On 07/22/2011 07:46 PM, David C. Rankin wrote:
Is there any shortcut to install Arch since I have the old install currently
running? Or is it just easier to stick the install CD in and go through the base
install on the new disks and then copy the old /var/cache/pacman/pkg to the new
arrays to complete the package install with local packages?
I'm fairly sure the dmraid designation with the old drive will take care of
itself when I do the install on the new array, but I'm not certain.
Lesson learned:
Warning: NEVER delete a partition in cfdisk to create 2 partitions with dmraid
after Manually configure block devices, filesystems and mountpoints have been
set. (really screws with dmraid metadata and existing partitions are worthless)
Solution: delete the array from the bios and re-create to force creation under a
new /dev/mapper ID, reinstall/repartition.
(added to:
https://wiki.archlinux.org/index.php/Installing_with_Fake_RAID#Mounting_the_filesystem)
[12:16 nirvana:/home/david] # df -h
Filesystem Size Used Avail Use% Mounted on
udev 10M 0 10M 0% /dev
run 10M 172K 9.9M 2% /run
/dev/mapper/nvidia_ddddhhfhp5 23G 13G 9.4G 57% /
shm 1.9G 0 1.9G 0% /dev/shm
/dev/mapper/nvidia_ddddhhfhp10 608G 380G 198G 66% /home
/dev/mapper/nvidia_ddddhhfhp7 122M 34M 82M 30% /boot
/dev/mapper/nvidia_ddddhhfhp8 23G 6.0G 16G 28% /var
/dev/mapper/nvidia_ddddhhfhp9 33G 8.1G 23G 27% /srv
/dev/mapper/nvidia_edfgdeacp5 28G 1.2G 25G 5% /mnt/nv2
/dev/mapper/nvidia_edfgdeacp7 183M 35M 139M 21% /mnt/nv2/boot
/dev/mapper/nvidia_edfgdeacp8 851G 200M 808G 1% /mnt/nv2/home
/dev/mapper/nvidia_edfgdeacp9 37G 176M 35G 1% /mnt/nv2/srv
New array is nvidia_edfgdeac under temp mount point of /mnt/nv2.
Is there any downside to just copying the system from old drive to new array
with (https://bbs.archlinux.org/viewtopic.php?id=77419):
1. Boot livecd
2. mount /dev/sda1 /mnt/old
3. mount /dev/sdb1 /mnt/new
4. cp -rav /mnt/old/* /mnt/new
5. umount /mnt/old
6. mount -o bind /dev /mnt/new/dev
7. mount -t proc none /mnt/new/proc
8. chroot /mnt/new /bin/bash
---1. grub-install /dev/sdb
---2. exit
9. Exit and reboot
Or is it better to just to selectively move data (i.e. mysqldump
--all-databases) and then read it back in? Does it matter? Obviously, it would
be cleaner just to reconfigure/reload all data to avoid copying stuff you don't
need, but from a time standpoint the copy method is very attractive. Anybody
have any thoughts either way?
--
David C. Rankin, J.D.,P.E.
