Juan Orti Alcaine wrote: > 2014/1/16 Neal Becker <ndbecker2@xxxxxxxxx>: >> Trying to follow the example in this article: >> >> http://arstechnica.com/information-technology/2014/01/bitrot-and-atomic-cows-inside-next-gen-filesystems/3/ >> >> [root@nbecker1 nbecker]# btrfs subvolume list / >> ID 256 gen 563294 top level 5 path home >> ID 258 gen 563294 top level 5 path root >> ID 370 gen 563278 top level 5 path home/.snapshots >> ID 371 gen 563279 top level 5 path home/.snapshots/01162014 >> >> [root@nbecker1 nbecker]# btrfs send /home/.snapshots/01162014 > /dev/null >> At subvol /home/.snapshots/01162014 >> ERROR: open home/.snapshots/01162014 failed. No such file or directory >> >> OK, I have no clue why this doesn't work. >> > > > I'm not sure about the snapshots-inside-a-subvolume thing. I have the > root (subvolid=0) mounted in /mnt/btrfs and take there the snapshots, > so they are not nested: > > # btrfs sub list /mnt/btrfs > ID 284 gen 15086 top level 5 path root > ID 1032 gen 12751 top level 5 path root@2014-01-14_23:45:01 > ID 1033 gen 12777 top level 5 path root@2014-01-15_07:45:01 > ID 1034 gen 12794 top level 5 path root@2014-01-15_08:00:01 > ID 1035 gen 12811 top level 5 path root@2014-01-15_08:15:01 > ID 1036 gen 12829 top level 5 path root@2014-01-15_08:30:01 > ID 1037 gen 12844 top level 5 path root@2014-01-15_08:45:01 > ID 1038 gen 12863 top level 5 path root@2014-01-15_09:00:01 > ID 1039 gen 12880 top level 5 path root@2014-01-15_09:15:01 > > Also, to send a subvolume, it must be read-only: > > # btrfs sub snapshot -r / /mnt/btrfs/my-ro-root > # btrfs send /mnt/btrfs/my-ro-root > > You can later make a read-write snapshot of a read-only one to work with it. > OK, I used a path /.snapshots: btrfs subvolume list / ID 256 gen 563396 top level 5 path home ID 258 gen 563396 top level 5 path root ID 372 gen 563396 top level 258 path .snapshots [root@nbecker1 nbecker]# btrfs sub snapshot -r /home /.snapshots Create a readonly snapshot of '/home' in '/.snapshots/home' [root@nbecker1 nbecker]# btrfs subvolume list / ID 256 gen 563398 top level 5 path home ID 258 gen 563398 top level 5 path root ID 372 gen 563398 top level 258 path .snapshots ID 373 gen 563398 top level 258 path .snapshots/home [root@nbecker1 nbecker]# btrfs send /.snapshots/home > /dev/null At subvol /.snapshots/home ERROR: open root/.snapshots/home failed. No such file or directory -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
