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| author | Bob Peterson <rpeterso@redhat.com> | 2017-08-16 11:30:06 -0500 |
|---|---|---|
| committer | Bob Peterson <rpeterso@redhat.com> | 2017-08-25 10:59:09 -0500 |
| commit | 942b0cddfbf66295effc9fd879ca85ae10638565 (patch) | |
| tree | 09af4106900fa8727cffab3e14d6ca859efe2fa0 /fs/gfs2/quota.c | |
| parent | cc1dfa8b7571ea16dec9a29e0f4c4cad90b2a761 (diff) | |
| download | linux-942b0cddfbf66295effc9fd879ca85ae10638565.tar.bz2 | |
GFS2: Withdraw for IO errors writing to the journal or statfs
Before this patch, if GFS2 encountered IO errors while writing to
the journal, it would not report the problem, so they would go
unnoticed, sometimes for many hours. Sometimes this would only be
noticed later, when recovery tried to do journal replay and failed
due to invalid metadata at the blocks that resulted in IO errors.
This patch makes GFS2's log daemon check for IO errors. If it
encounters one, it withdraws from the file system and reports
why in dmesg. A similar action is taken when IO errors occur when
writing to the system statfs file.
These errors are also reported back to any callers of fsync, since
that requires the journal to be flushed. Therefore, any IO errors
that would previously go unnoticed are now noticed and the file
system is withdrawn as early as possible, thus preventing further
file system damage.
Also note that this reintroduces superblock variable sd_log_error,
which Christoph removed with commit f729b66fca.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Diffstat (limited to 'fs/gfs2/quota.c')
| -rw-r--r-- | fs/gfs2/quota.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c index 739adf105d7f..e647938432bd 100644 --- a/fs/gfs2/quota.c +++ b/fs/gfs2/quota.c @@ -1474,8 +1474,11 @@ static void quotad_error(struct gfs2_sbd *sdp, const char *msg, int error) { if (error == 0 || error == -EROFS) return; - if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) + if (!test_bit(SDF_SHUTDOWN, &sdp->sd_flags)) { fs_err(sdp, "gfs2_quotad: %s error %d\n", msg, error); + sdp->sd_log_error = error; + wake_up(&sdp->sd_logd_waitq); + } } static void quotad_check_timeo(struct gfs2_sbd *sdp, const char *msg, |