Issues following power on after being off for a couple of months

[hoppo1]

Hi there, I have a readynas 104 running 6.6.1. I powered it up yesterday after it was powered down end of Dec while i had some work completed. I noticed all my snapshots were missing when I checked through to see if all ok. I thought it strange as I should have at least a years worth if not more. I created a manual one ok and reset the snapshots to daily from previous weekly and they ran ok over night. I also cleared down some space deleting some old stuff i no longer needed.

This morning out of the blue it started emailing saying I am running out of space. It states I have 3.44 of 5.44 GB free but sent the following  errors - 

Fri Mar 3 2017 10:07:43		Volume: Less than 5% of volume media's capacity is free. Performance on volume media is degraded. To improve performance, you must add capacity.
Fri Mar 3 2017 9:57:31		Volume: Less than 20% of volume media's capacity is free. Performance on volume media will degrade if additional capacity is consumed. NETGEAR recommends that you add capacity to avoid performance degradation.

The 104 is just sat there there is nothing being copied to it or anything. Can someone suggest where I can take a look to see what's going on?

thanks

[StephenB]

I'm guessing you have anti-virus enabled.  Try disabling it (or alternatively install 6.7.0 beta).

[hoppo1]

Yes - Disabled and rebooted seems to have speeded things up a bit on the web interface. Still no snapshots though. How do I check if they are gone or just missing from the web interface? I've read on the forum about a config file might need repopulating but no mention of where and how you edit it.

[StephenB]

If you have ssh enabled, you could try this:

# touch /.force_snapshots_upgrade
# systemctl restart readynasd

 How important are they btw?

[hoppo1]

No big deal if they are gone. I dont mind starting from scratch I just dont want them occupying space if they are still there but not useable. 

[StephenB]

That's helpful to know.  Try the commands above, and see if they reappear.

Another option is to destroy the volume, recreate it, and then restore the data from backup.  Brute force of course, but ensures they are gone.

[hoppo1]

Ran the commands still no snapshots. Deleting volume is not an option as I don't have storage for everything elsewhere just the really important stuff. Is there anyway of seeing what snapshots are there at the command line? Are they just hidden away somewhere can they be manually deleted at the command line. It might be a case they are not there anymore i don't know but if they are I'll want to reclaim the space if i can't use them anymore.

[StephenB]

btrfs subvolume list -s /data should show you the snapshots on the data volume.