exfat filesystem support

[tmzullinger]

Hi,

I was backing up a new external disk prior to formatting and ran into an error while running fsarchiver -x savefs. The disk is formatted as exfat which is not (yet) supported.

To help anyone searching, the error when the disk is unmounted:

$ sudo fsarchiver -x savefs /path/to/backup.fsa /dev/sdi2
filesys.c#318,generic_mount(): partition [/dev/sdi2] cannot be mounted on [/tmp/fsa/20231216-140422-0001bed3-00] as [vfat] with options []
oper_save.c#1037,filesystem_mount_partition(): cannot mount partition [/dev/sdi2]: filesystem may not be supported by either fsarchiver or the kernel.
removed /path/to/backup.fsa

or mounted:

$ sudo fsarchiver -x savefs /path/to/backup.fsa /dev/sdi2
oper_save.c#951,filesystem_mount_partition(): filesystem of partition [/dev/sdi2] is not supported by fsarchiver: filesystem=[exfat]
removed /path/to/backup.fsa

Perhaps someone will be bored and add exfat support. Thanks in advance! :)