[CentOS] Accidentally nuked my system - any suggestions ?
Nicolas Kovacs
info at microlinux.fr
Wed Dec 5 05:37:17 UTC 2018
Le 04/12/2018 à 23:50, Stephen John Smoogen a écrit :
> In the rescue mode, recreate the partition table which was on the sdb
> by copying over what is on sda
>
>
> sfdisk –d /dev/sda | sfdisk /dev/sdb
>
> This will give the kernel enough to know it has things to do on
> rebuilding parts.
Once I made sure I retrieved all my data, I followed your suggestion,
and it looks like I'm making big progress. The system booted again,
though it feels a bit sluggish. Here's the current state of things.
[root at alphamule:~] # cat /proc/mdstat
Personalities : [raid1]
md125 : active raid1 sdb2[1] sda2[0]
512960 blocks super 1.0 [2/2] [UU]
bitmap: 0/1 pages [0KB], 65536KB chunk
md126 : inactive sda1[0](S)
16777216 blocks super 1.2
md127 : active raid1 sda3[0]
959323136 blocks super 1.2 [2/1] [U_]
bitmap: 8/8 pages [32KB], 65536KB chunk
unused devices: <none>
Now how can I make my RAID array whole again? For the record, /dev/sda
is intact, and /dev/sdb is the faulty disk. How can I force
synchronization with /dev/sda?
Cheers,
Niki
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