Alexander Skwar <alexanders.mailinglists+nos...@gmail.com> schrieb: > Where I'm hanging right now, is that I can't seem to figure out a > "bullet proof" way to find all the subvolumes of the filesystems I > might have.
What about this: # btrfs sub list -a / ID 256 gen 1487089 top level 5 path <FS_TREE>/root64 ID 258 gen 1487089 top level 5 path <FS_TREE>/home ID 259 gen 1486932 top level 5 path <FS_TREE>/usr-src ID 260 gen 1486885 top level 5 path <FS_TREE>/usr-portage ID 261 gen 1487089 top level 5 path <FS_TREE>/var-tmp You still need to iterate through the mounted btrfs filesystems if you are using more than one: # btrfs fi show | fgrep uuid Label: 'usb-backup' uuid: 7038c8fa-4293-49e9-b493-a9c46e5663ca Label: 'system' uuid: d2bb232a-2e8f-4951-8bcc-97e237f1b536 Then translate the uuid back to an fspath somehow. Another option would be to use blkid: # blkid -t TYPE=btrfs /dev/sda3: LABEL="system" UUID="d2bb232a-2e8f-4951-8bcc-97e237f1b536" UUID_SUB="7e0a2d93-86cc-4421-9e2c-b5c405075ff3" TYPE="btrfs" PARTLABEL="Linux filesystem" PARTUUID="7807f64f-3d0b-4e99-81a4-975128ed2918" /dev/sdb3: LABEL="system" UUID="d2bb232a-2e8f-4951-8bcc-97e237f1b536" UUID_SUB="caa3a27b-8546-4519-9a13-8f50cd1caf70" TYPE="btrfs" PARTLABEL="Linux filesystem" PARTUUID="1330dcf5-f1d3-462b-af08-e7cad839b3dc" /dev/sdc3: LABEL="system" UUID="d2bb232a-2e8f-4951-8bcc-97e237f1b536" UUID_SUB="e919b066-db86-4818-975c-bae0548c822a" TYPE="btrfs" PARTLABEL="Linux filesystem" PARTUUID="847fd503-8dca-4c6b-b199-20a47d62aa55" /dev/sdd1: LABEL="usb-backup" UUID="7038c8fa-4293-49e9-b493-a9c46e5663ca" UUID_SUB="f2eac9b0-22e3-44a2-bdc5-c98ee86da71f" TYPE="btrfs" PARTLABEL="Linux filesystem" PARTUUID="275ba328-9d5a-494b-bf19-a995596a4b6b" Still needs translation back to fspathes. But that could be done with grep/head/lsblk trickery... HTH, Kai -- 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
