On Jan 3, 2013, at 12:18 PM, Chris Murphy <li...@colorremedies.com> wrote: > > On Jan 3, 2013, at 12:08 PM, hul...@t-online.de (Helmut Hullen) wrote: > >> Labelling via "btrfs filesystem label <device> <label>" works well. > > It's a bug. I'm able to reproduce it as well. The command language itself > indicates its the fs that's to be labeled. "device" in this case maps a > /dev/X device to a fs UUID. It always should apply to the file system. If you > want to name your partitions, use GPT.
OK on a Fedora 18 test system with kernel 3.6.11-3 and btrfs-progs-0.20.rc1.20121017git91d9eec-1.fc18.x86_64 I'm getting different results. File system is never mounted for this test. # mkfs.btrfs -L test /dev/sd[bc] # btrfs fi label /dev/sdb test # btrfs fi label /dev/sdc test # btrfs fi label /dev/sdc test2 # btrfs fi label /dev/sdc test2 # btrfs fi label /dev/sdb test2 So 'btrfs fi label' relabeling with an unmounted system changes the file system label metadata on all member devices, according to btrfs fi label. Now when I use file: # file -s /dev/sdb /dev/sdb: BTRFS Filesystem (label "test2", sectorsize 4096, nodesize 4096, leafsize 4096) # file -s /dev/sdc /dev/sdc: BTRFS Filesystem (label "test2", sectorsize 4096, nodesize 4096, leafsize 4096) Again it correctly reports the label, even though I had only changed the label on sdc (which actually is improper language, I changed the label on the file system implied by device sdc which also extends to device sdb). And then for blkid: # blkid /dev/sdb: LABEL="test2" UUID="3d5390d0-a41b-4f70-a4e5-b47295d3c717" UUID_SUB="a5bbaa83-6d6f-45dc-9804-9442350c3bc9" TYPE="btrfs" /dev/sdc: LABEL="test2" UUID="3d5390d0-a41b-4f70-a4e5-b47295d3c717" UUID_SUB="01e0bc77-cfdf-4bd7-bfd3-05e14affa66a" TYPE="btrfs" So again, the correct filesystem label is returned, for this unmounted file system. Chris Murphy -- 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
