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xfs: add support for large btree blocks

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Add support for larger btree blocks that contains a CRC32C checksum,
a filesystem uuid and block number for detecting filesystem
consistency and out of place writes.

[dchinner@redhat.com] Also include an owner field to allow reverse
mappings to be implemented for improved repairability and a LSN
field to so that log recovery can easily determine the last
modification that made it to disk for each buffer.

[dchinner@redhat.com] Add buffer log format flags to indicate the
type of buffer to recovery so that we don't have to do blind magic
number tests to determine what the buffer is.

[dchinner@redhat.com] Modified to fit into the verifier structure.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Christoph Hellwig 2013-04-21 14:53:46 -05:00 • committed by Ben Myers
parent a2050646f6
commit ee1a47ab0e
17 changed files with 642 additions and 206 deletions
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29
fs/xfs/xfs_trans_buf.c
View file

@ -659,6 +659,7 @@ xfs_trans_binval(
ASSERT(XFS_BUF_ISSTALE(bp));
ASSERT(!(bip->bli_flags & (XFS_BLI_LOGGED | XFS_BLI_DIRTY)));
ASSERT(!(bip->__bli_format.blf_flags & XFS_BLF_INODE_BUF));
ASSERT(!(bip->__bli_format.blf_flags & XFS_BLF_TYPE_MASK));
ASSERT(bip->__bli_format.blf_flags & XFS_BLF_CANCEL);
ASSERT(bip->bli_item.li_desc->lid_flags & XFS_LID_DIRTY);
ASSERT(tp->t_flags & XFS_TRANS_DIRTY);
@ -671,6 +672,7 @@ xfs_trans_binval(
bip->bli_flags &= ~(XFS_BLI_INODE_BUF | XFS_BLI_LOGGED | XFS_BLI_DIRTY);
bip->__bli_format.blf_flags &= ~XFS_BLF_INODE_BUF;
bip->__bli_format.blf_flags |= XFS_BLF_CANCEL;
bip->__bli_format.blf_flags &= ~XFS_BLF_TYPE_MASK;
for (i = 0; i < bip->bli_format_count; i++) {
memset(bip->bli_formats[i].blf_data_map, 0,
(bip->bli_formats[i].blf_map_size * sizeof(uint)));
@ -751,6 +753,26 @@ xfs_trans_inode_alloc_buf(
bip->bli_flags |= XFS_BLI_INODE_ALLOC_BUF;
}
/*
* Set the type of the buffer for log recovery so that it can correctly identify
* and hence attach the correct buffer ops to the buffer after replay.
*/
void
xfs_trans_buf_set_type(
struct xfs_trans *tp,
struct xfs_buf *bp,
uint type)
{
struct xfs_buf_log_item *bip = bp->b_fspriv;
ASSERT(bp->b_transp == tp);
ASSERT(bip != NULL);
ASSERT(atomic_read(&bip->bli_refcount) > 0);
ASSERT((type & XFS_BLF_TYPE_MASK) != 0);
bip->__bli_format.blf_flags &= ~XFS_BLF_TYPE_MASK;
bip->__bli_format.blf_flags |= type;
}
/*
* Similar to xfs_trans_inode_buf(), this marks the buffer as a cluster of
@ -769,14 +791,9 @@ xfs_trans_dquot_buf(
xfs_buf_t *bp,
uint type)
{
xfs_buf_log_item_t *bip = bp->b_fspriv;
ASSERT(bp->b_transp == tp);
ASSERT(bip != NULL);
ASSERT(type == XFS_BLF_UDQUOT_BUF ||
type == XFS_BLF_PDQUOT_BUF ||
type == XFS_BLF_GDQUOT_BUF);
ASSERT(atomic_read(&bip->bli_refcount) > 0);
bip->__bli_format.blf_flags |= type;
xfs_trans_buf_set_type(tp, bp, type);
}