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authorXiubo Li <xiubli@redhat.com>2020-11-11 04:29:40 +0300
committerIlya Dryomov <idryomov@gmail.com>2020-12-15 01:21:47 +0300
commit5a9e2f5d5590fc70514083bd8771ec04de538387 (patch)
tree9fd805c82818580b66eb79ccae86f5e98c11cc0e /fs/ceph
parent247b1f19dbeb4855cb891ca01428d7a81c1657a7 (diff)
downloadlinux-5a9e2f5d5590fc70514083bd8771ec04de538387.tar.xz
ceph: add ceph.{cluster_fsid/client_id} vxattrs
These two vxattrs will only exist in local client side, with which we can easily know which mountpoint the file belongs to and also they can help locate the debugfs path quickly. URL: https://tracker.ceph.com/issues/48057 Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Reviewed-by: Ilya Dryomov <idryomov@gmail.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph')
-rw-r--r--fs/ceph/xattr.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index 0fd05d3d4399..e89750a1f039 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -304,6 +304,23 @@ static ssize_t ceph_vxattrcb_snap_btime(struct ceph_inode_info *ci, char *val,
ci->i_snap_btime.tv_nsec);
}
+static ssize_t ceph_vxattrcb_cluster_fsid(struct ceph_inode_info *ci,
+ char *val, size_t size)
+{
+ struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb);
+
+ return ceph_fmt_xattr(val, size, "%pU", &fsc->client->fsid);
+}
+
+static ssize_t ceph_vxattrcb_client_id(struct ceph_inode_info *ci,
+ char *val, size_t size)
+{
+ struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb);
+
+ return ceph_fmt_xattr(val, size, "client%lld",
+ ceph_client_gid(fsc->client));
+}
+
#define CEPH_XATTR_NAME(_type, _name) XATTR_CEPH_PREFIX #_type "." #_name
#define CEPH_XATTR_NAME2(_type, _name, _name2) \
XATTR_CEPH_PREFIX #_type "." #_name "." #_name2
@@ -407,6 +424,24 @@ static struct ceph_vxattr ceph_file_vxattrs[] = {
{ .name = NULL, 0 } /* Required table terminator */
};
+static struct ceph_vxattr ceph_common_vxattrs[] = {
+ {
+ .name = "ceph.cluster_fsid",
+ .name_size = sizeof("ceph.cluster_fsid"),
+ .getxattr_cb = ceph_vxattrcb_cluster_fsid,
+ .exists_cb = NULL,
+ .flags = VXATTR_FLAG_READONLY,
+ },
+ {
+ .name = "ceph.client_id",
+ .name_size = sizeof("ceph.client_id"),
+ .getxattr_cb = ceph_vxattrcb_client_id,
+ .exists_cb = NULL,
+ .flags = VXATTR_FLAG_READONLY,
+ },
+ { .name = NULL, 0 } /* Required table terminator */
+};
+
static struct ceph_vxattr *ceph_inode_vxattrs(struct inode *inode)
{
if (S_ISDIR(inode->i_mode))
@@ -429,6 +464,13 @@ static struct ceph_vxattr *ceph_match_vxattr(struct inode *inode,
}
}
+ vxattr = ceph_common_vxattrs;
+ while (vxattr->name) {
+ if (!strcmp(vxattr->name, name))
+ return vxattr;
+ vxattr++;
+ }
+
return NULL;
}