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ceph: rename snapshot support

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Signed-off-by: Yan, Zheng <zyan@redhat.com>
This commit is contained in:
Yan, Zheng 2015-04-07 15:36:32 +08:00 committed by Ilya Dryomov
parent c0bd50e2ee
commit 0ea611a3bc
3 changed files with 11 additions and 4 deletions
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13
fs/ceph/dir.c
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@ -947,16 +947,20 @@ static int ceph_rename(struct inode *old_dir, struct dentry *old_dentry,
struct ceph_fs_client *fsc = ceph_sb_to_client(old_dir->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_mds_request *req;
int op = CEPH_MDS_OP_RENAME;
int err;
if (ceph_snap(old_dir) != ceph_snap(new_dir))
return -EXDEV;
if (ceph_snap(old_dir) != CEPH_NOSNAP ||
ceph_snap(new_dir) != CEPH_NOSNAP)
return -EROFS;
if (ceph_snap(old_dir) != CEPH_NOSNAP) {
if (old_dir == new_dir && ceph_snap(old_dir) == CEPH_SNAPDIR)
op = CEPH_MDS_OP_RENAMESNAP;
else
return -EROFS;
}
dout("rename dir %p dentry %p to dir %p dentry %p\n",
old_dir, old_dentry, new_dir, new_dentry);
req = ceph_mdsc_create_request(mdsc, CEPH_MDS_OP_RENAME, USE_AUTH_MDS);
req = ceph_mdsc_create_request(mdsc, op, USE_AUTH_MDS);
if (IS_ERR(req))
return PTR_ERR(req);
ihold(old_dir);
@ -1387,6 +1391,7 @@ const struct inode_operations ceph_snapdir_iops = {
.getattr = ceph_getattr,
.mkdir = ceph_mkdir,
.rmdir = ceph_unlink,
.rename = ceph_rename,
};
const struct dentry_operations ceph_dentry_ops = {

1
fs/ceph/strings.c
View File

@ -75,6 +75,7 @@ const char *ceph_mds_op_name(int op)
case CEPH_MDS_OP_LSSNAP: return "lssnap";
case CEPH_MDS_OP_MKSNAP: return "mksnap";
case CEPH_MDS_OP_RMSNAP: return "rmsnap";
case CEPH_MDS_OP_RENAMESNAP: return "renamesnap";
case CEPH_MDS_OP_SETFILELOCK: return "setfilelock";
case CEPH_MDS_OP_GETFILELOCK: return "getfilelock";
}

1
include/linux/ceph/ceph_fs.h
View File

@ -323,6 +323,7 @@ enum {
CEPH_MDS_OP_MKSNAP = 0x01400,
CEPH_MDS_OP_RMSNAP = 0x01401,
CEPH_MDS_OP_LSSNAP = 0x00402,
CEPH_MDS_OP_RENAMESNAP = 0x01403,
};
extern const char *ceph_mds_op_name(int op);