On Thu, 2005-07-28 at 00:24 +0800, Feizhou wrote:
> >>>>I have a question for you. I want to use iscsi array
> >>>>to store database data file. I hope I can get some
> >>>>kind of redundency (RAID) as well as dynamic increase
> >>>>disk space without shuting down the database to
> >>>>rebuild the array. The database will have transactions
> >>>>all the time and can't be shutdown.
> >>>>
> >>>>
> >
> >i am thinking if possible to have
> >mysql + xfs + open-iscsi + iet + lvm + md. so if need larger size, just
> >add another software raid to vg and then do lvextend, then do rescan on
> >iet (need develop), then do a xfs online resize?
> >
> >
>
> xfs the fs? Ugh. ext3 with data=journal would be better in case of a
> crash or what ever.
can ext3 do online resize? i am not sure.
>
> unless you have free hotswap SCSI bays available, adding another
> software raid will have to mean another box with iet.
but raid5 can not dynamic add disk and expand size right?
>
> At same blinking time, lvm does not tolerate losing physical volumes so
> if a iet box goes down....
iet is on top of lv, so even iet box crash, hopefully lvm is still
there.
>
> very murky this one
:P any suggestion?
ming
-------------------------------------------------------
SF.Net email is sponsored by: Discover Easy Linux Migration Strategies
from IBM. Find simple to follow Roadmaps, straightforward articles,
informative Webcasts and more! Get everything you need to get up to
speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click
|
