Andreas Klauer wrote on 09/14/2016 02:29 AM:
On Tue, Sep 13, 2016 at 10:18:41PM -0700, scar wrote:
i currently have four RAID-5 md arrays which i concatenated into one
logical volume (lvm2), essentially creating a RAID-50. each md array
was created with one spare disk.
That's perfect for switching to RAID-6. More redundancy should be
more useful than spares that only sync in when you already completely
lost redundancy ...
And the disks would also be covered by your checks that way ;)
i'm not sure what you're suggesting, that 4x 11+1 RAID5 arrays should be
changed to 1x 46+2 RAID6 array? that doesn't seem as safe to me. and
checkarray isn't going to check the spare disks just as it's not doing
now.... also that would require me to backup/restore the data so i can
create a new array
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