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Forum Discussion
Ultra 4 on Safe mode, No Volume exist
Hi Team, I'm using a Ultra 4 Readynas on OS 6.10 4x2TB drives I recently have a power outage at my home and all of a sudden my NAS boots on safe mode. Its boots okay, goes to checking FS the...
eduj7im wrote:
I've removed the 2nd drive just to take a photo of it and mount it back again
and now 2nd drive is resyncing any thoughts? on the admin page it says there's 11 ATA errors
Did you hot-insert the drive? (FWIW, you shouldn't have).
Thanks for the response Stephen,
The NAS was shutdown before removing and reinserting it.
eduj7im wrote:
Thanks for the response Stephen,
The NAS was shutdown before removing and reinserting it.
Odd that it resynced then.
FWIW, in order to mount the volume you need both a healthy RAID array and a healthy file system.
It would be good to download the log zip file, and look at disk health,and at mdstat.log.
Hi StephenB
Thanks for the response.
Please Correct me if im wrong,
Looks like the drives are still healthy. How can I check if the FS is healthy?
Personalities : [raid0] [raid1] [raid10] [raid6] [raid5] [raid4]
md1 : active raid10 sdd2[3] sdc2[2] sdb2[1] sda2[0]
1044480 blocks super 1.2 512K chunks 2 near-copies [4/4] [UUUU]
md127 : active raid5 sda3[0] sdd3[3] sdc3[2] sdb3[4]
5845994496 blocks super 1.2 level 5, 64k chunk, algorithm 2 [4/4] [UUUU]
md0 : active raid1 zram0[0]
4190208 blocks super 1.2 [1/1] [U]
unused devices: <none>
/dev/md/0:
Version : 1.2
Creation Time : Mon Feb 10 15:13:15 2020
Raid Level : raid1
Array Size : 4190208 (4.00 GiB 4.29 GB)
Used Dev Size : 4190208 (4.00 GiB 4.29 GB)
Raid Devices : 1
Total Devices : 1
Persistence : Superblock is persistentUpdate Time : Mon Feb 10 15:15:34 2020
State : clean
Active Devices : 1
Working Devices : 1
Failed Devices : 0
Spare Devices : 0Consistency Policy : unknown
Name : 37c0ff7c:0 (local to host 37c0ff7c)
UUID : 635c45b3:7a11fd15:43d67b01:fa98d287
Events : 2Number Major Minor RaidDevice State
0 250 0 0 active sync /dev/zram0
/dev/md/data-0:
Version : 1.2
Creation Time : Sat Feb 23 04:13:35 2019
Raid Level : raid5
Array Size : 5845994496 (5575.17 GiB 5986.30 GB)
Used Dev Size : 1948664832 (1858.39 GiB 1995.43 GB)
Raid Devices : 4
Total Devices : 4
Persistence : Superblock is persistentUpdate Time : Mon Feb 10 15:13:52 2020
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 0
Spare Devices : 0Layout : left-symmetric
Chunk Size : 64KConsistency Policy : unknown
Name : 37c0ff7c:data-0 (local to host 37c0ff7c)
UUID : 55b1fa5f:47eeba04:c7f50a68:191a6770
Events : 3259Number Major Minor RaidDevice State
0 8 3 0 active sync /dev/sda3
4 8 19 1 active sync /dev/sdb3
2 8 35 2 active sync /dev/sdc3
3 8 51 3 active sync /dev/sdd3You could try running btrfs check /dev/md127 from ssh.
There is risk in using the repair option, but with no options the command won't try to repair anything - it should just analyze.
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