From d8914002a0391331a88d9f5de4a235220735d4cc Mon Sep 17 00:00:00 2001 From: Dave Chinner Date: Tue, 27 Aug 2013 11:39:37 +1000 Subject: [PATCH] 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 Reviewed-by: Ben Myers Signed-off-by: Ben Myers --- Reading git-format-patch failed