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Forum Discussion
versoit
Jan 22, 2016Aspirant
No volume exists after device restart!! Need urgent help
Hi. We have ReadyNAS RN31600 as iSCSI target device. We have (had) two LUNs of 8 terabytes each built on X-RAID 5, that are presented to a Windows Server. This device is under one year old, a...
- Jan 22, 2016
I suggest contacting support (support.netgear.com), as I think that will be faster than starting here.
karian
Jan 26, 2016Aspirant
Mr. xxxx xxxx from Netgear support is investigating this. Case number is 26362565.
Edited out personal Netgear information - StephenB
kohdee
Jan 26, 2016NETGEAR Expert
karian wrote:
Mr. xxxx xxxx from Netgear support is investigating this. Case number is 26362565.
Edited out personal Netgear information - StephenB
Looks like you have a btrfs filesystem error:
BTRFS critical (device md127): corrupt leaf, bad key order: block=810713088,root=1, slot=226
I know you mentioned you were working with support. In reality, this error could take several days or weeks to work through.
It looks like you filled up your data volume. It is sitting at 93% which is not advised by NETGEAR. NETGEAR recommends not exceeding 80-85% of total volume capacity (for reasons such as these, as well as performance).
Maybe your ReadyNAS'll let you boot into Volume Read Only mode. Otherwise, to save time, you might want to consider restoring backup of your data. Since OP said this is a backup device, might benefit from just factory defaulting and restarting from scratch (fresh file system).
- versoitJan 27, 2016Aspirant
kohdee wrote:
karian wrote:Mr. xxxx xxxx from Netgear support is investigating this. Case number is 26362565.
Edited out personal Netgear information - StephenB
Looks like you have a btrfs filesystem error:
BTRFS critical (device md127): corrupt leaf, bad key order: block=810713088,root=1, slot=226
I know you mentioned you were working with support. In reality, this error could take several days or weeks to work through.
It looks like you filled up your data volume. It is sitting at 93% which is not advised by NETGEAR. NETGEAR recommends not exceeding 80-85% of total volume capacity (for reasons such as these, as well as performance).
Maybe your ReadyNAS'll let you boot into Volume Read Only mode. Otherwise, to save time, you might want to consider restoring backup of your data. Since OP said this is a backup device, might benefit from just factory defaulting and restarting from scratch (fresh file system).
Thanks for the information. I know there's a chance we will lose all data and have to start from the scracth, but it would save us a whole lot of time and work if we could somehow restore the missing LUN's or data.
Our LUN's we're thick provisioned from the beginning, meaning that the used space capacity has been the same almost from the beginning at the same percentage (2x8 TB's from a total of ~18 TB's capacity). We have had no problems with it before.
Also, I could not find a recommendation from the ReadyNAS manual (6.4.1) that used capacity should stay at 80-85% maximum, where is this information mentioned?
Edit: correction to the original information: first LUN is 8 Tbytes, second is 8,9 Tbytes, with a combined size of 16,9 Tbytes from a total of 18,2Tbytes (92,8% allocated).
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