> It is very difficult for me to find any good documentation on send & receive commands. Event the most recent btrfs progs man page (accessed from git today) says nothing. > > I want to migrate data (including numerous read only snaphots) from linux-raid - based storage into a native raid btrfs. > > I think that cloning via send & receive is a viable option. > > Can anyone help me please? I've posted my question also on stackexchange: http://unix.stackexchange.com/questions/63528/how-to-clone-btrfs-filesystem-into-different-medium-preserving-snapshots-sharin . I will post the answer there, so everyone can benefit from it. > > Thank you, > > Adam Ryczkowski > +48505919892 <callto:+48505919892> > Skype:sisteczko <skype:sisteczko> > > -- > To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > usage: btrfs send [-v] [-i <subvol>] [-p <parent>] [-f <outfile>] <subvol> Send the subvolume to stdout. Sends the subvolume specified by <subvol> to stdout. By default, this will send the whole subvolume. To do an incremental send, one or multiple '-i <clone_source>' arguments have to be specified. A 'clone source' is a subvolume that is known to exist on the receiving side in exactly the same state as on the sending side. Normally, a good snapshot parent is searched automatically in the list of 'clone sources'. To override this, use '-p <parent>' to manually specify a snapshot parent. A manually specified snapshot parent is also regarded as 'clone source'. -v Enable verbose debug output. Each occurrence of this option increases the verbose level more. -i <subvol> Informs btrfs send that this subvolume, can be taken as 'clone source'. This can be used for incremental sends. -p <subvol> Disable automatic snapshot parent determination and use <subvol> as parent. This subvolume is also added to the list of 'clone sources' (see -i). -f <outfile> Output is normally written to stdout. To write to a file, use this option. An alternative would be to use pipes. usage: btrfs receive [-v] [-f <infile>] <mount> Receive subvolumes from stdin. Receives one or more subvolumes that were previously sent with btrfs send. The received subvolumes are stored into <mount>. btrfs receive will fail in case a receiving subvolume already exists. It will also fail in case a previously received subvolume was changed after it was received. After receiving a subvolume, it is immediately set to read only. -v Enable verbose debug output. Each occurrence of this option increases the verbose level more. -f <infile> By default, btrfs receive uses stdin to receive the subvolumes. Use this option to specify a file to use instead. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
