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RN516 can no longer save to or access iSCSI
Good morning.
My Nas started playing up a few days ago, looking to the community for help.
Currently the NAS is 80% full but still has 2.5Tb free space. (6x 3Tb drives in Raid 5)
There's a thin provisioned 5tb iScsi volume/LUN which is showing as 4Tb consumed.
The rest of the drive is accessible via a share.
Recently the NAS is stopping me from saving to it claiming to be full. Simple check with Notepad yields "the location on drive F: is full" (F: being a mapped drive to the share)
and probably related to this, even though the iSCSI initiator shows as connected, and drive management recognises a 5Tb drive, it only recognises it as RAW and 100% free space. I'm hoping the data on that LUN is safe and both issues are related to one problem.
But where do I look? I had one suggestion that some NAS reserve a portion of the disk space for cache? 20% of the drive?
I updated firmware to 6.6.0 but no joy.
Help?
Thanks!
The space on the data volume is fully allocated. Please backup your data then run a balance.
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ListerOsmeg wrote:
I had one suggestion that some NAS reserve a portion of the disk space for cache? 20% of the drive?
Not sure what NAS those might be, but ReadyNAS don't do that.
There is a 4 GB OS partition, and if gets full the system will misbehave in a variety of ways. If that's your situation you should have seen some alerts on that - but perhaps you mixed them up with the data volume size alerts you'd also be getting. So look in the logs, and see if that's your situation.
You might want to engage support on this (though they will charge).
You could have a fully allocated data volume with the allocation for data or metadata fully utilised. There are multiple possibilities.
You could start by looking at e.g. btrfs.log and volume.log. You could also send in your logs (see the Sending Logs link in my sig).
logs sent
Update:
I deleted through the web interface aprox 30Gb of data from the share. Tested with notepad and I could save. I put the iSCSI drive back into online mode and it popped up correctly, showing all files and available space, did warn that it needed scanning though.
I'd still like help in identifying the problem because if there's a cutoff point at say 80% usage I could hit it again very quickly.
The space on the data volume is fully allocated. Please backup your data then run a balance.
Is the backup precautionary? Just unless I buy a new NAS I've nowhere to store that much data.
How do I do a balance? Not something I've seen before, what does it do?
When you say the space on the data volume is fully allocated, is that in an area I can't see on the web gui because it's showing 2.7tb free space now.
edit: Balancing isn't supposed to wipe data it seems so I guess it's precutionary to take a backup.
Balancing seems to be something to do with data/metadata I assume one of those is full and balancing will resolve it.
found this that explains balancing for me..
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