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On 09/30/2013 06:22 AM, Neil Bothwick wrote: |
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> On Mon, 30 Sep 2013 12:01:27 +0200, Hinnerk van Bruinehsen wrote: |
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> |
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>>> mount /usr -o remount,ro mkdir /newusr rsync -a /usr/ /new/usr/ Comment out /usr line in |
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>>> /etc/fstab mv /usr /oldusr mv /newusr /usr reboot rmdir /oldusr |
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>>> |
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>>> What you do with the old partition is up to you. In this case the discussion was about /usr |
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>>> on LVM, so you just delete it and allocate the space elsewhere when needed. |
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> |
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>> You can even leave out the step of creating a new directory and moving it later if you |
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>> bind-mount you rootfs somewhere, e.g. /mnt/gentoo. |
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> |
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> Good point. |
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> |
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>> You may want to add some parameters to the call to rsync, though (e.g. those that preserve |
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>> permissions, xattrs (especially for SELinux or XT-PaX) and owner/group (should be -pogX), |
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> |
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> -a covers most if not all of those. |
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> |
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>> possibly -x aswell (if you have other filesystems under /usr (e.g. a discrete FS for the |
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>> portage tree). |
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> |
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> Another good point, one of those things you think of immediately after hitting Send :( |
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> |
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> |
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Specifically, I would use -axAHX (-rlptgoD are implied by -a, but -HAX are not). |
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|
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- From rsync(1): |
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|
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- -a archive mode; equals -rlptgoD (no -H,-A,-X) |
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- -r recurse into directories |
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- -l copy symlinks as symlinks |
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- -p preserve permissions |
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- -t preserve modification times |
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- -g preserve group |
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- -o preserve owner |
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- -D preserve device files and special files |
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- -H preserve hard links |
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- -A preserve ACLs (implies -p) |
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- -X preserve extended attributes |
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- -x don't cross filesystem boundaries |
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|
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- -- |
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Jonathan Callen |
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