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ReadyNAS Ultra 4 - The array is still in degraded mode
Hello just added two new 4 TB drive to my Ultra4; first drive loaded and sync correctly however after installing, test and sync the 2nd I'm now in Unprotected mode with the following messge:
"RAID sync finished on volume C. The array is still in degraded mode, however. This can be caused by a disk sync failure or failed disks in a multi-parity disk array."
Current config is as follows
Ch 1 : WDC WD40EFRX-68N32N0 [3726 GB] 3721 GB allocated (disk failured)
Ch 2 : WDC WD40EFRX-68N32N0 [3726 GB] 3721 GB allocated
Ch 3 : WDC WD30EFRX-68EUZN0 [2794 GB] 2790 GB allocated
Ch 4 : WDC WD30EFRX-68EUZN0 [2794 GB] 2790 GB allocated
I've removed the failed drive formated it and scanned it for any faults, everything came back clean; tried installing it again to the same result.
I can provide logs to anyone who needs them. I'd appreciate any help that you could provide.
dlavineway wrote:
I've tried posting the mdstat.log contents multiple time unfortunatly the post keeps disappearing, trying it as an attachment
Likely just caught in the spam filter.
Personalities : [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] md4 : active raid5 sda5[0] sdb5[1] 976750784 blocks super 1.2 level 5, 64k chunk, algorithm 2 [2/2] [UU] md3 : active raid5 sda4[4] sdc4[3] sdd4[2] sdb4[5] 5860511616 blocks super 1.2 level 5, 64k chunk, algorithm 2 [4/4] [UUUU] md2 : active raid5 sdd3[7] sdb3[5] sdc3[4] 2916119040 blocks super 1.2 level 5, 64k chunk, algorithm 2 [4/3] [_UUU] md1 : active raid1 sda2[6] sdb2[5] sdc2[4] sdd2[7] 524276 blocks super 1.2 [4/4] [UUUU] md0 : active raid1 sda1[6] sdb1[5] sdc1[4] sdd1[7] 4193268 blocks super 1.2 [4/4] [UUUU] unused devices: <none>
It looks like the problem is with md2 (and that you started off with a 4x1 TB array).
You could try
- removing the disk
- power down the NAS
- disconnect from the power main for a few minutes (maybe 15)
- reboot the NAS
- reinsert the disk.
Part of the rationale here is to clear out any bios state associated with the disk. Sometime the NAS drivers will declare a SATA bay down, and this should make sure it's up again.
18 Replies
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What RAID mode are you running?
One thing you can try - connect the disk to a Windows PC and test it with WD's lifeguard program. Use the "advanced" write zeros test this time - it sometimes picks up issues that the non-destructive test misses.
Also, have you looked at the smart statistics in the logs?
Hi StephenB
Raid Mode: RAID Level X-RAID2, 4 disksSmart status: says Dead
When I tested the drive orginially I used AOMEI partition assistant from: https://www.disk-partition.com/ and used the quick scan
dlavineway wrote:
When I tested the drive orginially I used AOMEI partition assistant from: https://www.disk-partition.com/ and used the quick scan
Then I suggest retesting with Lifeguard. Do the long non-destructive test first - if it passes, move on to the full write-zeros test. I suspect one of those two tests will fail.
dlavineway wrote:
Smart status: says Dead
You are likely looking at the web ui. You should see a lot more in disk_smart.log (in the log zip). That would include reallocated and current pending sectors, uncorrectable errors, crc error counts, etc.
On the last test of lifeguard, so far the drive is passing the test.
mdstat.log
Personalities : [raid0] [raid1] [raid10] [raid6] [raid5] [raid4] md4 : active raid5 sda5[0] sdb5[1] 976750784 blocks super 1.2 level 5, 64k chunk, algorithm 2 [2/2] [UU] md3 : active raid5 sda4[4] sdc4[3] sdd4[2] sdb4[5] 5860511616 blocks super 1.2 level 5, 64k chunk, algorithm 2 [4/4] [UUUU] md2 : active raid5 sdd3[7] sdb3[5] sdc3[4] 2916119040 blocks super 1.2 level 5, 64k chunk, algorithm 2 [4/3] [_UUU] md1 : active raid1 sda2[6] sdb2[5] sdc2[4] sdd2[7] 524276 blocks super 1.2 [4/4] [UUUU] md0 : active raid1 sda1[6] sdb1[5] sdc1[4] sdd1[7] 4193268 blocks super 1.2 [4/4] [UUUU] unused devices: <none>
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