On 2017-02-15, John R Pierce <pierce@xxxxxxxxxxxx> wrote:
> On 2/14/2017 4:48 PM, tdukes@xxxxxxxxxxxxxxxxxxx wrote:
>
>> 3 - Can additional drive(s) be added later with a changein RAID level
>> without current data loss?
>
> Only some systems support that sort of restriping, and its a dangerous
> activity (if the power fails or system crashes midway through the
> restriping operation, its probably not restartable, you quite likely
> will lose the whole volume)
Doesn't mdraid support changing RAID levels? I think it will even do it
reasonably safely (though still better not to have a power failure!). I
have a vague memory of adding a drive to a RAID5 and converting it to a
RAID6 but I could be misremembering.
--keith
--
kkeller@xxxxxxxxxxxxxxxxxxxxxxxxxx
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