Ich bin mir nicht sicher, was passiert ist, aber mein RAID 6, das als XFS-Speicher dient, hat aufgehört zu funktionieren
Zuerst habe ich SMART aller Geräte überprüft, aber bei keinem von ihnen ist ein Fehler aufgetreten.
cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md0 : inactive dm-8[1](S) dm-9[0](S) dm-11[3](S) dm-7[4](S) dm-10[2](S)
10736757757 blocks super 1.2
unused devices: <none>
Meine mdadm.conf:
ARRAY /dev/md0 level=raid6 num-devices=5 metadata=1.2 UUID=7a7b49b9:ebaf805a:a9ec676c:d6c31c13
devices=/dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
dann versuchte er anzuhalten und es wieder zusammenzusetzen:
mdadm --stop /dev/md0
mdadm --assemble --scan -v
mdadm: looking for devices for /dev/md0
mdadm: /dev/dm-12 is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/dm-6 is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/dm-5 is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/dm-4 is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/dm-3 is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/dm-2 is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/dm-1 is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/dm-0 is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/sdb is not one of /dev/dm-11,/dev/dm-10,/dev/dm- 9,/dev/dm-8,/dev/dm-7
mdadm: /dev/sdf2 is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/sdf1 is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/sdf is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/sdc is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/sdd is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/sde is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/sda is not one of /dev/dm-11,/dev/dm-10,/dev/dm-9,/dev/dm-8,/dev/dm-7
mdadm: /dev/dm-11 is identified as a member of /dev/md0, slot 3.
mdadm: /dev/dm-10 is identified as a member of /dev/md0, slot 2.
mdadm: /dev/dm-9 is identified as a member of /dev/md0, slot 0.
mdadm: /dev/dm-8 is identified as a member of /dev/md0, slot 1.
mdadm: /dev/dm-7 is identified as a member of /dev/md0, slot 4.
mdadm: added /dev/dm-9 to /dev/md0 as 0 (possibly out of date)
mdadm: added /dev/dm-10 to /dev/md0 as 2 (possibly out of date)
mdadm: added /dev/dm-11 to /dev/md0 as 3 (possibly out of date)
mdadm: added /dev/dm-7 to /dev/md0 as 4
mdadm: added /dev/dm-8 to /dev/md0 as 1
mdadm: /dev/md0 assembled from 2 drives - not enough to start the array
Dies gab mir den Hinweis, die Laufwerkszustände zu betrachten:
mdadm --examine /dev/dm-{7..11} | egrep 'dev|Update|Role|State|Chunk Size|Checksum'
/dev/dm-7:
State : clean
Update Time : Mon Dec 11 09:36:51 2017
Checksum : 5a065503 - correct
Chunk Size : 512K
Device Role : Active device 4
Array State : .A..A ('A' == active, '.' == missing, 'R' == replacing)
/dev/dm-8:
State : clean
Update Time : Mon Dec 11 09:36:51 2017
Checksum : b1d36af4 - correct
Chunk Size : 512K
Device Role : Active device 1
Array State : .A..A ('A' == active, '.' == missing, 'R' == replacing)
/dev/dm-9:
State : active
Update Time : Mon Dec 11 09:36:41 2017
Checksum : bbfe3106 - correct
Chunk Size : 512K
Device Role : Active device 0
Array State : AA..A ('A' == active, '.' == missing, 'R' == replacing)
/dev/dm-10:
State : active
Update Time : Sun Nov 19 01:00:27 2017
Checksum : f5b76272 - correct
Chunk Size : 512K
Device Role : Active device 2
Array State : AAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/dm-11:
State : active
Update Time : Tue Dec 5 23:58:46 2017
Checksum : fab4506f - correct
Chunk Size : 512K
Device Role : Active device 3
Array State : AA.AA ('A' == active, '.' == missing, 'R' == replacing)
Das erste ging am 19. November verloren. Das zweite am 5. Dezember und das letzte am 11. Dezember, was dazu führte, dass auch die anderen beiden aufhörten.
Was sind die richtigen Schritte, um den Überfall wieder zusammenzusetzen?