Another ZFS RELENG_7/i386 strangeness: Operation not permitted

[Dmitry Morozovsky]

On Tue, 26 Jan 2010, Dmitry Morozovsky wrote:

DM> Dear colleagues,
DM> 
DM> stable/7 as of yesterday. Operation not permitted errors during 
DM> `rsync -avH --fileflags' to ZFS. Investigating:
DM> 
DM> root at woozle:/usr/ports# la -io 
DM> /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.*
DM> 73613 -rw-r--r--  1 root  wheel  - 1200326 Sep 25  2005 /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.bg9Zcw
DM> 73728 -rw-r--r--  1 root  wheel  - 1200326 Sep 25  2005 /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.dxux3T
DM> 28355 -rw-r--r--  1 root  wheel  - 1200326 Sep 25  2005 /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.wxuWSQ
DM> root at woozle:/usr/ports# rm -f !$
DM> rm -f /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.*
DM> rm: /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.bg9Zcw: Operation not permitted
DM> rm: /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.dxux3T: Operation not permitted
DM> rm: /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.wxuWSQ: Operation not permitted
DM> 
DM> zfs umount/mount does not fix the problem. turning on vfs.zfs.debug does not 
DM> reveal anything.
DM> 
DM> WTF? (sorry ;)  I'm puzzled.

found the source: it's sunlnk flag on a directory, which behaves differently on 
UFS and ZFS: on UFS, this flag does not prevent removing files from the directory, only 
removing and renaming directory itself.

Should I file a PR?

-- 
Sincerely,
D.Marck                                     [DM5020, MCK-RIPE, DM3-RIPN]
[ FreeBSD committer:                                 marck at FreeBSD.org ]
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*** Dmitry Morozovsky --- D.Marck --- Wild Woozle --- marck at rinet.ru ***
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