Difference between revisions of "Talk:BTRFS Fun"
| Line 14: | Line 14: | ||
</pre> | </pre> | ||
| − | + | What are you trying to do with that ? Is this an example of installing a Funtoo box inside a subvolume ? | |
| + | |||
| + | If so, you don't need that : | ||
| + | <pre> | ||
| + | # fdisk /dev/sda2 | ||
| + | .... | ||
| + | # mkfs.btrfs /dev/sda2 | ||
| + | # mount /dev/sda2 /mnt/funtoo | ||
| + | # cd /mnt/funtoo | ||
| + | # btrfs subvolume create live-vfs-root-20110523 | ||
| + | # cd / && umount /mnt/funtoo && mount /dev/sda2 /mnt/funtoo -o subvol=live-vfs-root-20110523 | ||
| + | .... | ||
| + | # chroot /mnt/funtoo /bin/bash | ||
| + | </pre> | ||
And about this : | And about this : | ||
Revision as of 04:10, 26 May 2011
About this section :
Can I rewrite it, because it's clear that you don't understand what DestroyFx and I are trying to explain to you.
# fdisk /dev/sda2 .... # mkfs.btrfs /dev/sda2 # mount /dev/sda2 /mnt/funtoo # btrfs subvolume create /mnt/funtoo /mnt/funtoo/live-vfs-root-20110523 # chroot /mnt/funtoo/live-vfs-root-20110523 /bin/bash
What are you trying to do with that ? Is this an example of installing a Funtoo box inside a subvolume ?
If so, you don't need that :
# fdisk /dev/sda2 .... # mkfs.btrfs /dev/sda2 # mount /dev/sda2 /mnt/funtoo # cd /mnt/funtoo # btrfs subvolume create live-vfs-root-20110523 # cd / && umount /mnt/funtoo && mount /dev/sda2 /mnt/funtoo -o subvol=live-vfs-root-20110523 .... # chroot /mnt/funtoo /bin/bash
And about this :
Mount to the no named volume somewhere (e.g. mount -o subvolid=0 /dev/sdX /mnt)
Take a snapshot (remember to check its identification number) of your current subvolume and store it under the non named volume you just have just mounted (btrfs snapshot create / /mnt/before-updating-20110524) -- (Where is the "frontier"? If 0 is monted does its contennts also appear in the taken snashot located on the same volume?)
I'm gonna explain it in my own words.
If you mount -o subvolid=0 /dev/sdx /mnt
When you enter /mnt, you will be able to snapshot whatever subvolume that you want.
So, if you have this :
@subvolid=0 subvolume home subvolume root a snapshot
If you run this : btrfs subvolume snapshot / test, you will end with :
subvolume home subvolume root a snapshot test
Test will contains the data from all the subvolume under the subvolid=0.
But if you run this and you didn't run the first snapshot command :
btrfs subvolume snapshot home test_test, you will end with :
@subvolid=0 subvolume home subvolume root a snapshot test_test
test_test will contains only the data from home.
When you mount the subvolid=0, you should never use the / to snapshot, but you should use a specific subvolume instead. That's a BTRFS feature, it's like Logicial Partition inside the Virtual Group stuff if you refer to LVM.
I can even post my suggestion here and you will be free to include them or not inside the page.
