Insufficent shmlog size causes frustrating varnish crash and error message

[cyberscribe]

First, thanks for a great plugin overall.

Recently varnishd crashed on us and gave the following very cryptic error on start:

Running VCC-compiler failed, exited with 2

VCL compilation failed

This happened even when run with -a and -b (i.e. no config file). Turns out this was due to /var/lib/varnish being full.

Unfortunately, there is no way that I can find to change the size of this tmpfs, only to disable it as a tmpfs (with the obvious performance implications).

It would be great if, in addition to shmlog_dir and shmlog_tempfs we could have e.g. a shmlog_tempfs_size or similar. Also, by default, I understand that the shmlog tmpfs mount should be around 170M -- i.e. greater than the current default of 128M.

For now, we have a workaround in place with the fstab module to increase the size before the varnish module tries to do so. It works, but it's a bit of a hack.

Thanks for considering.