diff options
| author | Christoph Hellwig <hch@lst.de> | 2024-10-14 08:04:53 +0200 |
|---|---|---|
| committer | Carlos Maiolino <cem@kernel.org> | 2024-10-22 13:37:18 +0200 |
| commit | b882b0f8138ffa935834e775953f1630f89bbb62 (patch) | |
| tree | 5ff50966688ec22acb5947dfbb5b23d816ccd8da /fs | |
| parent | 6a18765b54e2e52aebcdb84c3b4f4d1f7cb2c0ca (diff) | |
xfs: error out when a superblock buffer update reduces the agcount
XFS currently does not support reducing the agcount, so error out if
a logged sb buffer tries to shrink the agcount.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/xfs/xfs_buf_item_recover.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/xfs/xfs_buf_item_recover.c b/fs/xfs/xfs_buf_item_recover.c index edf1162a8c9d..a839ff5dcaa9 100644 --- a/fs/xfs/xfs_buf_item_recover.c +++ b/fs/xfs/xfs_buf_item_recover.c @@ -713,6 +713,11 @@ xlog_recover_do_primary_sb_buffer( */ xfs_sb_from_disk(&mp->m_sb, dsb); + if (mp->m_sb.sb_agcount < orig_agcount) { + xfs_alert(mp, "Shrinking AG count in log recovery not supported"); + return -EFSCORRUPTED; + } + /* * Initialize the new perags, and also update various block and inode * allocator setting based off the number of AGs or total blocks. |