[CentOS] ssacli start rebuild?

Mon Nov 9 15:30:14 UTC 2020
Thomas Bendler <ml at bendler-net.de>

Am Fr., 6. Nov. 2020 um 20:38 Uhr schrieb hw <hw at gc-24.de>:

> [...]
> Some search results indicate that it's possible that other disks in the
> array have read errors and might prevent rebuilding for RAID 5.  I don't
> know if there are read errors, and if it's read errors, I think it would
> mean that these errors would have to affect just the disk which is
> mirroring the disk that failed, this being a RAID 1+0.  But if the RAID
> is striped across all the disks, that could be any or all of them.
> The array is still in production and still works, so it should just
> rebuild.
> Now the plan is to use another 8TB disk once it arrives, make a new RAID 1
> with the two new disks and copy the data over.  The remaining 4TB disks can
> then be used to make a new array.
> Learn from this that it can be a bad idea to use a RAID 0 for backups and
> that
> least one generation of backups must be on redundant storage ...

Just checked on one of my HP boxes, you can indeed not figure out if one of
the discs has read errors. Do you have the option to reboot the box and
check on the controller directly?

Kind regards Thomas