Cache won't mount after 6.4 upgrade

[whiteatom]

Hello all,

Just upgraded to 6.4 and when the machine restarted, I have "Unmountable: Unsupported partition layout" beside my XFS formatted cache drive. It's prompting me to format it, but that drive is where all my docker config are - and I'd really rather not lose all that.

 

I went through the "before you upgrade" section of the release announcemnt and removed the preclear plugin, no VMs, no /boot/extras folder.

 

A little poking around at it appears that my cache drive migth have an MBR table on it. I guess this isn't supported anymore? How can i mount this drive to get the data off of it and reformat it with a GUID table?

 

Model: ATA SanDisk SDSSDA24 (scsi)
Disk /dev/sdl: 240GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number  Start   End    Size   Type     File system  Flags
 1      1049kB  240GB  240GB  primary  xfs
 

Thanks,

 

whiteatom

 

PS: On a customer support thought... could the upgrade script not check for MBR partitions and hault the upgrade until this is dealt with? At a minumum, it should be mentioned in the upgrade notes. Also, under disk settigns, it seems that MBR is the only option for new disks - so is MBR supported in 6.4 and something else is wrong?

 

[JorgeB]

It is mentioned in the update notes thread, it's also an easy fix, downgrade back to v6.3.5, backup cache, upgrade again to v6.4.1, format cache and restore the data, you can use this procedure to help with the backup/restore.

[whiteatom]

I just found it.. thanks.. 

 

This should probably be added to the "before you upgrade" section!

 

Thanks again.

[whiteatom]

Are there downgrade instructions somewhere? searching isn't turning up much.

[JorgeB]

Copy all the bz* files from the flash previous folder to the flash root overwriting existing ones and reboot.

[whiteatom]

Roger..  for futre searchers.. UnRAID downgrade...

 

1) telent/SSH into your box

2) cp /boot/previous/bz* /boot/

3) reboot

 

Thanks for your help.