[PROBLEM] xbiancopy fails after upgrading

[mk01]

@jyviko

if you get loop module loaded, that means space prealocation on created empty file is ok.

there are two options when looking at your new screen shot. the error is displaying block device /dev/mapper/p1. but it should have been /dev/mapper/loopXp1 (where X is 0-9). two reasons are coming to my mind:

1) bug of some kind causing not proper detection of used loop device - be sure you run last available xbian-package-config-shell which is 2.1.7-5 at STABLE repo.
2) cifs doesn't support all fs ioctl calls as required by loop and mapper modules.

for the 2) you could check manually like this:

Code:

sudo -i
touch /media/backup/TEST.img
truncate -s 5G /media/backup/TEST.img <<<< let's test the 4GB limit per file (if prealocation is fully supported this should take no longer than few seconds (1-10). after that, with ls -lah /media/backup/TEST.img should read file size of 5GB

modprobe loop
losetup -f      <<< will just show first free loop device to use remember the name

losetup /dev/loopX /media/backup/TEST.img     <<<< /dev/loopX is actual loop as returned by "losetup -f"

if still ok, create partitions on that loop device and try to format them :

Code:

losetup -d /dev/loopX
fdisk  /media/backup/TEST.img <<<<< do on your own, create any two partitions. save par table.


kpartx -av /media/backup/TEST.img    <<<< that actual command will reuse loopX again, but will map them through mapper to /dev/mapper/loopXp1 and p2.

mkfs.vfat /dev/mapper/loopXp1
mkfs.btrfs /dev/mapper/loopXp2