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kern/51447: nullfs seems to not delete files properly
>Synopsis: nullfs seems to not delete files properly
>Arrival-Date: Sat Aug 27 11:30:02 +0000 2016
NetBSD 7.99.36 NetBSD 7.99.36 (GENERIC.201608232230Z) amd64
/ is FFSv2 (no special mount options)
/usr/pkgsrc is mounted as nullfs at /netbsd6/usr/pkgsrc.
# rm -rf /usr/pkgsrc/*/*/work
It appears some of my work directories were not deleted properly:
# cd /usr/pkgsrc/x11/qt5-qttools
# mkdir work
mkdir: work: No such file or directory
Running fsck -f /dev/rwd0a I see, among others:
UNALLOCATED I=8075587 OWNER=0 MODE=0
SIZE=0 MTIME=Jan 1 00:00 1970
I hae also seen errors of link count wrong and unref files.
finally there was (maybe because it was fsck on a live system):
FREE BLK COUNT(S) WRONG IN SUPERBLK
SUMMARY INFORMATION BAD
BLK(S) MISSING IN BIT MAPS
Most likely, it can be repeated by running any heavy filesystem load
in a similar setup. after it, fsck should be clean, but it is not.
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