md_checker 0 and 1 missing

[mastrasser]

Qnap TS-869 Pro
Firmware version: 4.3.4.2242 Build 20221124
Memory: 3000

I constantly get the File system not clean message, running the file system check does not help. Sometimes shutting it down and waiting a minute before turning it back on produces a DatVol1 that works. most of the time it shows read only , I rebuild the raid before and it worked for a while , then back to the issue

trying to unmount md1 produces
umount /dev/md1
umount: /dev/md1: not mounted

trying to mount MD1 gives me
mount /dev/md1
mount: can't find /dev/md1 in /etc/fstab or /etc/mtab


running a md_checker produces 0 and 1 missing

Code: Select all

[~] # md_checker

Welcome to MD superblock checker (v1.4) - have a nice day~

Scanning system...

HAL firmware detected!
Scanning Enclosure 0...

RAID metadata found!
UUID:           1c699e72:64a6916f:cca40064:a11d0845
Level:          raid5
Devices:        8
Name:           md1
Chunk Size:     64K
md Version:     1.0
Creation Time:  Jan 7 07:12:13 2022
Status:         ONLINE (md1) [_UUUUUUU]
===============================================================================
 Disk | Device | # | Status |   Last Update Time   | Events | Array State
===============================================================================
 --------------  0  Missing   -------------------------------------------
 --------------  1  Missing   -------------------------------------------
   3  /dev/sdc3  2   Active   Jun  6 12:33:22 2023     3949   .AAAAAAA
   4  /dev/sdd3  3   Active   Jun  6 12:33:22 2023     3949   .AAAAAAA
   5  /dev/sde3  4   Active   Jun  6 12:33:22 2023     3949   .AAAAAAA
   6  /dev/sdf3  5   Active   Jun  6 12:33:22 2023     3949   .AAAAAAA
   7  /dev/sdg3  6   Active   Jun  6 12:33:22 2023     3949   .AAAAAAA
   8  /dev/sdh3  7   Active   Jun  6 12:33:22 2023     3949   .AAAAAAA
===============================================================================

do you have any ideas what I can try. I really don't want to get rid of it, it's a nice unit.

[dolbyman]

Two missing devices in a RAID5 should be game over.

Wonder if one of the missing drives was a hotspare (otherwise this RAID5 would not be 'online')

No need to get rid of your NAS, only thing is to rebuild the RAID and restore from backups

[mastrasser]

that is the thing, it is not the entire thig make no sense.
I got the raid to return, by shutting down and bringing it back up. the GUI of Qnap shows everything fine with the drives

[dolbyman]

There is probably a hiccup in the system, maybe a bug in a certain firmware, or a power outage or some other reason