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authorkib <kib@FreeBSD.org>2008-10-13 14:05:01 +0000
committerkib <kib@FreeBSD.org>2008-10-13 14:05:01 +0000
commitf2993add72298f291a17b3b1f2d96011e252b26d (patch)
tree240c01e6fcdaa4c9535177ec7d408d948b7f0c7c
parent042990e0410fe3c6471eb9fcd91a863a780423d9 (diff)
downloadFreeBSD-src-f2993add72298f291a17b3b1f2d96011e252b26d.zip
FreeBSD-src-f2993add72298f291a17b3b1f2d96011e252b26d.tar.gz
Sync up summary information for cylinder groups while data is already
in memory during snapshot creation. This improves the results of the background fsck. Submitted by: tegge MFC after: 1 week
-rw-r--r--sys/ufs/ffs/ffs_snapshot.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/sys/ufs/ffs/ffs_snapshot.c b/sys/ufs/ffs/ffs_snapshot.c
index fab6798..20fbefc 100644
--- a/sys/ufs/ffs/ffs_snapshot.c
+++ b/sys/ufs/ffs/ffs_snapshot.c
@@ -864,6 +864,13 @@ cgaccount(cg, vp, nbp, passno)
}
UFS_LOCK(ip->i_ump);
ACTIVESET(fs, cg);
+ /*
+ * Recomputation of summary information might not have been performed
+ * at mount time. Sync up summary information for current cylinder
+ * group while data is in memory to ensure that result of background
+ * fsck is slightly more consistent.
+ */
+ fs->fs_cs(fs, cg) = cgp->cg_cs;
UFS_UNLOCK(ip->i_ump);
bcopy(bp->b_data, nbp->b_data, fs->fs_cgsize);
if (fs->fs_cgsize < fs->fs_bsize)
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