Hallo, Chris, Du meintest am 03.01.13:
>>> MBR has no mechanism for labeling the disk itself or the >>> partitions. So /dev/sda cannot have a label or a name. >> Sure? > Yes. MBR itself has no place holder to encode a disk name or > partition name. http://en.wikipedia.org/wiki/Master_boot_record I've just played a bit ... btrfs-show tells ** ** WARNING: this program is considered deprecated ** Please consider to switch to the btrfs utility ** Label: USBmm uuid: 43ad1782-5d1c-4211-9333-506bcfdbc3a5 Total devices 1 FS bytes used 28.00KB devid 1 size 3.78GB used 423.50MB path /dev/sdb Label: mylabel uuid: e9716633-49f1-44a0-a3b4-90ba9736a540 Total devices 3 FS bytes used 28.00KB devid 2 size 1.00GB used 110.38MB path /dev/sdb2 devid 1 size 1.00GB used 275.94MB path /dev/sdb1 devid 3 size 1.00GB used 263.94MB path /dev/sdb3 Btrfs Btrfs v0.19 # ---------------------------------------- The "USBmm" entry remains from mkfs.btrfs -d raid0 -m raid1 -L USBmm /dev/sdb Then I run "fdisk /dev/sdb" and created 4 partitions on "/dev/sdb" without previous overwriting it with zeros. And then mkfs.btrfs -d raid0 -m raid1 -L mylabel /dev/sdb1 /dev/sdb2 /dev/sdb3 Inspecting the first sectors of "/dev/sdb" shows the string "USBmm" at the beginning of the second 64-kByte block (0x10120 ... 0x1012f). The "mylabel" entries are somewhere after the first 128 kByte. Viele Gruesse! Helmut -- 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