Another ZFS RELENG_7/i386 strangeness: Operation not permitted

[Dmitry Morozovsky]

Dear colleagues,

stable/7 as of yesterday. Operation not permitted errors during 
`rsync -avH --fileflags' to ZFS. Investigating:

root at woozle:/usr/ports# la -io 
/w/backup/woozle/var/log/www/woozle/.access_log.9.gz.*
73613 -rw-r--r--  1 root  wheel  - 1200326 Sep 25  2005 /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.bg9Zcw
73728 -rw-r--r--  1 root  wheel  - 1200326 Sep 25  2005 /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.dxux3T
28355 -rw-r--r--  1 root  wheel  - 1200326 Sep 25  2005 /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.wxuWSQ
root at woozle:/usr/ports# rm -f !$
rm -f /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.*
rm: /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.bg9Zcw: Operation not permitted
rm: /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.dxux3T: Operation not permitted
rm: /w/backup/woozle/var/log/www/woozle/.access_log.9.gz.wxuWSQ: Operation not permitted

zfs umount/mount does not fix the problem. turning on vfs.zfs.debug does not 
reveal anything.

WTF? (sorry ;)  I'm puzzled.

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