Hi,
By the mdstat shown below, you have a 3 drive raid-5 device with one spare. The
[0], [1] and [2] indicate the raid role for the associated disks. Values of [3]
or higher are the spare (for a three disk array.) In general, in an 'n' disk
raid array, [0]..[n-1] are the disks that are in the arr
I recently inquired about adding a spare-disk to an operating RAID-5 array,
and was given the advice to use raidhotadd. I've tried this and want to make
sure that the result is the one I should expect. I thought that spare disks
would show up as an "unused device" in /proc/mdstat, but that may not
>
> > No-one swaps to md devices, except raid-1 and that only, if one really,
> > really needs it. It's just too slow.
>
> Is it really that slow? The md-devices are faster than a regular disk (I
use
> RAID 5).
> faster than a single disk: yes.
> faster than normal swapping: no.
> Normally, if
On Fri, Dec 24, 1999 at 09:14:14AM +0100, [EMAIL PROTECTED] wrote:
>
> Hallo.
>
[...]
> With 2.2.12 and 2.2.13 I get kernel panics after some time. Seems to be
> something with swapping to disk (occurs when swap is being used an panic
> is "in swapper task").
> 2.3.34 cannot be used because I ca
Johan Ekenberg wrote:
>
> > No-one swaps to md devices, except raid-1 and that only, if one really,
> > really needs it. It's just too slow.
>
> Is it really that slow? The md-devices are faster than a regular disk (I use
> RAID 5).
faster than a single disk: yes.
faster than normal swapping:
>Power down the system
>Replace the failed disk
>Power up the system once again.
>Use raidhotadd /dev/mdX /dev/sdX to re-insert the disk in the array
>Have coffee while you watch the automatic reconstruction running
All works a treat for me with a four disk Raid5 setup. I'm st
