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authorDave Chinner <dchinner@redhat.com>2013-08-27 11:39:37 +1000
committerBen Myers <bpm@sgi.com>2013-08-30 13:45:49 -0500
commitd8914002a0391331a88d9f5de4a235220735d4cc (patch)
tree4fbdcc1bae11941554c98651985878cf1e47ad36 /fs/xfs/xfs_inode_buf.h
parent50d5c8d8e938e3c4c0d21db9fc7d64282dc7be20 (diff)
downloadblackbird-op-linux-d8914002a0391331a88d9f5de4a235220735d4cc.tar.gz
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xfs: inode buffers may not be valid during recovery readahead
CRC enabled filesystems fail log recovery with 100% reliability on xfstests xfs/085 with the following failure: XFS (vdb): Mounting Filesystem XFS (vdb): Starting recovery (logdev: internal) XFS (vdb): Corruption detected. Unmount and run xfs_repair XFS (vdb): bad inode magic/vsn daddr 144 #0 (magic=0) XFS: Assertion failed: 0, file: fs/xfs/xfs_inode_buf.c, line: 95 The problem is that the inode buffer has not been recovered before the readahead on the inode buffer is issued. The checkpoint being recovered actually allocates the inode chunk we are doing readahead from, so what comes from disk during readahead is essentially random and the verifier barfs on it. This inode buffer readahead problem affects non-crc filesystems, too, but xfstests does not trigger it at all on such configurations.... Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Ben Myers <bpm@sgi.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs/xfs_inode_buf.h')
-rw-r--r--fs/xfs/xfs_inode_buf.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/xfs/xfs_inode_buf.h b/fs/xfs/xfs_inode_buf.h
index aae9fc465fe0..599e6c0ca2a9 100644
--- a/fs/xfs/xfs_inode_buf.h
+++ b/fs/xfs/xfs_inode_buf.h
@@ -48,5 +48,6 @@ void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
#endif /* DEBUG */
extern const struct xfs_buf_ops xfs_inode_buf_ops;
+extern const struct xfs_buf_ops xfs_inode_buf_ra_ops;
#endif /* __XFS_INODE_BUF_H__ */
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