Hi all,
Ok, I need to get my head round RAID and LVM as I want to upgrade my
home server. At the moment, my disks are configured as per the top
part of this picture:-
http://stuphi.co.uk/disk_layout.jpg
I hope that makes sense. :-)
md0 is used for / and md1 for /home
As can be seen, if hdc dies, it should still work. If hda dies, it
will not boot.
What I want, from how I understand things, is represented by the
bottom part of that image. So all of hda and hdc become part of a
single RAID, and then LVM works on the resulting md0. Then I can
create partitions as required in the resulting vg. Does this sound
right?
I need to do this in a way that keeps my data. So I was going to
remove hdc from the original array, set that up as hda in the new
machine in a degraded array, with LVM etc. Once that is working, I was
going to then move the old hda to be the new hdc in the new machine,
boot with a rescue CD, and mount it as is so I can copy the data
across. Then I create the single partition, and add it to the array.
If I have gone way off track here, please let me know :-)
Thanks.
--
Philip Stubbs
%0A>%20%0A>%20md0%20is%20used%20for%20/%20and%20md1%20for%20/home%0A>%20%0A>%20As%20can%20be%20seen,%20if%20hdc%20dies,%20it%20should%20still%20work.%20If%20hda%20dies,%20it%0A>%20will%20not%20boot.%0A>%20%0A>%20What%20I%20want,%20from%20how%20I%20understand%20things,%20is%20represented%20by%20the%0A>%20bottom%20part%20of%20that%20image.%20So%20all%20of%20hda%20and%20hdc%20become%20part%20of%20a%0A>%20single%20RAID,%20and%20then%20LVM%20works%20on%20the%20resulting%20md0.%20Then%20I%20can%0A>%20create%20partitions%20as%20required%20in%20the%20resulting%20vg.%20Does%20this%20sound%0A>%20right?%0A>%20%0A>%20I%20need%20to%20do%20this%20in%20a%20way%20that%20keeps%20my%20data.%20So%20I%20was%20going%20to%0A>%20remove%20hdc%20from%20the%20original%20array,%20set%20that%20up%20as%20hda%20in%20the%20new%0A>%20machine%20in%20a%20degraded%20array,%20with%20LVM%20etc.%20Once%20that%20is%20working,%20I%20was%0A>%20going%20to%20then%20move%20the%20old%20hda%20to%20be%20the%20new%20hdc%20in%20the%20new%20machine,%0A>%20boot%20with%20a%20rescue%20CD,%20and%20mount%20it%20as%20is%20so%20I%20can%20copy%20the%20data%0A>%20across.%20Then%20I%20create%20the%20single%20partition,%20and%20add%20it%20to%20the%20array.%0A>%20%0A>%20If%20I%20have%20gone%20way%20off%20track%20here,%20please%20let%20me%20know%20:-)%0A>%20%0A>%20Thanks.%0A>%20%0A>%20--%20%0A>%20Philip%20Stubbs%0A>%20%0A>%20%0A>%20 "Reply to this message")
