M at 17:19, 24 March 2016

2016-03-24T17:19:06Z

← Older revision		Revision as of 17:19, 24 March 2016
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	'''Back up a linux system to a second bootable drive'''		'''Back up a linux system to a second bootable drive'''

	Steps:		Steps:
	# We want to copy all files from the root drive to a new drive.		# We want to copy all files from the root drive to a new drive.

M at 17:18, 24 March 2016

2016-03-24T17:18:54Z

← Older revision		Revision as of 17:18, 24 March 2016
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	== Back up a linux system to a second bootable drive ==		'''Back up a linux system to a second bootable drive'''
	Steps:		Steps:
	# We want to copy all files from the root drive to a new drive.		# We want to copy all files from the root drive to a new drive.

M: Created page with "== Back up a linux system to a second bootable drive == Steps: # We want to copy all files from the root drive to a new drive. # We also want to update the boot menu to boot..."

2016-03-24T17:18:25Z

Created page with "== Back up a linux system to a second bootable drive == Steps: # We want to copy all files from the root drive to a new drive. # We also want to update the boot menu to boot..."

New page

== Back up a linux system to a second bootable drive ==
Steps:
# We want to copy all files from the root drive to a new drive.
# We also want to update the boot menu to boot off the new drive.
# We also want to change /etc/fstab on the second drive to use the new root path.

These are the steps for backup of the dune box to the /spiceflow/2.0tb-newmovies/ drive.
When we're done, we'll boot from that drive to prove we have a working standby system.

rsync does an excellent job of copying just what we need. Test it with this:
# a (archive mode -rlptgoD) v (verbose) x (don't cross filesystems) h (human-readable) n (dry run)
rsync -avxhn --progress / /spiceflow/2.0tb-newmovies/
Do the job with this:
rsync -avxh / /spiceflow/2.0tb-newmovies/

sent 28.10G bytes received 8.64M bytes 15.63M bytes/sec
total size is 39.57G speedup is 1.41
There was def some old stuff in there worth cleaning up:
/home/m/development/svn/mythtv...
/var/tmp
xbmc log files
etc
Next we fix /etc/fstab on the new drive to use the drive as root. Original config:
/dev/disk/by-label/d-g2-root / ext3 noatime 0 1
/dev/disk/by-label/d-sp-20newmovies /spiceflow/2.0tb-newmovies ext4 noatime 0 2
New config (remember tho, we lose the 2gb drive):
/dev/disk/by-label/d-g2-root /root-hot-drive ext3 noatime 0 1
/dev/disk/by-label/d-sp-20newmovies / ext4 noatime 0 2
Note: this never worked out for me due to my system's mix of ext3 and ext4.
I'll retry once I migrate everything to ext4.
Next, grub:
mount /boot
em /boot/grub/menu.lst
Orig entry:
title ----- linux-2.6.34-gentoo-r11_withext4
root (hd0,0)
kernel /boot/linux-2.6.34-gentoo-r11_withext4 root=/dev/sda4
Add a new "standby" entry under it - do a "df" to find the root:
title ----- ==STANDBY== linux-2.6.34-gentoo-r11_withext4
root (hd0,0)
kernel /boot/linux-2.6.34-gentoo-r11_withext4 root=/dev/hda1
Then reboot to standby and see what we have... (no "latest" video library etc., but otherwise the same?)

Back up drive - Revision history

M at 17:19, 24 March 2016

M at 17:18, 24 March 2016

M: Created page with "== Back up a linux system to a second bootable drive == Steps: # We want to copy all files from the root drive to a new drive. # We also want to update the boot menu to boot..."