Contents:
...
Wrong UUID on the six RAID drives: sda, sdb, sdc, sdd, sde, sdf.
Examine each drive through MDADM. It looks like each drive still shows the RAID level as RAID5.
Conclusion
| Code Block |
|---|
root@jupiter:/home# mdadm --examine /dev/sd[abcdef]1
/dev/sda1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 03f505ac:d5a96bac:5d4da761:810ad4a6
Name : jupiter:0 (local to host jupiter)
Creation Time : Tue Aug 15 12:04:05 2023
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 39063382016 (18626.87 GiB 20000.45 GB)
Array Size : 97658455040 (93134.36 GiB 100002.26 GB)
Data Offset : 264192 sectors
Super Offset : 8 sectors
Unused Space : before=264088 sectors, after=0 sectors
State : active
Device UUID : 1ce2160d:9a4d9d85:acfb481a:360faccc
Internal Bitmap : 8 sectors from superblock
Update Time : Sun Sep 24 15:52:42 2023
Bad Block Log : 512 entries available at offset 88 sectors
Checksum : 22583091 - correct
Events : 93758
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 0
Array State : AAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdb1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 03f505ac:d5a96bac:5d4da761:810ad4a6
Name : jupiter:0 (local to host jupiter)
Creation Time : Tue Aug 15 12:04:05 2023
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 39063382016 (18626.87 GiB 20000.45 GB)
Array Size : 97658455040 (93134.36 GiB 100002.26 GB)
Data Offset : 264192 sectors
Super Offset : 8 sectors
Unused Space : before=264088 sectors, after=0 sectors
State : active
Device UUID : 936b1233:4370fef4:a5b00add:ad78d8bf
Internal Bitmap : 8 sectors from superblock
Update Time : Sun Sep 24 15:52:42 2023
Bad Block Log : 512 entries available at offset 88 sectors
Checksum : 6da2fb23 - correct
Events : 93758
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 1
Array State : AAAAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdc1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 03f505ac:d5a96bac:5d4da761:810ad4a6
Name : jupiter:0 (local to host jupiter)
Creation Time : Tue Aug 15 12:04:05 2023
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 39063382016 (18626.87 GiB 20000.45 GB)
Array Size : 97658455040 (93134.36 GiB 100002.26 GB)
Data Offset : 264192 sectors
Super Offset : 8 sectors
Unused Space : before=264088 sectors, after=0 sectors
State : clean
Device UUID : cadf27f8:3814e183:fd4c0a6e:01a1908b
Internal Bitmap : 8 sectors from superblock
Update Time : Sun Sep 24 15:54:46 2023
Bad Block Log : 512 entries available at offset 88 sectors
Checksum : 1e50d87a - correct
Events : 93761
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : ..AAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdd1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 03f505ac:d5a96bac:5d4da761:810ad4a6
Name : jupiter:0 (local to host jupiter)
Creation Time : Tue Aug 15 12:04:05 2023
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 39063382016 (18626.87 GiB 20000.45 GB)
Array Size : 97658455040 (93134.36 GiB 100002.26 GB)
Data Offset : 264192 sectors
Super Offset : 8 sectors
Unused Space : before=264088 sectors, after=0 sectors
State : clean
Device UUID : 043ea22c:0b072966:70a48109:b02cfdb2
Internal Bitmap : 8 sectors from superblock
Update Time : Sun Sep 24 15:54:46 2023
Bad Block Log : 512 entries available at offset 88 sectors
Checksum : f7f70ca8 - correct
Events : 93761
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 3
Array State : ..AAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sde1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 03f505ac:d5a96bac:5d4da761:810ad4a6
Name : jupiter:0 (local to host jupiter)
Creation Time : Tue Aug 15 12:04:05 2023
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 39063382016 (18626.87 GiB 20000.45 GB)
Array Size : 97658455040 (93134.36 GiB 100002.26 GB)
Data Offset : 264192 sectors
Super Offset : 8 sectors
Unused Space : before=264088 sectors, after=0 sectors
State : clean
Device UUID : 22b3d070:6d3a7111:ceeb75e4:4f70cc8d
Internal Bitmap : 8 sectors from superblock
Update Time : Sun Sep 24 15:54:46 2023
Bad Block Log : 512 entries available at offset 88 sectors
Checksum : 9d314027 - correct
Events : 93761
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 4
Array State : ..AAAA ('A' == active, '.' == missing, 'R' == replacing)
/dev/sdf1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x1
Array UUID : 03f505ac:d5a96bac:5d4da761:810ad4a6
Name : jupiter:0 (local to host jupiter)
Creation Time : Tue Aug 15 12:04:05 2023
Raid Level : raid5
Raid Devices : 6
Avail Dev Size : 39063382016 (18626.87 GiB 20000.45 GB)
Array Size : 97658455040 (93134.36 GiB 100002.26 GB)
Data Offset : 264192 sectors
Super Offset : 8 sectors
Unused Space : before=264088 sectors, after=0 sectors
State : clean
Device UUID : 304c168f:5f981d99:1777b5dc:67771ac8
Internal Bitmap : 8 sectors from superblock
Update Time : Sun Sep 24 15:54:46 2023
Bad Block Log : 512 entries available at offset 88 sectors
Checksum : 75b0c98b - correct
Events : 93761
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 5
Array State : ..AAAA ('A' == active, '.' == missing, 'R' == replacing) |
Conclusion
The drives are still identified as RAID5, but the configuration is RAID0. At this point of the investigation, it was decided to wipe out the existing /dev/md127 (RAID0) with associated devices and re-create the RAID5 configuration.
REF: ZD-4301 / ZD-6131 / ZD-6713 / ZD-7113