weird ENOSPC with defragment directory

weird ENOSPC with defragment directory

[Jon Nelson]

Most other directories on /var/cache, *except* those created by squid,
can be defragmented.
The filesystem was converted from ext3/4.

turnip:~ # uname -a
Linux turnip 2.6.34-12-default #1 SMP 2010-06-29 02:39:08 +0200 x86_64
x86_64 x86_64 GNU/Linux

(stock openSUSE 11.3 kernel)

turnip:~ btrfsctl -d /var/cache/squid/01/93
ioctl:: No space left on device
turnip:~ # find !$
find /var/cache/squid/01/93
/var/cache/squid/01/93
/var/cache/squid/01/93/00019321
/var/cache/squid/01/93/00019378
turnip:~ # ls -la !$
ls -la /var/cache/squid/01/93
total 2
drwxr-x--- 1 squid nogroup   32 Aug 13 17:13 .
drwxr-x--- 1 squid nogroup 1024 Jun  4 18:35 ..
-rw-r----- 1 squid nogroup 1777 Jul 13 22:31 00019321
-rw-r----- 1 squid nogroup  537 Jul 13 22:31 00019378
turnip:~ #

That seems... strange.

-- 
Jon

Re: weird ENOSPC with defragment directory

[Jon Nelson]

On Mon, Aug 16, 2010 at 10:15 PM, Jon Nelson <jnelson@jamponi.net> wrot=
e:
> Most other directories on /var/cache, *except* those created by squid=
,
> can be defragmented.
> The filesystem was converted from ext3/4.
>
> turnip:~ # uname -a
> Linux turnip 2.6.34-12-default #1 SMP 2010-06-29 02:39:08 +0200 x86_6=
4
> x86_64 x86_64 GNU/Linux
>
> (stock openSUSE 11.3 kernel)
>
> turnip:~ btrfsctl -d /var/cache/squid/01/93
> ioctl:: No space left on device
> turnip:~ # find !$
> find /var/cache/squid/01/93
> /var/cache/squid/01/93
> /var/cache/squid/01/93/00019321
> /var/cache/squid/01/93/00019378
> turnip:~ # ls -la !$
> ls -la /var/cache/squid/01/93
> total 2
> drwxr-x--- 1 squid nogroup =C2=A0 32 Aug 13 17:13 .
> drwxr-x--- 1 squid nogroup 1024 Jun =C2=A04 18:35 ..
> -rw-r----- 1 squid nogroup 1777 Jul 13 22:31 00019321
> -rw-r----- 1 squid nogroup =C2=A0537 Jul 13 22:31 00019378
> turnip:~ #
>
> That seems... strange.

It gets stranger. If I issue a 'sync' command, chances are the
defragment command will work. If I issue a bunch of them (in series,
however), then I get ENOSPC.

find /var/cache -xdev -type d -exec btrfsprogs -d {} \;

Seems to do it every time, with or without -depth. I get 100% success
and then 100% failure - no mixing.

--=20
Jon
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