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| author | Steven Whitehouse <swhiteho@redhat.com> | 2010-05-06 11:03:29 +0100 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2010-05-06 11:03:29 +0100 |
| commit | 913a71d250803130eac523e7a2b6439e31a0bc83 (patch) | |
| tree | 5a5c51a5651c49d21cb6f88c63dc063df12acff7 | |
| parent | ad6bb90f3401556469489f237cb08626d88703d2 (diff) | |
| download | linux-913a71d250803130eac523e7a2b6439e31a0bc83.tar.bz2 | |
GFS2: Add some useful messages
The following patch adds a message to indicate when barriers have been
disabled due to a block device which doesn't support them. You could
already tell this via the mount options in /proc/mounts, but all the
other filesystems also log a message at the same time.
Also, the same mechanisms are used to indicate when the lock
demote interface has been used (only ever used for debugging)
which is a request from our support team.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
| -rw-r--r-- | fs/gfs2/incore.h | 1 | ||||
| -rw-r--r-- | fs/gfs2/log.c | 1 | ||||
| -rw-r--r-- | fs/gfs2/super.c | 3 | ||||
| -rw-r--r-- | fs/gfs2/sys.c | 2 |
4 files changed, 6 insertions, 1 deletions
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h index 08dd65745473..b5d7363b22da 100644 --- a/fs/gfs2/incore.h +++ b/fs/gfs2/incore.h @@ -459,6 +459,7 @@ enum { SDF_SHUTDOWN = 2, SDF_NOBARRIERS = 3, SDF_NORECOVERY = 4, + SDF_DEMOTE = 5, }; #define GFS2_FSNAME_LEN 256 diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c index d5959df6deb2..b593f0e28f25 100644 --- a/fs/gfs2/log.c +++ b/fs/gfs2/log.c @@ -600,6 +600,7 @@ static void log_write_header(struct gfs2_sbd *sdp, u32 flags, int pull) if (buffer_eopnotsupp(bh)) { clear_buffer_eopnotsupp(bh); set_buffer_uptodate(bh); + fs_info(sdp, "barrier sync failed - disabling barriers\n"); set_bit(SDF_NOBARRIERS, &sdp->sd_flags); lock_buffer(bh); skip_barrier: diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c index 7a93e9ff7d3c..4d1aad38f1b1 100644 --- a/fs/gfs2/super.c +++ b/fs/gfs2/super.c @@ -1334,7 +1334,8 @@ static int gfs2_show_options(struct seq_file *s, struct vfsmount *mnt) } if (test_bit(SDF_NOBARRIERS, &sdp->sd_flags)) seq_printf(s, ",nobarrier"); - + if (test_bit(SDF_DEMOTE, &sdp->sd_flags)) + seq_printf(s, ",demote_interface_used"); return 0; } diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c index 2ac845d9c46c..7afb62ec97cf 100644 --- a/fs/gfs2/sys.c +++ b/fs/gfs2/sys.c @@ -233,6 +233,8 @@ static ssize_t demote_rq_store(struct gfs2_sbd *sdp, const char *buf, size_t len glops = gfs2_glops_list[gltype]; if (glops == NULL) return -EINVAL; + if (test_and_set_bit(SDF_DEMOTE, &sdp->sd_flags)) + fs_info(sdp, "demote interface used\n"); rv = gfs2_glock_get(sdp, glnum, glops, 0, &gl); if (rv) return rv; |