NAS not starting any services #25220444

StephenB wrote:

I've just run into this also (seeing a bunch of restart.2015*.log files but am not seeing jna files)- and opened a ticket with crashplan support. Even with 8 GB of ram you will be limited to ~3700M heap size. The Crashplan JVM is 32 bit, so the address space is 4 GB. Some of the address space is reserved. You can probe it with java -XmxAAAAm -showversion. If AAAA is small enough, the command will display some java info. If it gets much over 3715 on my pro6 it will crash. FWIW my volume size is ~8.5TB and ~550K files. The size (and crashplan) have been stable for quite a while. Crashplan began to fail a couple of weeks ago. There was about 100 GB of churn (17K files) in one folder that may have triggered it.

Just to follow up on this...

I was able to get backups going again with help from Crashplan support. The fix required adjusting the retention for deleted files from the default "never" down to 6 months, and then compacting the archive. That reduced the size of the server archive from ~19 TB down to ~10 TB. (De-duplication is against the server achive, not the local storage - so reducing that size helps). Then I rebuilt the cache and rebooted the NAS.

I am getting more memory for the Pro, since this will likely happen again at some point in the future.

One small mystery - my backups are working, with much less memory than Crashplan says is needed. One reason might be because compression is off and de-duplication is set to "minimal".

StephenB wrote:
One of my questions is whether crashplan can run with a 64bit mode jvm on linux.

Crashplan support says yes.