/var/lib/varnish tmpfs recommended size and multiple _.vsm files

Web Teknik webteknik.tcmb at gmail.com
Wed May 27 22:19:30 CEST 2015


Any suggestions on size of /var/lib/varnish while mounted as tmpfs? We
only have one instance, therefore we thought it would be enough to set
it slightly bigger than 82MB, but while restarting Varnish, some other
shmlog file named _.vsm.4311 got created and Varnish failed to start
because of full disk. Therefore we could not be sure about size of


On Mon, May 25, 2015 at 6:12 PM, Web Teknik <webteknik.tcmb at gmail.com> wrote:
> Hi,
> After reading Varnish Book and Varnish wiki, we decided to put
> /var/lib/varnish directory to tmpfs with following line in /etc/fstab
> tmpfs                   /var/lib/varnish        tmpfs
> defaults,noatime,size=128M        0 0
> However, while trying restarting varnish, another shmlog file which is
> named _.vsm.4311 is also stored under /var/lib/varnish/<host> whose
> size is 42MB. As a result Varnish refused to start since disk is full.
> We couldn't reproduce the issue that _.vsm.somenumber (PID?) is
> created. Under which conditions multiple _.vsm files are created and
> in order to prevent failure, what is the recommended size for
> /var/lib/varnish directory?
> Thanks in advance.

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