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libertytrek Apprentice
Joined: 18 Jul 2007 Posts: 258
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Posted: Sun Dec 08, 2013 7:37 pm Post subject: Merging LVM /usr back into / - don't want an initramfs |
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Hello all,
This is probably really basic stuff for most of you, but I was more than a little nervous about doing this on a live server.
That said, it was pretty much the most anti-climactic thing I've ever done on a server...
After much googling and reading and bugging people on both the gentoo user and rsync lists, I finally took the plunge, and it took all of about 6 minutes, the longest part being the rsync of /usr...
Ok, here are the steps that I took to merge my /usr (which was on a separate LVM partition) back into /...
1. cd /
2. mkdir tmp-usr
3. rsync -avHP --numeric-ids /usr/ /tmp-usr/
4. Reboot into single user mode
5. cd /
5. ls -al /usr and confirm it is empty (since it isn't mounted) - I like to be sure/safe
6. mv usr OLD-usr (I mounted the old LVM usr partition to OLD-usr)
7. mv tmp-usr usr
8. edit /etc/fstab, comment out the /usr line:
#/dev/vg/usr /usr reiserfs noatime 0 0
9. reboot
It was that simple...
Thanks to all who patiently answered my questions while I was prepping myself for this... |
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frostschutz Advocate
Joined: 22 Feb 2005 Posts: 2977 Location: Germany
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Posted: Sun Dec 08, 2013 9:57 pm Post subject: |
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You need a huuuge / partition for this. Usually when you start out with separate partitions for everything, / is not large enough to hold /usr.
I merged it in the other direction (/ to /usr instead of /usr to /) for that reason; of course it wouldn't have solved your problem then as with / on LVM you still need initramfs. |
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libertytrek Apprentice
Joined: 18 Jul 2007 Posts: 258
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Posted: Sun Dec 08, 2013 10:26 pm Post subject: |
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frostschutz wrote: | You need a huuuge / partition for this. Usually when you start out with separate partitions for everything, / is not large enough to hold /usr. |
Depends on what you mean by 'huge'...
My / is 20GB, my /usr was 3.3GB (after eliminating unnecessary old kernels and moving /usr/portage)...
So, plenty of room. |
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