From 69aa9a8f87ff78dbccffef5f4d8ce4a893695af9 Mon Sep 17 00:00:00 2001 From: Bob Peterson Date: Dec 14 2018 15:12:28 +0000 Subject: gfs2-utils: Wrong hash value used to clean journals When fsck.gfs2 sees a dirty journal, (one that does not have a log header with the UNMOUNT flag set at the wrap-point), it replays the journal and writes a log header out to "clean" the journal. Unfortunately, before this patch, it was using the wrong hash value. So every time fsck.gfs2 was run, it would not recognize its own log header because of the wrong hash, and therefore it would always see the journal as dirty with every run (until the file system is mounted and unmounted, which would write a new correct log header). Therefore, multiple runs of fsck.gfs2 would always result in a replay of the journal, which remains "dirty." This patch changes function clean_journal so that it uses the correct hash function. Therefore, the journal will be truly clean and consecutive runs (or mounts) will find the journal clean. Signed-off-by: Bob Peterson Signed-off-by: Andrew Price --- diff --git a/gfs2/libgfs2/recovery.c b/gfs2/libgfs2/recovery.c index 6b14bf9..06f8111 100644 --- a/gfs2/libgfs2/recovery.c +++ b/gfs2/libgfs2/recovery.c @@ -241,7 +241,7 @@ int clean_journal(struct gfs2_inode *ip, struct gfs2_log_header *head) lh->lh_sequence = cpu_to_be64(head->lh_sequence + 1); lh->lh_flags = cpu_to_be32(GFS2_LOG_HEAD_UNMOUNT); lh->lh_blkno = cpu_to_be32(lblock); - hash = gfs2_disk_hash((const char *)lh, sizeof(struct gfs2_log_header)); + hash = lgfs2_log_header_hash(bh->b_data); lh->lh_hash = cpu_to_be32(hash); bmodified(bh); brelse(bh);