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authorBob Peterson <rpeterso@redhat.com>2019-11-20 08:53:14 -0500
committerAndreas Gruenbacher <agruenba@redhat.com>2019-11-21 11:37:41 +0100
commitade48088937f53fe0467162177726176813b9564 (patch)
tree01e5338d0678d9bca1b5a181b951ce8cdb452c78 /fs/gfs2
parent8f81180ac1837233a98a4e5b108df5874cf97836 (diff)
gfs2: Don't write log headers after file system withdraw
Before this patch, when a node withdrew a gfs2 file system, it wrote a (clean) unmount log header. That's wrong. You don't want to write anything to the journal once you're withdrawn because that's acknowledging that the transaction is complete and the journal is in good shape, neither of which may be a valid assumption when the file system is withdrawn. This is especially true if the withdraw was caused due to io errors writing to the journal in the first place. The best course of action is to leave the journal "as is" until it may be safely replayed during journal recovery, regardless of whether it's done by this node or another. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/log.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/gfs2/log.c b/fs/gfs2/log.c
index 72c8f30b1822..eb3f2e7b8085 100644
--- a/fs/gfs2/log.c
+++ b/fs/gfs2/log.c
@@ -693,12 +693,16 @@ void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
{
struct gfs2_log_header *lh;
u32 hash, crc;
- struct page *page = mempool_alloc(gfs2_page_pool, GFP_NOIO);
+ struct page *page;
struct gfs2_statfs_change_host *l_sc = &sdp->sd_statfs_local;
struct timespec64 tv;
struct super_block *sb = sdp->sd_vfs;
u64 dblock;
+ if (gfs2_withdrawn(sdp))
+ goto out;
+
+ page = mempool_alloc(gfs2_page_pool, GFP_NOIO);
lh = page_address(page);
clear_page(lh);
@@ -751,6 +755,7 @@ void gfs2_write_log_header(struct gfs2_sbd *sdp, struct gfs2_jdesc *jd,
gfs2_log_write(sdp, page, sb->s_blocksize, 0, dblock);
gfs2_log_submit_bio(&sdp->sd_log_bio, REQ_OP_WRITE | op_flags);
+out:
log_flush_wait(sdp);
}