"The disk is offline because it is out of capacity"

[jlee_henselphelps]

Hi. We have a FreeNAS 9.3 that is hosting an iSCSI LUN for one of our Windows 2012 server.

Today our volumes "disappeared" and when we went to Disk Management to see what is going on, it said Disk 1 (the iSCSI LUN) is "Offline (The disk is offline because it is out of capacity").

When we put it back online, the one of the volumes (E:) will appear (with 12TB of free space).

But as the second volume (F:) is loading (which we also know have 20TB of free space), both volumes will suddenly vanish and Disk Management would tell me that the disk is offline again!

We are at wits end with this one. Is there a way we can mount this iSCSI LUN and get to our data? Any help would greatly be appreciated! Thanks.

 

[sretalla]

Your first screenshot is key.

FreeNAS expects to see 20% free space in a pool and the contained datasets.

You are way beyond that in the pool shown and with the dataset showing 100%, the Copy on Write filesystem will be unable to do anything as there is no space to write in order to make any changes (deletions included).

You are going to need to rebuild that pool on bigger disks and restore from backup.

 

[jlee_henselphelps]

Thanks sretalla. So there is no way to resize or shrink that "extent0" file that we found on SSH? We just need to mount that volume so we can at least move the data from it to another volume on another NAS. Unfortunately, we don't have the backup due to the size of the volume and we are using it for archiving. Anyone know a way to stop Disk Managment to keep it from going offline? Thanks.

 

[jlee_henselphelps]

So we ordered a 4 bay JBOD external SAS tower with 4 x 8TB RED drives and a JBOD PCI controller card. Hopefully this will allow us to expand the existing RAIDz2 volume using this solution and allow FreeNAS to "release" the iSCSI LUN back into our Windows server. Fingers crossed.