ping @jeff @Ilya On Fri, Aug 28, 2020 at 9:29 AM Yanhu Cao <gmayyyha@xxxxxxxxx> wrote: > > It's easy to know how many snapshots have been created. > > Link: https://tracker.ceph.com/issues/47168 > Signed-off-by: Yanhu Cao <gmayyyha@xxxxxxxxx> > --- > fs/ceph/inode.c | 1 + > fs/ceph/mds_client.c | 9 ++++++++- > fs/ceph/mds_client.h | 1 + > fs/ceph/super.h | 2 +- > fs/ceph/xattr.c | 7 +++++++ > 5 files changed, 18 insertions(+), 2 deletions(-) > > diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c > index 357c937699d5..650cad4b3ecb 100644 > --- a/fs/ceph/inode.c > +++ b/fs/ceph/inode.c > @@ -891,6 +891,7 @@ int ceph_fill_inode(struct inode *inode, struct page *locked_page, > ci->i_rfiles = le64_to_cpu(info->rfiles); > ci->i_rsubdirs = le64_to_cpu(info->rsubdirs); > ci->i_dir_pin = iinfo->dir_pin; > + ci->i_rsnaps = iinfo->rsnaps; > ceph_decode_timespec64(&ci->i_rctime, &info->rctime); > } > } > diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c > index 4a26862d7667..3466845c0179 100644 > --- a/fs/ceph/mds_client.c > +++ b/fs/ceph/mds_client.c > @@ -176,6 +176,13 @@ static int parse_reply_info_in(void **p, void *end, > memset(&info->snap_btime, 0, sizeof(info->snap_btime)); > } > > + /* snapshot count, remains zero for v<=3 */ > + if (struct_v >= 4) { > + ceph_decode_64_safe(p, end, info->rsnaps, bad); > + } else { > + info->rsnaps = 0; > + } > + > *p = end; > } else { > if (features & CEPH_FEATURE_MDS_INLINE_DATA) { > @@ -214,7 +221,7 @@ static int parse_reply_info_in(void **p, void *end, > } > > info->dir_pin = -ENODATA; > - /* info->snap_btime remains zero */ > + /* info->snap_btime and info->rsnaps remain zero */ > } > return 0; > bad: > diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h > index bc9e95937d7c..76f2ed1a7cbf 100644 > --- a/fs/ceph/mds_client.h > +++ b/fs/ceph/mds_client.h > @@ -88,6 +88,7 @@ struct ceph_mds_reply_info_in { > s32 dir_pin; > struct ceph_timespec btime; > struct ceph_timespec snap_btime; > + u64 rsnaps; > u64 change_attr; > }; > > diff --git a/fs/ceph/super.h b/fs/ceph/super.h > index 4c3c964b1c54..eb108b69da71 100644 > --- a/fs/ceph/super.h > +++ b/fs/ceph/super.h > @@ -332,7 +332,7 @@ struct ceph_inode_info { > > /* for dirs */ > struct timespec64 i_rctime; > - u64 i_rbytes, i_rfiles, i_rsubdirs; > + u64 i_rbytes, i_rfiles, i_rsubdirs, i_rsnaps; > u64 i_files, i_subdirs; > > /* quotas */ > diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c > index 3a733ac33d9b..c7d8ecc3d04b 100644 > --- a/fs/ceph/xattr.c > +++ b/fs/ceph/xattr.c > @@ -231,6 +231,12 @@ static ssize_t ceph_vxattrcb_dir_rsubdirs(struct ceph_inode_info *ci, char *val, > return ceph_fmt_xattr(val, size, "%lld", ci->i_rsubdirs); > } > > +static ssize_t ceph_vxattrcb_dir_rsnaps(struct ceph_inode_info *ci, char *val, > + size_t size) > +{ > + return ceph_fmt_xattr(val, size, "%lld", ci->i_rsnaps); > +} > + > static ssize_t ceph_vxattrcb_dir_rbytes(struct ceph_inode_info *ci, char *val, > size_t size) > { > @@ -352,6 +358,7 @@ static struct ceph_vxattr ceph_dir_vxattrs[] = { > XATTR_RSTAT_FIELD(dir, rentries), > XATTR_RSTAT_FIELD(dir, rfiles), > XATTR_RSTAT_FIELD(dir, rsubdirs), > + XATTR_RSTAT_FIELD(dir, rsnaps), > XATTR_RSTAT_FIELD(dir, rbytes), > XATTR_RSTAT_FIELD(dir, rctime), > { > -- > 2.24.3 (Apple Git-128) >
