How to assemble this array? Note, mdadm.conf has no array line.
Originally this was Raid5 with 4disk (sda1, sdb1, sdc1, sdd1)
The current /proc/mdstat list everything as spares:
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5]
[raid4] [raid10]
md0 : inactive sdc1[2](S) sdd1[4](S) sda1[0](S) sdb1[5](S)
23441559552 blocks super 1.2
The last working /proc/mdstat was (yes with failed disk):
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5]
[raid4] [raid10]
md0 : active raid5 sdb1[5](S) sdd1[4] sdc1[2] sda1[0](F)
17581168128 blocks super 1.2 level 5, 512k chunk, algorithm 2 [4/2] [__UU]
I ended up rebooting, but a force assemble returns all devices are
busy. What gives?
mdadm: /dev/sda1 is busy - skipping
mdadm: /dev/sdb1 is busy - skipping
mdadm: /dev/sdc1 is busy - skipping
mdadm: /dev/sdd1 is busy - skipping
Also know I that I had set sdb1 faulty and it came back as a spare and
rebuilt just prior to this problem.
== Drives examined =========
/dev/sda1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 13d20dae:40e86bdf:437f8b51:bf2b4dd8
Name : zippy:0 (local to host zippy)
Creation Time : Thu Oct 1 15:37:52 2015
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 11720779776 (5588.90 GiB 6001.04 GB)
Array Size : 17581168128 (16766.71 GiB 18003.12 GB)
Used Dev Size : 11720778752 (5588.90 GiB 6001.04 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 008c8a3f:9e4295b8:48bdc532:c6c2ab4d
Update Time : Thu Jun 9 21:22:12 2016
Checksum : 6c151ac3 - correct
Events : 406
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 0
Array State : AAAA ('A' == active, '.' == missing)
/dev/sdb1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 13d20dae:40e86bdf:437f8b51:bf2b4dd8
Name : zippy:0 (local to host zippy)
Creation Time : Thu Oct 1 15:37:52 2015
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 11720779776 (5588.90 GiB 6001.04 GB)
Array Size : 17581168128 (16766.71 GiB 18003.12 GB)
Used Dev Size : 11720778752 (5588.90 GiB 6001.04 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 4f7deb5f:32333098:c97b360f:578ea16f
Update Time : Fri Jun 10 11:44:26 2016
Checksum : 6a7750d8 - correct
Events : 412
Layout : left-symmetric
Chunk Size : 512K
Device Role : spare
Array State : ..AA ('A' == active, '.' == missing)
/dev/sdc1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 13d20dae:40e86bdf:437f8b51:bf2b4dd8
Name : zippy:0 (local to host zippy)
Creation Time : Thu Oct 1 15:37:52 2015
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 11720779776 (5588.90 GiB 6001.04 GB)
Array Size : 17581168128 (16766.71 GiB 18003.12 GB)
Used Dev Size : 11720778752 (5588.90 GiB 6001.04 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 60905555:5d6adfcc:0200168e:5bec3d80
Update Time : Fri Jun 10 11:44:26 2016
Checksum : 240c7d4f - correct
Events : 412
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : ..AA ('A' == active, '.' == missing)
/dev/sdd1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x0
Array UUID : 13d20dae:40e86bdf:437f8b51:bf2b4dd8
Name : zippy:0 (local to host zippy)
Creation Time : Thu Oct 1 15:37:52 2015
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 11720779776 (5588.90 GiB 6001.04 GB)
Array Size : 17581168128 (16766.71 GiB 18003.12 GB)
Used Dev Size : 11720778752 (5588.90 GiB 6001.04 GB)
Data Offset : 262144 sectors
Super Offset : 8 sectors
State : clean
Device UUID : d97144c5:35daac52:2ed50f5a:56b2a67d
Update Time : Fri Jun 10 11:44:26 2016
Checksum : e32b69c8 - correct
Events : 412
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 3
Array State : ..AA ('A' == active, '.' == missing)
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