On Thu, Mar 5, 2020 at 11:22 AM Wols Lists <antlists@xxxxxxxxxxxxxxx> wrote:
>
> On 05/03/20 14:53, Jinpu Wang wrote:
> > "mdadm /dev/md0 -a /dev/sdl1" should work for you to add the disk
> > back to array, maybe you can check first with "mdadm -E /dev/sdl1" to
> > make sure.
>
> Or better, --re-add or whatever the option is. If it can find the
> relevant data in the superblock, like bitmap or journal or whatever, it
> will just bring the disk up-to-date. If it can't, it functions just like
> add, so you've lost nothing but might gain a lot.
>
> Cheers,
> Wol
I tried re-add and I get the following error:
bill@bill-desk:~$ sudo mdadm /dev/md0 --re-add /dev/sdl1
mdadm: Cannot open /dev/sdl1: Device or resource busy
sdl is not mounted, and it doesn't seem to be a device mapper issue:
bill@bill-desk:~$ sudo dmsetup table
No devices found
Here is the current state of sdl:
bill@bill-desk:~$ sudo mdadm -E /dev/sdl1
/dev/sdl1:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x9
Array UUID : 06ad8de5:3a7a15ad:88116f44:fcdee150
Name : bill-desk:0 (local to host bill-desk)
Creation Time : Sat Sep 22 19:10:10 2018
Raid Level : raid5
Raid Devices : 4
Avail Dev Size : 15627786240 (7451.91 GiB 8001.43 GB)
Array Size : 23441679360 (22355.73 GiB 24004.28 GB)
Data Offset : 264192 sectors
Super Offset : 8 sectors
Unused Space : before=264112 sectors, after=0 sectors
State : clean
Device UUID : 8c628aed:802a5dc8:9d8a8910:9794ec02
Internal Bitmap : 8 sectors from superblock
Update Time : Mon Mar 2 17:41:32 2020
Bad Block Log : 512 entries available at offset 40 sectors - bad
blocks present.
Checksum : 7b89f1e6 - correct
Events : 10749
Layout : left-symmetric
Chunk Size : 64K
Device Role : spare
Array State : AAA. ('A' == active, '.' == missing, 'R' == replacing)
What am I overlooking?
