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Freeing up space on the OS partition (RAIDar 4.2.28, ReadyNAS Ultra 2)
From time to time (very rarely) my OS partition fills up to 100% causing all kinds of issues. Usually, the reason are some log-files that just became too big or too many. Once I had to move the Crash...
Okay, so thanks to mdgm's assistance, it turns out that the files that were clogging up the OS partition were in /mnt/NAS2 where I had mounted another volume and to which Crashplan was writing its backup archives. The problem was that for mysterious reasons that volume disappeared from /etc/fstab and was no longer mounted. And as a result, Crashplan was writing to /mnt/NAS2 as a directory in the OS partition. I would never have thought that it is possible to write to /mnt/NAS2 when the volume is not mounted but apparently it is just an ordinary directory in those conditions.
In order to prevent that in the future, I am now mounting that external volume under the data partition instead of the OS partition,
I'd look in frontview and its subfolders next.
If you enter
cd //
ls -al
Then any folder that has a -> /c/... is a link to the data volume and can be ignored. You can also ignore c
You can use e.g. the du command to see how much is used by a directory.
For example I may use commands such as
# du -csh /var
# du -csh /var/log/*
Most things under /var are on the root partition but if you have ftp enabled then the mounts under /var/ftp will be pointing to the data volume.
The locations you mentioned are the main ones to look at. Usually, but not always the culprit would be under one of those.
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