btrbk fails on empty target subvolume about btrbk HOT 8 CLOSED

Is /media/Storage3/@HomeSnaps already present on your filesystem? Note that btrbk does not create the backup target subvolume (as well as the snapshot directory specified by snapshot_dir).
If it is not, run btrfs subvolume create /media/Storage3/@HomeSnaps prior to running btrbk.

If it is already present, you might have found a bug. Could you please re-run btrbk with debug output enabled:

btrbk -l debug -c /etc/btrbk/btrbk.conf.example dryrun > /tmp/btrbk_debug.log

from btrbk.

haha i was already running with debug on when you posted your reply. Here is the output:

btrbk -c /etc/btrbk/btrbk.conf.example -l debug dryrun
btrbk command line client, version 0.13 (Fri Mar 20 12:53:54 2015)
config: parsing file: /etc/btrbk/btrbk.conf.example
config: adding option "snapshot_dir=@Backups/" to root context
config: adding option "snapshot_create_always=yes" to root context
config: adding option "incremental=no" to root context
config: adding option "preserve_day_of_week=sunday" to root context
config: adding option "snapshot_preserve_daily=all" to root context
config: adding option "snapshot_preserve_weekly=4" to root context
config: adding option "snapshot_preserve_monthly=1" to root context
config: adding option "target_preserve_daily=all" to root context
config: adding option "target_preserve_weekly=4" to root context
config: adding option "target_preserve_monthly=1" to root context
config: adding option "btrfs_commit_delete=after" to root context
config: adding option "receive_log=no" to root context
config: context forced to: root
config: adding volume "/mnt/btrfsroot" to root context
config: adding subvolume "@Home" to volume context: /mnt/btrfsroot
config: adding target "/media/Storage3/@HomeSnaps" (type=send-receive) to subvolume context: /mnt/btrfsroot/@Home

/sbin/btrfs subvolume show /mnt/btrfsroot 2>/dev/null

Command execution successful
found btrfs root: /mnt/btrfsroot

/sbin/btrfs subvolume list -a -c -u -q -R /mnt/btrfsroot

Command execution successful
parsed 3 total subvolumes for filesystem at: /mnt/btrfsroot

/sbin/btrfs subvolume show /media/Storage3/@HomeSnaps 2>/dev/null

Command execution successful
parsed 10 subvolume detail items: /media/Storage3/@HomeSnaps

/sbin/btrfs subvolume list -a -c -u -q -R /media/Storage3/@HomeSnaps

Command execution successful
parsed 1 total subvolumes for filesystem at: /media/Storage3/@HomeSnaps
No subvolumes found in: /media/Storage3/@HomeSnaps
WARNING: Skipping target: Failed to read btrfs subvolume list for "/media/Storage3/@HomeSnaps"
Creating subvolume snapshot for: /mnt/btrfsroot/@Home
[btrfs] snapshot (ro):
[btrfs] source: /mnt/btrfsroot/@Home
[btrfs] target: /mnt/btrfsroot/@Backups/@Home.20150320

/mnt/btrfsroot/@Backups/@Home.20150320

(dryrun) /sbin/btrfs subvolume snapshot -r /mnt/btrfsroot/@Home /mnt/btrfsroot/@Backups/@Home.20150320

WARNING: Skipping cleanup of snapshots for subvolume "/mnt/btrfsroot/@Home", as at least one target aborted earlier

Completed within: 0s (Fri Mar 20 12:53:54 2015)

Backup Summary (btrbk command line client, version 0.13)

Date:   Fri Mar 20 12:53:54 2015
Config: /etc/btrbk/btrbk.conf.example

/mnt/btrfsroot/@Home
+++ /mnt/btrfsroot/@Backups/@Home.20150320
!!! Target "/media/Storage3/@HomeSnaps" aborted: Failed to read btrfs subvolume list for "/media/Storage3/@HomeSnaps"

NOTE: Some errors occurred, which may result in missing backups!
Please check warning and error messages above.

NOTE: Dryrun was active, none of the operations above were actually executed!

And the output of the command that executes just before the failure in case it is to blame...
http://pastebin.com/GW6taHKh

Had to put it in pasetbin since git was removing part of the output...

from btrbk.

Thanks, I identified a bug introduced in commit: 14e675b

btrbk now has problems with empty backup subvolumes. As a workaround, simply create a dummy subvolume:

btrfs subvolume create /media/Storage3/@HomeSnaps/dummy

...while I'm fixing...

from btrbk.

great thank you

from btrbk.

fixed in d17d0ab

from btrbk.

fixed in btrbk v0.14

from btrbk.

Thank you for moving so quick on this.

from btrbk.

It's always nice to see that other people are also using btrbk. I hope it turns out to be useful for you as it is for me! Don't hesitate to create feature requests or ask for help, every feedback helps me improving this project.
Also don't forget to "star" this project if you like it, so that other people can find it more easily.

from btrbk.