On Sun, Jun 24, 2018 at 12:24:01PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
>
> Rebuild the AGI header items with some help from the rmapbt.
>
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
> fs/xfs/scrub/agheader_repair.c | 211 ++++++++++++++++++++++++++++++++++++++++
> fs/xfs/scrub/repair.h | 2
> fs/xfs/scrub/scrub.c | 2
> 3 files changed, 214 insertions(+), 1 deletion(-)
>
>
> diff --git a/fs/xfs/scrub/agheader_repair.c b/fs/xfs/scrub/agheader_repair.c
> index 90e5e6cbc911..61e0134f6f9f 100644
> --- a/fs/xfs/scrub/agheader_repair.c
> +++ b/fs/xfs/scrub/agheader_repair.c
> @@ -698,3 +698,214 @@ xfs_repair_agfl(
> xfs_repair_cancel_btree_extents(sc, &agfl_extents);
> return error;
> }
> +
> +/* AGI */
> +
> +enum {
> + REPAIR_AGI_INOBT = 0,
> + REPAIR_AGI_FINOBT,
> + REPAIR_AGI_END,
> + REPAIR_AGI_MAX
> +};
XFS_BTNUM_INOBT?
Basically same infrastructure questions as last patch.
.....
> +/*
> + * Reinitialize the AGI header, making an in-core copy of the old contents so
> + * that we know which in-core state needs to be reinitialized.
> + */
> +STATIC void
> +xfs_repair_agi_init_header(
> + struct xfs_scrub_context *sc,
> + struct xfs_buf *agi_bp,
> + struct xfs_agi *old_agi)
> +{
> + struct xfs_agi *agi = XFS_BUF_TO_AGI(agi_bp);
> + struct xfs_mount *mp = sc->mp;
> +
> + memcpy(old_agi, agi, sizeof(*old_agi));
> + memset(agi, 0, BBTOB(agi_bp->b_length));
> + agi->agi_magicnum = cpu_to_be32(XFS_AGI_MAGIC);
> + agi->agi_versionnum = cpu_to_be32(XFS_AGI_VERSION);
> + agi->agi_seqno = cpu_to_be32(sc->sa.agno);
> + agi->agi_length = cpu_to_be32(xfs_ag_block_count(mp, sc->sa.agno));
> + agi->agi_newino = cpu_to_be32(NULLAGINO);
> + agi->agi_dirino = cpu_to_be32(NULLAGINO);
> + if (xfs_sb_version_hascrc(&mp->m_sb))
> + uuid_copy(&agi->agi_uuid, &mp->m_sb.sb_meta_uuid);
> +
> + /* We don't know how to fix the unlinked list yet. */
> + memcpy(&agi->agi_unlinked, &old_agi->agi_unlinked,
> + sizeof(agi->agi_unlinked));
> +}
and clear pagi_init?
> +/* Update the AGI counters. */
> +STATIC int
> +xfs_repair_agi_update_btree_counters(
_update_counts
Cheers,
Dave.
--
Dave Chinner
david@xxxxxxxxxxxxx
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