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Now remove the CD and reboot into SME 8 :
Now remove the CD and reboot into SME 8 :
mdadm -AR /dev/md5 /dev/hdx2
mdadm -AR /dev/md5 /dev/hdx2 (n.b. you may find that /dev/md5 already exists)
vgscan
vgscan
vgchange -a y new_vg_name
vgchange -a y new_vg_name
db configuration setprop backup Program CopyFromDisk status enabled
db configuration setprop backup Program CopyFromDisk status enabled
signal-event pre-restore
signal-event pre-restore
signal-event restore-tape /mnt/old (note: this step may take a long time depending on how much data is being restored
signal-event restore-tape /mnt/tmp (note: this step may take a long time depending on how much data is being restored
signal-event post-upgrade
signal-event post-upgrade
signal-event reboot
signal-event reboot
All the usual warnings apply. Remember that any old contribs & templates will have to be reinstalled (assuming that they will work with V8)
All the usual warnings apply. Remember that any old contribs & templates will have to be reinstalled (assuming that they will work with V8)
== Using a third drive ==
I have just repeated the exercise and it seems to work OK. It was much easier having a third drive. Mark the drives so you know what each contains ! I will refer to them as A, B & C - substitute the relevant drive paths accordingly.
I did the following :
Added the third drive (C) as a hot spare - see : http://wiki.contribs.org/Raid#Adding_another_Hard_Drive_Later
Stop the machine, remove one drive (B) and restart - this makes the array 'fail' and the hot spare will be added to the array and mirrored. Run the pre-backup for (A) & (C). Stop the machine.
Remove the SME7 drives (A) & (C). Install SM8 on the first pulled drive (B) and apply any updates.
Stop the machine. Pull the original disk (A) and store it out of the way - you can always get yourself back with this drive. It is better to save (A) as (C) may not have a boot partition correctly installed - see the notes on adding a hot spare : http://forums.contribs.org/index.php/topic,38041.msg171631.html#msg171631
Reboot with an SME7 CD (see above for details) and the 'new' drive (C) and rename the LVM on it as detailed above
Stop the machine. Plug in the disk with SME8 (B) and the disk with SME7 (C). Boot from the SME8 disk (B). Mount the LVM on the SME7 disk (C) as above and restore from disk (C).
Check that the data has copied over OK, format disk (C) to wipe the old system and then add it to the SME 8 Array.
Finally once you are happy everything is working add back Disk (A)
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[[Category:Howto]]
[[Category:Howto]]
[[Category:Administration:Storage]]
[[Category:Administration:Storage]]
