Unable to delete files on ZFS volume

[Dan Naumov]

Hi.

As Kip pointed out, this is a known issue with write allocate
filesystems in general (not just ZFS). This is one of the several
reasons why SUN recommends you do not completely fill up a zpool (they
actually recommend to stay at or below 80% utilization). I have a
workaround for you, however:

Pick a file you don't need on the filled up ZFS volume. "Empty" the
file contents in a way of your chosing. This should give you some disk
space needed to use "rm" and further empty up your filesystem and
allow for normal operation. This is a bit ugly, but it works.

- Sincerely,
Dan Naumov




>>> On Sat, Jun 20, 2009 at 10:36 AM, Mister Olli<mister.olli at googlemail.com> wrote:
>>> > Hi,
>>> >
>>> > after filling up a ZFS volume until the last byte, I'm unable to delete
>>> > files, with error 'No space left on the device'.
>>> >
>>> >
>>> >
>>> > [root at template-8_CURRENT /test/data2]# df -h
>>> > Filesystem     Size    Used   Avail Capacity  Mounted on
>>> > /dev/ad0s1a    8.7G    5.2G    2.8G    65%    /
>>> > devfs          1.0K    1.0K      0B   100%    /dev
>>> > test             0B      0B      0B   100%    /test
>>> > test/data1     1.6G    1.6G      0B   100%    /test/data1
>>> > test/data2     341M    341M      0B   100%    /test/data2
>>> > [root at template-8_CURRENT /test/data2]# zfs list
>>> > NAME         USED  AVAIL  REFER  MOUNTPOINT
>>> > test        1.96G      0  26.6K  /test
>>> > test/data1  1.62G      0  1.62G  /test/data1
>>> > test/data2   341M      0   341M  /test/data2
>>> > [root at template-8_CURRENT /test/data2]# ls -l data1 |tail -n 20          <-- there are quite a lot of files, so I truncated ;-))
>>> > -rw-r--r--  1 root  wheel      3072 Jun 20 17:13 20090620165743
>>> > -rw-r--r--  1 root  wheel   9771008 Jun 20 17:11 20090620165803
>>> > -rw-r--r--  1 root  wheel    624640 Jun 20 17:12 20090620165809
>>> > -rw-r--r--  1 root  wheel   1777664 Jun 20 17:14 20090620165810
>>> > -rw-r--r--  1 root  wheel   4059136 Jun 20 17:15 20090620165817
>>> > -rw-r--r--  1 root  wheel  23778304 Jun 20 17:13 20090620165925
>>> > -rw-r--r--  1 root  wheel  20318208 Jun 20 17:13 20090620165952
>>> > -rw-r--r--  1 root  wheel  28394496 Jun 20 17:10 20090620170013
>>> > -rw-r--r--  1 root  wheel  23698432 Jun 20 17:12 20090620170021
>>> > -rw-r--r--  1 root  wheel  26476544 Jun 20 17:19 20090620170100
>>> > -rw-r--r--  1 root  wheel  19904512 Jun 20 17:15 20090620170132
>>> > -rw-r--r--  1 root  wheel  23815168 Jun 20 17:14 20090620170142
>>> > -rw-r--r--  1 root  wheel   6683648 Jun 20 17:11 20090620170225
>>> > -rw-r--r--  1 root  wheel  19619840 Jun 20 17:11 20090620170322
>>> > -rw-r--r--  1 root  wheel  13902848 Jun 20 17:13 20090620170331
>>> > -rw-r--r--  1 root  wheel  28981248 Jun 20 17:13 20090620170346
>>> > -rw-r--r--  1 root  wheel  18287616 Jun 20 17:11 20090620170355
>>> > -rw-r--r--  1 root  wheel  16762880 Jun 20 17:16 20090620170405
>>> > -rw-r--r--  1 root  wheel  26966016 Jun 20 17:10 20090620170429
>>> > -rw-r--r--  1 root  wheel   5252096 Jun 20 17:14 20090620170502
>>> > [root at template-8_CURRENT /test/data2]#  rm -rf data1
>>> > rm: data1/20090620141524: No space left on device
>>> > rm: data1/20090620025202: No space left on device
>>> > rm: data1/20090620014926: No space left on device
>>> > rm: data1/20090620075405: No space left on device
>>> > rm: data1/20090620155124: No space left on device
>>> > rm: data1/20090620105723: No space left on device
>>> > rm: data1/20090620170100: No space left on device
>>> > rm: data1/20090620040149: No space left on device
>>> > rm: data1/20090620002512: No space left on device
>>> > rm: data1/20090620052315: No space left on device
>>> > rm: data1/20090620083750: No space left on device
>>> > rm: data1/20090620063831: No space left on device
>>> > rm: data1/20090620155029: No space left on device
>>> > rm: data1/20090619234313: No space left on device
>>> > rm: data1/20090620115346: No space left on device
>>> > rm: data1/20090620075508: No space left on device
>>> > rm: data1/20090620145541: No space left on device
>>> > rm: data1/20090620093335: No space left on device
>>> > rm: data1/20090620101846: No space left on device
>>> > rm: data1/20090620132456: No space left on device
>>> > rm: data1/20090620040044: No space left on device
>>> > rm: data1/20090620091401: No space left on device
>>> > rm: data1/20090620162251: No space left on device
>>> > rm: data1/20090619220813: No space left on device
>>> > rm: data1/20090620010643: No space left on device
>>> > rm: data1/20090620052218: No space left on device
>>> >
>>> >
>>> >
>>> >
>>> >
>>> > Regards,
>>> > ---
>>> > Mr. Olli
>>> >
>>> > _______________________________________________
>>> > freebsd-current at freebsd.org mailing list
>>> > http://lists.freebsd.org/mailman/listinfo/freebsd-current
>>> > To unsubscribe, send any mail to "freebsd-current-unsubscribe at freebsd.org"
>>> >
>>>
>>>
>>>
>>
>>
>
>
>
> --
> When bad men combine, the good must associate; else they will fall one
> by one, an unpitied sacrifice in a contemptible struggle.
>
>    Edmund Burke
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