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As part of creating a snapshot, set fs->fs_fmod to 0 in the snapshot image

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because nothing ever changes this field for read-only mounts and we want
to verify that it is still 0 when we unmount.

Reviewed by:	mckusick
Approved by:	mckusick (mentor)
Sponsored by:	Netflix
This commit is contained in:
Chuck Silvers 2019-11-28 00:37:43 +00:00
parent 20a4e15451
commit 2ac044e6bc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=355150
1 changed files with 1 additions and 0 deletions
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sys/ufs/ffs/ffs_snapshot.c
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@ -803,6 +803,7 @@ ffs_snapshot(mp, snapfile)
brelse(nbp);
} else {
loc = blkoff(fs, fs->fs_sblockloc);
copy_fs->fs_fmod = 0;
copy_fs->fs_ckhash = ffs_calc_sbhash(copy_fs);
bcopy((char *)copy_fs, &nbp->b_data[loc], (u_int)fs->fs_sbsize);
bawrite(nbp);