mark delfman <markdelfman@xxxxxxxxxxxxxx> writes:
> Hi.... I am hopeful that the group could provide me with some advice
> regarding limiting the drive size on a RAID0. I know and use the â??z
> option for other raid levels, but this seems to have no effect on
> RAID0.
>
> I am sure many will ask â??why botherâ?? or â??use fdiskâ?? but the problem is:
>
> We need to have some preserved information on each drive â?? can be only
> a few MB at the end of the drive for example
> In the past we have simply used Fdisk to partition, save our data on
> Sdx2 and used Mdadm on Sdx1 (which works fine)
> But we are looking to move to dual channel SAS drives and use DM MPIO
>
> DM MPIO works fine also, but not on the partitions, only the whole
> drive. So when we MDadm DMx it overwrites the SdX2 partition etc.
>
> The answer was that we used the â??z and limited the drive size and
> simply used DD to write our data to the end LBAâ??s....
>
> But on RAID0 the â??z does not seem to function, so I cant think of a
> way around this ï?? (other than changing the LBA range in the drive and
> this is restricted I think)
>
>
> Does anyone have any ideas? I appreciate any help
LVM and --setphysicalvolumesize on pvcreate?
MfG
Goswin
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