topic Re: Upgrade R81.20 to R82 in Firewall and Security Management

Upgrade R81.20 to R82

Jips02 — Mon, 12 Jan 2026 12:36:25 GMT

Before I upgrade to R82 I created a snapshot. After I upgraded to R82 an autosnap is created.

Now I want to upgrade to R82 with the recommended T44 JHF, but I don't have space in the /var/log i only have 1.6Gb left.

Can deleting my manual Snapshot solve this?

Also, can I use the autosnap created after my base R82 upgrade to revert back to my R81.20 in case something fails?

Re: Upgrade R81.20 to R82

PhoneBoy — Mon, 12 Jan 2026 15:23:45 GMT

Yes, you can use the snapshot taken from R81.20 prior to the upgrade to R82 to revert.
However, deleting snapshots won't help your space with /var/log as they are stored on a different (hidden) partition.

Re: Upgrade R81.20 to R82

the_rock — Mon, 12 Jan 2026 18:55:38 GMT

I believe this is the same thing you asked me via private message. Sorry, just saw your post now. If yes, then you can easily delete any existing snapshots, as one woud auto generate during upgrade anyway. If you have any current backups, maybe get them off the fw and delete those, as they would free up space in /var/log

Or run command I sent you -> find /var/log -size +500M (check for any files bigger than 500MBs in /var/log dir)

Hope that helps.

Re: Upgrade R81.20 to R82

Bob_Zimmerman — Mon, 12 Jan 2026 19:28:46 GMT

The AutoSnap##### is actually taken before the upgrade. Snapshots in general go into unallocated space. They don't take up any space in /var/log unless you export them there.

As for cleaning up /var/log, after firewall logs and exported copies of snapshots, you should check the CPda/repository directory. It will have the CPUSE packages for all the jumbos you have downloaded on the system. That tends to get huge on systems which automatically download packages.

Re: Upgrade R81.20 to R82

Gaurav_Pandya — Tue, 13 Jan 2026 11:04:01 GMT

As stated by PhoneBoy, /var/log has different partition than where snapshot stores.
You can find large files by du -sh /var/log/*
Delete old logs - $FWDIR/log/ and remove old files
Remove backup files - Delete old *.tgz backup/snapshot files, often in /var/log/CPbackup/backups
Cleanup upgrade files - Remove old installation directories in /var/log/opt/