Hi, I would be pleased to get some help after I have looked and not
figured out how this should work:
Summary
=======
btrfs device add <LUKS encrypted container> <path>
Returns - Inappropriate ioctl for device
Details
=====
// I have an existing btrfs file system
// built from one ~650G partition in middle of 1TB GPT disk,
// luksFormat 'ed
// mkfs.btrfs 'ed
// mounted and used successfully with:
# a=451609d5-89f5-4826-9052-ca60897d493e &&
b=ec3fb67c-41c2-4920-b67c-3d3b6451a1ee && c=ec3 && d=/data/nrb/
// myMount (a=LUKS UUID, b=BTRFS UUID, c=mount directory, d=mount path)
# sudo cryptsetup luksOpen /dev/disk/by-uuid/"${a}" "${a}" && mkdir -p
"$d$c" && sudo mount -U "$b" "$d$c" ; sudo blkid | grep $a ; sudo
blkid | grep $b ; sudo btrfs fi df "$d$c"
/dev/sdX5: UUID="451609d5-89f5-4826-9052-ca60897d493e" TYPE="crypto_LUKS"
/dev/mapper/451609d5-89f5-4826-9052-ca60897d493e:
UUID="ec3fb67c-41c2-4920-b67c-3d3b6451a1ee"
UUID_SUB="99ca8ddf-39d5-4c0d-b967-62aa6e76769d" TYPE="btrfs"
// Then to add a new encrypted device
// built from one 400G
// luksFormat 'ed
// no file system
# a=1965f0dc-c4df-43ec-8c13-56aebec5d886 && c=ec3 && d=/data/nrb/
// (a=LUKS UUID, c=existing mounted BTRFS filesystem directory, d=mount path)
# sudo cryptsetup luksOpen /dev/disk/by-uuid/"${a}" "${a}"
# btrfs device add /dev/disk/by-uuid/"${a}" "$d$c"
ERROR: error adding the device
'/dev/disk/by-uuid/1965f0dc-c4df-43ec-8c13-56aebec5d886' -
Inappropriate ioctl for device
// similar errors after trying /dev/dm-7 and /dev/sda2
# btrfs --version
Btrfs Btrfs v0.19
# uname -a
Linux 874-deb 3.2.0-4-amd64 #1 SMP Debian 3.2.51-1 x86_64 GNU/Linux
BR/ Nigel
--
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
