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GFS2: Fix error handling when reading an invalid block from the journal 

When we read an invalid block from the journal, we should not call
withdraw, but simply print a message and return an error. It is
up to the caller to then handle that error. In the case of mount
that means a failed mount, rather than a withdraw (requiring a
reboot). In the case of recovering another nodes journal then
we return an error via the uevent.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
This commit is contained in:
Steven Whitehouse 2012-05-29 10:47:51 +01:00 committed by Steven Whitehouse
parent 23d0bb834e
commit 1b8ba31a88
2 changed files with 14 additions and 13 deletions
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9
fs/gfs2/lops.c
View File

@ -401,9 +401,14 @@ static void buf_lo_add(struct gfs2_sbd *sdp, struct gfs2_bufdata *bd)
goto out;
set_bit(GLF_LFLUSH, &bd->bd_gl->gl_flags);
set_bit(GLF_DIRTY, &bd->bd_gl->gl_flags);
gfs2_meta_check(sdp, bd->bd_bh);
gfs2_pin(sdp, bd->bd_bh);
mh = (struct gfs2_meta_header *)bd->bd_bh->b_data;
if (unlikely(mh->mh_magic != cpu_to_be32(GFS2_MAGIC))) {
printk(KERN_ERR
"Attempting to add uninitialised block to journal (inplace block=%lld)\n",
(unsigned long long)bd->bd_bh->b_blocknr);
BUG();
}
gfs2_pin(sdp, bd->bd_bh);
mh->__pad0 = cpu_to_be64(0);
mh->mh_jid = cpu_to_be32(sdp->sd_jdesc->jd_jid);
sdp->sd_log_num_buf++;

18
fs/gfs2/util.h
View File

@ -79,23 +79,19 @@ int gfs2_meta_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
const char *type, const char *function,
char *file, unsigned int line);
static inline int gfs2_meta_check_i(struct gfs2_sbd *sdp,
struct buffer_head *bh,
const char *function,
char *file, unsigned int line)
static inline int gfs2_meta_check(struct gfs2_sbd *sdp,
struct buffer_head *bh)
{
struct gfs2_meta_header *mh = (struct gfs2_meta_header *)bh->b_data;
u32 magic = be32_to_cpu(mh->mh_magic);
if (unlikely(magic != GFS2_MAGIC))
return gfs2_meta_check_ii(sdp, bh, "magic number", function,
file, line);
if (unlikely(magic != GFS2_MAGIC)) {
printk(KERN_ERR "GFS2: Magic number missing at %llu\n",
(unsigned long long)bh->b_blocknr);
return -EIO;
}
return 0;
}
#define gfs2_meta_check(sdp, bh) \
gfs2_meta_check_i((sdp), (bh), __func__, __FILE__, __LINE__)
int gfs2_metatype_check_ii(struct gfs2_sbd *sdp, struct buffer_head *bh,
u16 type, u16 t,
const char *function,