varnish backing file gone missing

[Mark Moseley]

On Mon, Sep 26, 2011 at 12:54 PM, Matt Schurenko <MSchurenko at airg.com> wrote:
> Update:
>
>
>
> I noticed that I mistakenly created a 40GB  zero-filled file rather than a
> 48GB one:
>
>
>
> dd if=/dev/zero of=/tmp/varnish-cache bs=1G count=40
>
>
>
> Not sure if that would make any difference.
>
>
>
> Matt Schurenko
> Systems Administrator
>
>
> airG® Share Your World
> Suite 710, 1133 Melville Street
>
> Vancouver, BC  V6E 4E5
>
> P: +1.604.408.2228
>
> F: +1.866.874.8136
>
> E: MSchurenko at airg.com
>
> W: www.airg.com
>
> From: varnish-misc-bounces at varnish-cache.org
> [mailto:varnish-misc-bounces at varnish-cache.org] On Behalf Of Matt Schurenko
> Sent: September-26-11 12:43 PM
> To: varnish-misc at varnish-cache.org
> Subject: varnish backing file gone missing
>
>
>
> I just noticed that the backing file I configured varnish to use is now
> gone:
>
>
>
> [root at mvp13 ~]# ps -ef | grep varnishd
>
> root      4419     1  0 Sep07 ?        00:00:00 /usr/local/sbin/varnishd -s
> file,/tmp/varnish-cache,48G -T 127.0.0.1:2000 -a 0.0.0.0:80 -t 604800 -f
> /usr/local/etc/varnish/default.vcl -p http_headers 384 -p connect_timeout
> 4.0
>
>
>
> [root at mvp13 ~]# ls /tmp/varnish-cache
>
> ls: /tmp/varnish-cache: No such file or directory
>
>
>
> If I do an lsof I see this:
>
>
>
> varnishd   4420 nobody    4u      REG                8,1 51539607552
> 62160904 /tmp/varnish-cache (deleted)
>
>
>
> I’m pretty sure I never deleted it. Is this normal behaviour? What are the
> implications of this file being removed while varnish is running? Varnishd
> still appears to be working fine. I have another varnish server running but
> the backing file is still there. BTW I’m running varnish version 2.1.5.
>
>
>

Perhaps a log rotation script deleted it? If so and varnishd is still
running, it should show up in lsof with "(deleted)" next to the
pathname.