_generation, inode,
inode->i_data.nrpages);
}
/* Workaround end */
ll_clear_inode(inode);
clear_inode(inode);
}
int ll_iocontrol(struct inode *inode, struct file *file,
unsigned int cmd, unsigned long arg)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct ptlrpc_request *req = NULL;
int rc, flags = 0;
switch (cmd) {
case FSFILT_IOC_GETFLAGS: {
struct mdt_body *body;
struct md_op_data *op_data;
op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL,
0, 0, LUSTRE_OPC_ANY,
NULL);
if (IS_ERR(op_data))
return PTR_ERR(op_data);
op_data->op_valid = OBD_MD_FLFLAGS;
rc = md_getattr(sbi->ll_md_exp, op_data, &req);
ll_finish_md_op_data(op_data);
if (rc) {
CERROR("failure %d inode %lu\n", rc, inode->i_ino);
return -abs(rc);
}
body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
flags = body->flags;
ptlrpc_req_finished(req);
return put_user(flags, (int *)arg);
}
case FSFILT_IOC_SETFLAGS: {
struct lov_stripe_md *lsm;
struct obd_info oinfo = { { { 0 } } };
struct md_op_data *op_data;
if (get_user(flags, (int *)arg))
return -EFAULT;
op_data = ll_prep_md_op_data(NULL, inode, NULL, NULL, 0, 0,
LUSTRE_OPC_ANY, NULL);
if (IS_ERR(op_data))
return PTR_ERR(op_data);
((struct ll_iattr *)&op_data->op_attr)->ia_attr_flags = flags;
op_data->op_attr.ia_valid |= ATTR_ATTR_FLAG;
rc = md_setattr(sbi->ll_md_exp, op_data,
NULL, 0, NULL, 0, &req, NULL);
ll_finish_md_op_data(op_data);
ptlrpc_req_finished(req);
if (rc)
return rc;
inode->i_flags = ll_ext_to_inode_flags(flags);
lsm = ccc_inode_lsm_get(inode);
if (!lsm_has_objects(lsm)) {
ccc_inode_lsm_put(inode, lsm);
return 0;
}
OBDO_ALLOC(oinfo.oi_oa);
if (!oinfo.oi_oa) {
ccc_inode_lsm_put(inode, lsm);
return -ENOMEM;
}
oinfo.oi_md = lsm;
oinfo.oi_oa->o_oi = lsm->lsm_oi;
oinfo.oi_oa->o_flags = flags;
oinfo.oi_oa->o_valid = OBD_MD_FLID | OBD_MD_FLFLAGS |
OBD_MD_FLGROUP;
oinfo.oi_capa = ll_mdscapa_get(inode);
obdo_set_parent_fid(oinfo.oi_oa, &ll_i2info(inode)->lli_fid);
rc = obd_setattr_rqset(sbi->ll_dt_exp, &oinfo, NULL);
capa_put(oinfo.oi_capa);
OBDO_FREE(oinfo.oi_oa);
ccc_inode_lsm_put(inode, lsm);
if (rc && rc != -EPERM && rc != -EACCES)
CERROR("osc_setattr_async fails: rc = %d\n", rc);
return rc;
}
default:
return -ENOSYS;
}
return 0;
}
int ll_flush_ctx(struct inode *inode)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
CDEBUG(D_SEC, "flush context for user %d\n",
from_kuid(&init_user_ns, current_uid()));
obd_set_info_async(NULL, sbi->ll_md_exp,
sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
0, NULL, NULL);
obd_set_info_async(NULL, sbi->ll_dt_exp,
sizeof(KEY_FLUSH_CTX), KEY_FLUSH_CTX,
0, NULL, NULL);
return 0;
}
/* umount -f client means force down, don't save state */
void ll_umount_begin(struct super_block *sb)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
struct obd_device *obd;
struct obd_ioctl_data *ioc_data;
CDEBUG(D_VFSTRACE, "VFS Op: superblock %p count %d active %d\n", sb,
sb->s_count, atomic_read(&sb->s_active));
obd = class_exp2obd(sbi->ll_md_exp);
if (obd == NULL) {
CERROR("Invalid MDC connection handle %#llx\n",
sbi->ll_md_exp->exp_handle.h_cookie);
return;
}
obd->obd_force = 1;
obd = class_exp2obd(sbi->ll_dt_exp);
if (obd == NULL) {
CERROR("Invalid LOV connection handle %#llx\n",
sbi->ll_dt_exp->exp_handle.h_cookie);
return;
}
obd->obd_force = 1;
ioc_data = kzalloc(sizeof(*ioc_data), GFP_NOFS);
if (ioc_data) {
obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_md_exp,
sizeof(*ioc_data), ioc_data, NULL);
obd_iocontrol(IOC_OSC_SET_ACTIVE, sbi->ll_dt_exp,
sizeof(*ioc_data), ioc_data, NULL);
OBD_FREE_PTR(ioc_data);
}
/* Really, we'd like to wait until there are no requests outstanding,
* and then continue. For now, we just invalidate the requests,
* schedule() and sleep one second if needed, and hope.
*/
schedule();
}
int ll_remount_fs(struct super_block *sb, int *flags, char *data)
{
struct ll_sb_info *sbi = ll_s2sbi(sb);
char *profilenm = get_profile_name(sb);
int err;
__u32 read_only;
if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
read_only = *flags & MS_RDONLY;
err = obd_set_info_async(NULL, sbi->ll_md_exp,
sizeof(KEY_READ_ONLY),
KEY_READ_ONLY, sizeof(read_only),
&read_only, NULL);
if (err) {
LCONSOLE_WARN("Failed to remount %s %s (%d)\n",
profilenm, read_only ?
"read-only" : "read-write", err);
return err;
}
if (read_only)
sb->s_flags |= MS_RDONLY;
else
sb->s_flags &= ~MS_RDONLY;
if (sbi->ll_flags & LL_SBI_VERBOSE)
LCONSOLE_WARN("Remounted %s %s\n", profilenm,
read_only ? "read-only" : "read-write");
}
return 0;
}
int ll_prep_inode(struct inode **inode, struct ptlrpc_request *req,
struct super_block *sb, struct lookup_intent *it)
{
struct ll_sb_info *sbi = NULL;
struct lustre_md md;
int rc;
LASSERT(*inode || sb);
sbi = sb ? ll_s2sbi(sb) : ll_i2sbi(*inode);
rc = md_get_lustre_md(sbi->ll_md_exp, req, sbi->ll_dt_exp,
sbi->ll_md_exp, &md);
if (rc)
return rc;
if (*inode) {
ll_update_inode(*inode, &md);
} else {
LASSERT(sb != NULL);
/*
* At this point server returns to client's same fid as client
* generated for creating. So using ->fid1 is okay here.
*/
LASSERT(fid_is_sane(&md.body->fid1));
*inode = ll_iget(sb, cl_fid_build_ino(&md.body->fid1,
sbi->ll_flags & LL_SBI_32BIT_API),
&md);
if (*inode == NULL || IS_ERR(*inode)) {
#ifdef CONFIG_FS_POSIX_ACL
if (md.posix_acl) {
posix_acl_release(md.posix_acl);
md.posix_acl = NULL;
}
#endif
rc = IS_ERR(*inode) ? PTR_ERR(*inode) : -ENOMEM;
*inode = NULL;
CERROR("new_inode -fatal: rc %d\n", rc);
goto out;
}
}
/* Handling piggyback layout lock.
* Layout lock can be piggybacked by getattr and open request.
* The lsm can be applied to inode only if it comes with a layout lock
* otherwise correct layout may be overwritten, for example:
* 1. proc1: mdt returns a lsm but not granting layout
* 2. layout was changed by another client
* 3. proc2: refresh layout and layout lock granted
* 4. proc1: to apply a stale layout */
if (it != NULL && it->d.lustre.it_lock_mode != 0) {
struct lustre_handle lockh;
struct ldlm_lock *lock;
lockh.cookie = it->d.lustre.it_lock_handle;
lock = ldlm_handle2lock(&lockh);
LASSERT(lock != NULL);
if (ldlm_has_layout(lock)) {
struct cl_object_conf conf;
memset(&conf, 0, sizeof(conf));
conf.coc_opc = OBJECT_CONF_SET;
conf.coc_inode = *inode;
conf.coc_lock = lock;
conf.u.coc_md = &md;
(void)ll_layout_conf(*inode, &conf);
}
LDLM_LOCK_PUT(lock);
}
out:
if (md.lsm != NULL)
obd_free_memmd(sbi->ll_dt_exp, &md.lsm);
md_free_lustre_md(sbi->ll_md_exp, &md);
return rc;
}
int ll_obd_statfs(struct inode *inode, void *arg)
{
struct ll_sb_info *sbi = NULL;
struct obd_export *exp;
char *buf = NULL;
struct obd_ioctl_data *data = NULL;
__u32 type;
__u32 flags;
int len = 0, rc;
if (!inode) {
rc = -EINVAL;
goto out_statfs;
}
sbi = ll_i2sbi(inode);
if (!sbi) {
rc = -EINVAL;
goto out_statfs;
}
rc = obd_ioctl_getdata(&buf, &len, arg);
if (rc)
goto out_statfs;
data = (void *)buf;
if (!data->ioc_inlbuf1 || !data->ioc_inlbuf2 ||
!data->ioc_pbuf1 || !data->ioc_pbuf2) {
rc = -EINVAL;
goto out_statfs;
}
if (data->ioc_inllen1 != sizeof(__u32) ||
data->ioc_inllen2 != sizeof(__u32) ||
data->ioc_plen1 != sizeof(struct obd_statfs) ||
data->ioc_plen2 != sizeof(struct obd_uuid)) {
rc = -EINVAL;
goto out_statfs;
}
memcpy(&type, data->ioc_inlbuf1, sizeof(__u32));
if (type & LL_STATFS_LMV)
exp = sbi->ll_md_exp;
else if (type & LL_STATFS_LOV)
exp = sbi->ll_dt_exp;
else {
rc = -ENODEV;
goto out_statfs;
}
flags = (type & LL_STATFS_NODELAY) ? OBD_STATFS_NODELAY : 0;
rc = obd_iocontrol(IOC_OBD_STATFS, exp, len, buf, &flags);
if (rc)
goto out_statfs;
out_statfs:
if (buf)
obd_ioctl_freedata(buf, len);
return rc;
}
int ll_process_config(struct lustre_cfg *lcfg)
{
char *ptr;
void *sb;
struct lprocfs_static_vars lvars;
unsigned long x;
int rc = 0;
lprocfs_llite_init_vars(&lvars);
/* The instance name contains the sb: lustre-client-aacfe000 */
ptr = strrchr(lustre_cfg_string(lcfg, 0), '-');
if (!ptr || !*(++ptr))
return -EINVAL;
rc = kstrtoul(ptr, 16, &x);
if (rc != 0)
return -EINVAL;
sb = (void *)x;
/* This better be a real Lustre superblock! */
LASSERT(s2lsi((struct super_block *)sb)->lsi_lmd->lmd_magic == LMD_MAGIC);
/* Note we have not called client_common_fill_super yet, so
proc fns must be able to handle that! */
rc = class_process_proc_param(PARAM_LLITE, lvars.obd_vars,
lcfg, sb);
if (rc > 0)
rc = 0;
return rc;
}
/* this function prepares md_op_data hint for passing ot down to MD stack. */
struct md_op_data *ll_prep_md_op_data(struct md_op_data *op_data,
struct inode *i1, struct inode *i2,
const char *name, int namelen,
int mode, __u32 opc, void *data)
{
LASSERT(i1 != NULL);
if (namelen > ll_i2sbi(i1)->ll_namelen)
return ERR_PTR(-ENAMETOOLONG);
if (op_data == NULL)
op_data = kzalloc(sizeof(*op_data), GFP_NOFS);
if (op_data == NULL)
return ERR_PTR(-ENOMEM);
ll_i2gids(op_data->op_suppgids, i1, i2);
op_data->op_fid1 = *ll_inode2fid(i1);
op_data->op_capa1 = ll_mdscapa_get(i1);
if (i2) {
op_data->op_fid2 = *ll_inode2fid(i2);
op_data->op_capa2 = ll_mdscapa_get(i2);
} else {
fid_zero(&op_data->op_fid2);
op_data->op_capa2 = NULL;
}
op_data->op_name = name;
op_data->op_namelen = namelen;
op_data->op_mode = mode;
op_data->op_mod_time = get_seconds();
op_data->op_fsuid = from_kuid(&init_user_ns, current_fsuid());
op_data->op_fsgid = from_kgid(&init_user_ns, current_fsgid());
op_data->op_cap = cfs_curproc_cap_pack();
op_data->op_bias = 0;
op_data->op_cli_flags = 0;
if ((opc == LUSTRE_OPC_CREATE) && (name != NULL) &&
filename_is_volatile(name, namelen, NULL))
op_data->op_bias |= MDS_CREATE_VOLATILE;
op_data->op_opc = opc;
op_data->op_mds = 0;
op_data->op_data = data;
/* If the file is being opened after mknod() (normally due to NFS)
* try to use the default stripe data from parent directory for
* allocating OST objects. Try to pass the parent FID to MDS. */
if (opc == LUSTRE_OPC_CREATE && i1 == i2 && S_ISREG(i2->i_mode) &&
!ll_i2info(i2)->lli_has_smd) {
struct ll_inode_info *lli = ll_i2info(i2);
spin_lock(&lli->lli_lock);
if (likely(!lli->lli_has_smd && !fid_is_zero(&lli->lli_pfid)))
op_data->op_fid1 = lli->lli_pfid;
spin_unlock(&lli->lli_lock);
/** We ignore parent's capability temporary. */
}
/* When called by ll_setattr_raw, file is i1. */
if (LLIF_DATA_MODIFIED & ll_i2info(i1)->lli_flags)
op_data->op_bias |= MDS_DATA_MODIFIED;
return op_data;
}
void ll_finish_md_op_data(struct md_op_data *op_data)
{
capa_put(op_data->op_capa1);
capa_put(op_data->op_capa2);
OBD_FREE_PTR(op_data);
}
int ll_show_options(struct seq_file *seq, struct dentry *dentry)
{
struct ll_sb_info *sbi;
LASSERT((seq != NULL) && (dentry != NULL));
sbi = ll_s2sbi(dentry->d_sb);
if (sbi->ll_flags & LL_SBI_NOLCK)
seq_puts(seq, ",nolock");
if (sbi->ll_flags & LL_SBI_FLOCK)
seq_puts(seq, ",flock");
if (sbi->ll_flags & LL_SBI_LOCALFLOCK)
seq_puts(seq, ",localflock");
if (sbi->ll_flags & LL_SBI_USER_XATTR)
seq_puts(seq, ",user_xattr");
if (sbi->ll_flags & LL_SBI_LAZYSTATFS)
seq_puts(seq, ",lazystatfs");
if (sbi->ll_flags & LL_SBI_USER_FID2PATH)
seq_puts(seq, ",user_fid2path");
return 0;
}
/**
* Get obd name by cmd, and copy out to user space
*/
int ll_get_obd_name(struct inode *inode, unsigned int cmd, unsigned long arg)
{
struct ll_sb_info *sbi = ll_i2sbi(inode);
struct obd_device *obd;
if (cmd == OBD_IOC_GETDTNAME)
obd = class_exp2obd(sbi->ll_dt_exp);
else if (cmd == OBD_IOC_GETMDNAME)
obd = class_exp2obd(sbi->ll_md_exp);
else
return -EINVAL;
if (!obd)
return -ENOENT;
if (copy_to_user((void *)arg, obd->obd_name,
strlen(obd->obd_name) + 1))
return -EFAULT;
return 0;
}
/**
* Get lustre file system name by \a sbi. If \a buf is provided(non-NULL), the
* fsname will be returned in this buffer; otherwise, a static buffer will be
* used to store the fsname and returned to caller.
*/
char *ll_get_fsname(struct super_block *sb, char *buf, int buflen)
{
static char fsname_static[MTI_NAME_MAXLEN];
struct lustre_sb_info *lsi = s2lsi(sb);
char *ptr;
int len;
if (buf == NULL) {
/* this means the caller wants to use static buffer
* and it doesn't care about race. Usually this is
* in error reporting path */
buf = fsname_static;
buflen = sizeof(fsname_static);
}
len = strlen(lsi->lsi_lmd->lmd_profile);
ptr = strrchr(lsi->lsi_lmd->lmd_profile, '-');
if (ptr && (strcmp(ptr, "-client") == 0))
len -= 7;
if (unlikely(len >= buflen))
len = buflen - 1;
strncpy(buf, lsi->lsi_lmd->lmd_profile, len);
buf[len] = '\0';
return buf;
}
void ll_dirty_page_discard_warn(struct page *page, int ioret)
{
char *buf, *path = NULL;
struct dentry *dentry = NULL;
struct ccc_object *obj = cl_inode2ccc(page->mapping->host);
/* this can be called inside spin lock so use GFP_ATOMIC. */
buf = (char *)__get_free_page(GFP_ATOMIC);
if (buf != NULL) {
dentry = d_find_alias(page->mapping->host);
if (dentry != NULL)
path = dentry_path_raw(dentry, buf, PAGE_SIZE);
}
CDEBUG(D_WARNING,
"%s: dirty page discard: %s/fid: " DFID "/%s may get corrupted (rc %d)\n",
ll_get_fsname(page->mapping->host->i_sb, NULL, 0),
s2lsi(page->mapping->host->i_sb)->lsi_lmd->lmd_dev,
PFID(&obj->cob_header.coh_lu.loh_fid),
(path && !IS_ERR(path)) ? path : "", ioret);
if (dentry != NULL)
dput(dentry);
if (buf != NULL)
free_page((unsigned long)buf);
}