Hi All,

 

I upgraded to 6.2.1 and after the restart one of my cache drives wont mount. Cache pool says "Unmountable - No file system (no btrfs UUID)".  I downgraded back to 6.2 in case it was a driver issue but still the same. I have checked cables etc.

 

Where too from here?

 

Diagnostics attached.

 

Thanks in advance.

zadok-nas-diagnostics-20161011-2217.zip

You can try disconnecting one of the SSDs at a time, it has to be physically disconnect from the server, unassigning it is not enough and it will always result in an unmountable pool.

 

If that doesn't work:

 

https://lime-technology.com/wiki/index.php/Check_Disk_Filesystems#Drives_formatted_with_BTRFS

Sorry, what am I trying to achieve by physically disconnecting the faulty SSD? I've done this but the cache drives dont show as a pool anymore and they show as new devices.

 

I have checked the diagnostics from the URL you provided but the scrub requires the pool to be mounted, which it's not. Unless I'm reading it wrong. The btrfs restore doesnt seem to be available in unRAID... unless I dont know where to find it?

Sorry, what am I trying to achieve by physically disconnecting the faulty SSD? I've done this but the cache drives dont show as a pool anymore and they show as new devices.

 

There was a chance that the pool would mount removing one of the SSDs, if you were using the default mirror mode.

 

I have checked the diagnostics from the URL you provided but the scrub requires the pool to be mounted, which it's not. Unless I'm reading it wrong. The btrfs restore doesnt seem to be available in unRAID... unless I dont know where to find it?

 

It is.

 

btrfs restore

I'll give this a go when I get home. Thanks

Just advising that I got some data of one of the SSDs but not the other 2. I've purchased 2 new drives to replace the 3 and will ensure the new pool is a RAID1