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Forum Discussion
Solved
BUG: Spontaneous Switch to Flex-Raid and Refusal to Change Back.
X-RAID volume built with two 4TB disks and six 8TB disks. Firmware 6.9.4
After swapping out one of the 4TB disks for an 8TB disk, previously used in another ReadyNAS, I was prompted to delete ...
VERIFIED:
Firmware 6.9.4
... will switch a unit in X-RAID mode to Flex-RAID (spontaneously without warning) upon Destruction of an inactive volume, even though the active volume is valid and accessible.
Firmware 6.9.4
... will not allow a unit in Flex-RAID mode to be switched back into X-RAID mode, if the active volume consists of more than one group (stripe) . Even if these stripes were created by X-RAID mode and have never been modified in Flex-RAID mode.
WORKAROUND:
- Downgrade to Firmware to 6.9.0
- switch the unit back into X-RAID mode
- upgrade back to the latest firmware
(this last step can be done while expansion is in progress, and the unit will stay in X-RAID mode)
No, that is not how this happened. Everything I stated in the original post occured while the unit was up, running and fully accesible. Nothing I have done is in any way unusual or different from the normal swap-in/out procedure used for hot swapping and expanding X-RAID volumes.
I've been doing this exactly this way for over three years, and seeing "inactive" volumes and removing them in Frontview as part of expanding an X-RAID volume is something I've seen many times. What is new is seeing the unit spontaneously switch from X-RAID to Flex-Raid without warning or prompting. And to spite having just one volume Frontview refuses to switch back into X-RAID mode, even though nothing has changed with the volume.
VERIFIED:
Firmware 6.9.4
... will switch a unit in X-RAID mode to Flex-RAID (spontaneously without warning) upon Destruction of an inactive volume, even though the active volume is valid and accessible.
Firmware 6.9.4
... will not allow a unit in Flex-RAID mode to be switched back into X-RAID mode, if the active volume consists of more than one group (stripe) . Even if these stripes were created by X-RAID mode and have never been modified in Flex-RAID mode.
WORKAROUND:
- Downgrade to Firmware to 6.9.0
- switch the unit back into X-RAID mode
- upgrade back to the latest firmware
(this last step can be done while expansion is in progress, and the unit will stay in X-RAID mode)
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