Hi Lubos, On 01/23/2011 08:17 AM, Lubos Kolouch wrote: > Hello, > > During doing backups I found strange behaviour... 2.6.37, latest btrfs- > progs from git > > nbgentoo ~ # btrfs subv crea a > Create subvolume './a' > nbgentoo ~ # cd a > nbgentoo a # btrfs subv crea b > Create subvolume './b' > nbgentoo a # touch b/file > nbgentoo a # ls -l b/ > total 0 > -rw-r--r-- 1 root root 0 Jan 23 08:14 file > nbgentoo a # cd .. > nbgentoo ~ # btrfs subv snap a x > Create a snapshot of 'a' in './x' > nbgentoo ~ # ls -l x/b/ > total 0 > > and also > > nbgentoo ~ # cd x/ > nbgentoo x # btrfs subv dele b > ERROR: 'b' is not a subvolume > > Is this a bug or intended behaviour and I am missing something something? > How to snapshot a subvolume, containing another subvolumes?
It is the intended behavior. The snapshotting is not recursive about subvolumes. If you snapshot a subvolume which contains another one, you got only the content of the first subvolume. The directory "x/b" which you see, is not the subvolume "b" snapshotted, but only the "mount-point" of "b". > > (I create subvolume backup, under this another subvolumes as not always I > want to snapshot the whole backup subvolume). > > Thank you > > Lubos > > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majord...@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > . > -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
