hi ya jason...
i just added a drive into my (sw) raid5 array w/o any problems
on a raid patched system ( 2.2.18-chds )
raidhotadd /dev/md0 /dev/sdxx1
- i dont know what happens if the primary goes down and
you start running on the mirror'd disk -- replace the
failed primary and than try to resync...
thanx
alvin
http://www.Linux-1U.net ... 1U Raid5 -- 500Gb NAS ...
On Mon, 16 Apr 2001, Jason A. Lixfeld wrote:
> List,
>
> Currently I have 3 x Maxtor 81GB 5400RPM ATA100 drives and 3 x Maxtor 60GB
> 5400RPM ATA100 drives running off of two Promise PDC20267 cards. The disks
> are all in one LV using LVM with ReiserFS. We're having this unique problem
> where now if data is written to the LV, the cpu shoots up to 100% so we're
> thinking there is a bad drive somewhere although all diagnostic information
> is clean making the search extreamly difficult. Anyway, we're looking for a
> RAID solution that will allow us to add disks on the fly without recreating
> the entire raid. To my knowledge Linux RAID0 can't do it because of the
> striping and Linux RAID5 still can't do it, but my information may be
> incorrect. Can anyone lay down the facts for me?
>
> If infact Linux RAID0 || 5 can't have drives added on the fly, I'm looking
> at hardware RAID, possibly by using 3Ware cards. One of my questions about
> 3Ware cards is if it's possible to have 2+ cards full of devices and have
> them all in one single RAID as opposed to having multiple raids. If 3Ware
> can't do it, can promise do it with 2+ of their RAID controllers? How is
> the support for both with linux?
>
> Any help is appreciated.
>
> TiA
>
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