From 5f3eae7546093d845ca8ada1b95714202a136a1a Mon Sep 17 00:00:00 2001 From: Bob Peterson Date: Wed, 8 Aug 2007 16:52:09 -0500 Subject: [PATCH] [GFS2] invalid metadata block - REVISED This is for bugzilla bug #248176: GFS2: invalid metadata block Patches 1 thru 3 were accepted upstream, but there were problems with 4 and 5. Those issues have been resolved and now the recovery tests are passing without errors. This code has gone through 41 * 3 successful gfs2 recovery tests before it hit an unrelated (openais) problem. This is a complete rewrite of patch 4 for bug #248176. Part of the problem was that inodes were being recycled before their buffers were flushed to the journal logs. Another problem was that the clone bitmaps were being searched for deleted inodes to recycle, but only the "real" bitmaps should be searched for that purpose. Signed-off-by: Bob Peterson Signed-off-by: Steven Whitehouse --- fs/gfs2/rgrp.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index b93ac45b88bb..2d7f7ea0c9a8 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -865,12 +865,15 @@ static struct inode *try_rgrp_unlink(struct gfs2_rgrpd *rgd, u64 *last_unlinked) struct inode *inode; u32 goal = 0, block; u64 no_addr; + struct gfs2_sbd *sdp = rgd->rd_sbd; for(;;) { if (goal >= rgd->rd_data) break; + down_write(&sdp->sd_log_flush_lock); block = rgblk_search(rgd, goal, GFS2_BLKST_UNLINKED, GFS2_BLKST_UNLINKED); + up_write(&sdp->sd_log_flush_lock); if (block == BFITNOENT) break; /* rgblk_search can return a block < goal, so we need to @@ -1295,7 +1298,9 @@ static u32 rgblk_search(struct gfs2_rgrpd *rgd, u32 goal, allocatable block anywhere else, we want to be able wrap around and search in the first part of our first-searched bit block. */ for (x = 0; x <= length; x++) { - if (bi->bi_clone) + /* The GFS2_BLKST_UNLINKED state doesn't apply to the clone + bitmaps, so we must search the originals for that. */ + if (old_state != GFS2_BLKST_UNLINKED && bi->bi_clone) blk = gfs2_bitfit(rgd, bi->bi_clone + bi->bi_offset, bi->bi_len, goal, old_state); else