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Subject[PATCH 40/58] staging: lustre: llite: a few fixes for migration.
Date
From: wang di <di.wang@intel.com>

1. Clear the client dentry cache before migrating file/directory
to the remote MDT.

2. Do not return stripe information to client, if it did not get
the layout lock.

Signed-off-by: wang di <di.wang@intel.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-4682
Reviewed-on: http://review.whamcloud.com/9522
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
---
drivers/staging/lustre/lustre/llite/dir.c | 22 +++---------
drivers/staging/lustre/lustre/llite/file.c | 34 +++++++++++---------
.../staging/lustre/lustre/llite/llite_internal.h | 2 +
drivers/staging/lustre/lustre/lov/lov_object.c | 1 +
4 files changed, 28 insertions(+), 31 deletions(-)

diff --git a/drivers/staging/lustre/lustre/llite/dir.c b/drivers/staging/lustre/lustre/llite/dir.c
index ef7322e..84bec03 100644
--- a/drivers/staging/lustre/lustre/llite/dir.c
+++ b/drivers/staging/lustre/lustre/llite/dir.c
@@ -1318,11 +1318,9 @@ static long ll_dir_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
return 0;
}
case IOC_MDC_LOOKUP: {
- struct ptlrpc_request *request = NULL;
int namelen, len = 0;
char *buf = NULL;
char *filename;
- struct md_op_data *op_data;

rc = obd_ioctl_getdata(&buf, &len, (void __user *)arg);
if (rc)
@@ -1338,21 +1336,13 @@ static long ll_dir_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
goto out_free;
}

- op_data = ll_prep_md_op_data(NULL, inode, NULL, filename, namelen,
- 0, LUSTRE_OPC_ANY, NULL);
- if (IS_ERR(op_data)) {
- rc = PTR_ERR(op_data);
- goto out_free;
- }
-
- op_data->op_valid = OBD_MD_FLID;
- rc = md_getattr_name(sbi->ll_md_exp, op_data, &request);
- ll_finish_md_op_data(op_data);
+ rc = ll_get_fid_by_name(inode, filename, namelen, NULL);
if (rc < 0) {
- CDEBUG(D_INFO, "md_getattr_name: %d\n", rc);
+ CERROR("%s: lookup %.*s failed: rc = %d\n",
+ ll_get_fsname(inode->i_sb, NULL, 0), namelen,
+ filename, rc);
goto out_free;
}
- ptlrpc_req_finished(request);
out_free:
obd_ioctl_freedata(buf, len);
return rc;
@@ -1981,7 +1971,7 @@ out_quotactl:

filename = data->ioc_inlbuf1;
namelen = data->ioc_inllen1;
- if (namelen < 1) {
+ if (namelen < 1 || namelen != strlen(filename) + 1) {
rc = -EINVAL;
goto migrate_free;
}
@@ -1992,7 +1982,7 @@ out_quotactl:
}
mdtidx = *(int *)data->ioc_inlbuf2;

- rc = ll_migrate(inode, file, mdtidx, filename, namelen);
+ rc = ll_migrate(inode, file, mdtidx, filename, namelen - 1);
migrate_free:
obd_ioctl_freedata(buf, len);

diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index 391748c..4e483c0 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -2828,8 +2828,8 @@ ll_file_flock(struct file *file, int cmd, struct file_lock *file_lock)
return rc;
}

-static int ll_get_fid_by_name(struct inode *parent, const char *name,
- int namelen, struct lu_fid *fid)
+int ll_get_fid_by_name(struct inode *parent, const char *name,
+ int namelen, struct lu_fid *fid)
{
struct md_op_data *op_data = NULL;
struct ptlrpc_request *req;
@@ -2843,20 +2843,19 @@ static int ll_get_fid_by_name(struct inode *parent, const char *name,

op_data->op_valid = OBD_MD_FLID;
rc = md_getattr_name(ll_i2sbi(parent)->ll_md_exp, op_data, &req);
+ ll_finish_md_op_data(op_data);
if (rc < 0)
- goto out_free;
+ return rc;

body = req_capsule_server_get(&req->rq_pill, &RMF_MDT_BODY);
if (!body) {
rc = -EFAULT;
goto out_req;
}
- *fid = body->fid1;
+ if (fid)
+ *fid = body->fid1;
out_req:
ptlrpc_req_finished(req);
-out_free:
- if (op_data)
- ll_finish_md_op_data(op_data);
return rc;
}

@@ -2864,12 +2863,13 @@ int ll_migrate(struct inode *parent, struct file *file, int mdtidx,
const char *name, int namelen)
{
struct ptlrpc_request *request = NULL;
+ struct inode *child_inode = NULL;
struct dentry *dchild = NULL;
struct md_op_data *op_data;
struct qstr qstr;
int rc;

- CDEBUG(D_VFSTRACE, "migrate %s under"DFID" to MDT%d\n",
+ CDEBUG(D_VFSTRACE, "migrate %s under "DFID" to MDT%d\n",
name, PFID(ll_inode2fid(parent)), mdtidx);

op_data = ll_prep_md_op_data(NULL, parent, NULL, name, namelen,
@@ -2884,8 +2884,13 @@ int ll_migrate(struct inode *parent, struct file *file, int mdtidx,
dchild = d_lookup(file_dentry(file), &qstr);
if (dchild && dchild->d_inode) {
op_data->op_fid3 = *ll_inode2fid(dchild->d_inode);
+ if (dchild->d_inode) {
+ child_inode = igrab(dchild->d_inode);
+ ll_invalidate_aliases(child_inode);
+ }
+ dput(dchild);
} else {
- rc = ll_get_fid_by_name(parent, name, strnlen(name, namelen),
+ rc = ll_get_fid_by_name(parent, name, namelen,
&op_data->op_fid3);
if (rc)
goto out_free;
@@ -2895,6 +2900,7 @@ int ll_migrate(struct inode *parent, struct file *file, int mdtidx,
CERROR("%s: migrate %s, but fid "DFID" is insane\n",
ll_get_fsname(parent->i_sb, NULL, 0), name,
PFID(&op_data->op_fid3));
+ rc = -EINVAL;
goto out_free;
}

@@ -2912,18 +2918,16 @@ int ll_migrate(struct inode *parent, struct file *file, int mdtidx,
op_data->op_mds = mdtidx;
op_data->op_cli_flags = CLI_MIGRATE;
rc = md_rename(ll_i2sbi(parent)->ll_md_exp, op_data, name,
- strnlen(name, namelen), name, strnlen(name, namelen),
- &request);
+ namelen, name, namelen, &request);
if (!rc)
ll_update_times(request, parent);

ptlrpc_req_finished(request);

out_free:
- if (dchild) {
- if (dchild->d_inode)
- ll_delete_inode(dchild->d_inode);
- dput(dchild);
+ if (child_inode) {
+ clear_nlink(child_inode);
+ iput(child_inode);
}

ll_finish_md_op_data(op_data);
diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h
index 69492f0..120aca3 100644
--- a/drivers/staging/lustre/lustre/llite/llite_internal.h
+++ b/drivers/staging/lustre/lustre/llite/llite_internal.h
@@ -721,6 +721,8 @@ int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat);
struct posix_acl *ll_get_acl(struct inode *inode, int type);
int ll_migrate(struct inode *parent, struct file *file, int mdtidx,
const char *name, int namelen);
+int ll_get_fid_by_name(struct inode *parent, const char *name,
+ int namelen, struct lu_fid *fid);
int ll_inode_permission(struct inode *inode, int mask);

int ll_lov_setstripe_ea_info(struct inode *inode, struct dentry *dentry,
diff --git a/drivers/staging/lustre/lustre/lov/lov_object.c b/drivers/staging/lustre/lustre/lov/lov_object.c
index f9621b0..2a52d0c 100644
--- a/drivers/staging/lustre/lustre/lov/lov_object.c
+++ b/drivers/staging/lustre/lustre/lov/lov_object.c
@@ -224,6 +224,7 @@ static int lov_init_raid0(const struct lu_env *env,

LASSERT(!lov->lo_lsm);
lov->lo_lsm = lsm_addref(lsm);
+ lov->lo_layout_invalid = true;
r0->lo_nr = lsm->lsm_stripe_count;
LASSERT(r0->lo_nr <= lov_targets_nr(dev));

--
1.7.1
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