devz...@web.de wrote: > hello, > > i have some difficulty in understanding multi-device handling in depth. > > as http://btrfs.wiki.kernel.org/index.php/Using_Btrfs_with_Multiple_Devices > tells, > > btrfs can span over multiple devices at the same time. (great feature, btw !) > > ok then: > > mkfs.btrfs -m single -d single /dev/sdb /dev/sdc - creates a btrfs spanning > over /dev/sdb and sdc > > mount /dev/sdb /btrfs - mounts it > > btrfs-vol -b /btrfs - does a rebalancing of all data and metadata > > btrfs-vol -r /dev/sdc - removes one of the volumes and redistributes any > extends in use on sdc to sdb (killer feature!!!) > > but what if i want to remove /dev/sdb ? (as that one is in use for the > mount) >
Devices in btrfs are equal, so you can do this. The only glitch is /proc/mounts and mount(8) get confused. Regards Yan Zheng -- 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
