I can send snapshots to <volume>, but not <volume>/<dir>. Please advise
if what I am doing is incorrect.
Rory
Format usb3 disk and mount
root@orchard:/bkp# mkfs.btrfs /dev/sdb1
> WARNING! - Btrfs v0.20-rc1-37-g91d9eec IS EXPERIMENTAL
> WARNING! - see http://btrfs.wiki.kernel.org before using
> fs created label (null) on /dev/sdb1
> nodesize 4096 leafsize 4096 sectorsize 4096 size 698.64GB
> Btrfs v0.20-rc1-37-g91d9eec
mount /dev/sdb1 /mnt
Create snapshots on /bkp share
root@orchard:/bkp# btrfs subvolume snapshot -r subvol
snaps/snap_081012_1715
> Create a readonly snapshot of 'subvol' in 'snaps/snap_081012_1715'
root@orchard:/bkp# mutt -f subvol/INBOX/
> 1561 kept, 18 deleted.
root@orchard:/bkp# btrfs subvolume snapshot -r subvol
snaps/snap_081012_1716
> Create a readonly snapshot of 'subvol' in 'snaps/snap_081012_1716'
Send base backup to /mnt
root@orchard:/bkp# btrfs send snaps/snap_081012_1715 | btrfs receive
/mnt
> At subvol snaps/snap_081012_1715
> At subvol snap_081012_1715
Send incremental backup to /mnt
root@orchard:/bkp# btrfs send -p snaps/snap_081012_1715 \
snaps/snap_081012_1716 | btrfs receive /mnt
> At subvol snaps/snap_081012_1716
> At snapshot snap_081012_1716
root@orchard:/bkp# ls /mnt
snap_081012_1715 snap_081012_1716
Results:
root@orchard:/bkp# btrfs subvolume list /bkp
> ID 259 gen 62 top level 5 path subvol
> ID 278 gen 60 top level 5 path snaps/snap_081012_1715
> ID 279 gen 62 top level 5 path snaps/snap_081012_1716
root@orchard:/bkp# btrfs subvolume list /mnt
> ID 256 gen 8 top level 5 path snap_081012_1715
> ID 259 gen 9 top level 5 path snap_081012_1716
Restart:
root@orchard:/bkp# btrfs subvolume del /mnt/snap_081012_171*
> Delete subvolume '/mnt/snap_081012_1715'
> Delete subvolume '/mnt/snap_081012_1716'
Try and snap to /mnt/<subdir>
root@orchard:/bkp# mkdir /mnt/snaps
root@orchard:/bkp# btrfs send snaps/snap_081012_1715 | btrfs receive
/mnt/snaps
> At subvol snaps/snap_081012_1715
> At subvol snap_081012_1715
root@orchard:/bkp# btrfs send -p snaps/snap_081012_1715 \
snaps/snap_081012_1716 | btrfs receive /mnt/snaps
> At subvol snaps/snap_081012_1716
> At snapshot snap_081012_1716
> ERROR: open snaps/snap_081012_1715 failed. No such file or directory
root@orchard:/bkp# ls /mnt/snaps
> snap_081012_1715
--
Rory Campbell-Lange
r...@campbell-lange.net
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