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From 62c713cb0c7791717c0b2a663ff0cc72842fe6c7 Mon Sep 17 00:00:00 2001
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From: "Darrick J. Wong" <darrick.wong@oracle.com>
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Date: Fri, 20 Nov 2020 17:03:27 -0500
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Subject: [PATCH] xfs_repair: check inode btree block counters in AGI
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Make sure that both inode btree block counters in the AGI are correct.
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Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
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Reviewed-by: Eric Sandeen <sandeen@redhat.com>
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Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
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---
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diff --git a/repair/scan.c b/repair/scan.c
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index 5b76212..086a3cd 100644
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--- a/repair/scan.c
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+++ b/repair/scan.c
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@@ -1933,6 +1933,12 @@ _("invalid inode count, inode chunk %d/%u, count %d ninodes %d\n"),
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return suspect;
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}
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+struct ino_priv {
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+ struct aghdr_cnts *agcnts;
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+ uint32_t ino_blocks;
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+ uint32_t fino_blocks;
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+};
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+
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/*
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* this one walks the inode btrees sucking the info there into
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* the incore avl tree. We try and rescue corrupted btree records
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@@ -1961,7 +1967,8 @@ scan_inobt(
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void *priv,
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const struct xfs_buf_ops *ops)
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{
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- struct aghdr_cnts *agcnts = priv;
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+ struct ino_priv *ipriv = priv;
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+ struct aghdr_cnts *agcnts = ipriv->agcnts;
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char *name;
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int i;
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int numrecs;
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@@ -1977,10 +1984,12 @@ scan_inobt(
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case XFS_FIBT_MAGIC:
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case XFS_FIBT_CRC_MAGIC:
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name = "fino";
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+ ipriv->fino_blocks++;
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break;
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case XFS_IBT_MAGIC:
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case XFS_IBT_CRC_MAGIC:
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name = "ino";
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+ ipriv->ino_blocks++;
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break;
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default:
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name = "(unknown)";
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@@ -2320,6 +2329,9 @@ validate_agi(
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xfs_agnumber_t agno,
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struct aghdr_cnts *agcnts)
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{
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+ struct ino_priv priv = {
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+ .agcnts = agcnts,
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+ };
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xfs_agblock_t bno;
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int i;
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uint32_t magic;
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@@ -2329,7 +2341,7 @@ validate_agi(
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magic = xfs_sb_version_hascrc(&mp->m_sb) ? XFS_IBT_CRC_MAGIC
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: XFS_IBT_MAGIC;
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scan_sbtree(bno, be32_to_cpu(agi->agi_level),
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- agno, 0, scan_inobt, 1, magic, agcnts,
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+ agno, 0, scan_inobt, 1, magic, &priv,
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&xfs_inobt_buf_ops);
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} else {
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do_warn(_("bad agbno %u for inobt root, agno %d\n"),
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@@ -2342,7 +2354,7 @@ validate_agi(
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magic = xfs_sb_version_hascrc(&mp->m_sb) ?
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XFS_FIBT_CRC_MAGIC : XFS_FIBT_MAGIC;
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scan_sbtree(bno, be32_to_cpu(agi->agi_free_level),
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- agno, 0, scan_inobt, 1, magic, agcnts,
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+ agno, 0, scan_inobt, 1, magic, &priv,
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&xfs_inobt_buf_ops);
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} else {
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do_warn(_("bad agbno %u for finobt root, agno %d\n"),
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@@ -2350,6 +2362,17 @@ validate_agi(
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}
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}
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+ if (xfs_sb_version_hasinobtcounts(&mp->m_sb)) {
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+ if (be32_to_cpu(agi->agi_iblocks) != priv.ino_blocks)
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+ do_warn(_("bad inobt block count %u, saw %u\n"),
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+ be32_to_cpu(agi->agi_iblocks),
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+ priv.ino_blocks);
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+ if (be32_to_cpu(agi->agi_fblocks) != priv.fino_blocks)
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+ do_warn(_("bad finobt block count %u, saw %u\n"),
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+ be32_to_cpu(agi->agi_fblocks),
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+ priv.fino_blocks);
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+ }
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+
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if (be32_to_cpu(agi->agi_count) != agcnts->agicount) {
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do_warn(_("agi_count %u, counted %u in ag %u\n"),
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be32_to_cpu(agi->agi_count), agcnts->agicount, agno);
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