Thank you for your help. I eventually managed to get it working. The
problem was related to stopping the squid service using the -k argument.
Closing squid using
sudo service squid stop
allows me to restore previous cache contents without any issues.
Am 17.01.2019 um 18:22 schrieb Alex Rousskov:
On 1/17/19 6:47 AM, Arne-Tobias Rak wrote:
my goal is to restore a previous cache state in squid 3.x running on
Ubuntu 16.04.
So far I have tried to create a copy of the /var/spool/squid and
/var/log/squid folders.
When restoring the cache, I first shutdown squid using
/sudo squid -k shutdown//
//sudo service squid stop -k
/and then restore the previously copied folder contents. I then start
squid again using
/sudo service squid start./
Unfortunately, this does not restore the previous cache contents, as the
spool/squid/swap.state file is modified during squid startup.
Modification of swap.state upon startup is not incompatible with cache
contents preservation.
In a clean shutdown context, the swap.state* files are essentially an
optimization. You may preserve/restore them if you want to speed up
building of the restored cache index OR you can delete them (and Squid
will slowly build a new cache index from scratch). Just do not leave the
newer swap.state* files when trying to restore the old cache.
If you preserve/restore the old swap.state* files, you may need to
preserve their timestamps as well.
If you need further help, please share cache.log entries related to
cache_dir loading and indicate why you think the old cache contents is
not preserved. Sharing your cache_dir configuration may also help.
Cheers,
Alex.
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