[bug#41143] [PATCH 1/2] mapped-devices: Allow target to be list of strings

[Lars-Dominik Braun]

Hi,

I’ve tried the patches, but `guix system reconfigure` fails(?) with

        building 
/gnu/store/cy6d2a4b8bcqcjiaz8bm367j7vbdrslc-upgrade-shepherd-services.scm.drv...
        guix system: error: exception caught while executing 'start' on service 
'device-mapping-disk3-data':
        error: <>: unbound variable

Relevant part of my config.scm:

          (mapped-devices
                  (list (mapped-device
                                  (source "disk3")
                                  (target "disk3-data")
                                  (type lvm-device-mapping))))
          (file-systems (append
                                         (list …
                                                        (file-system
                                                         (device 
"/dev/mapper/disk3-data")
                                                         (mount-point 
"/storage/disk3")
                                                         (type "ext4")
                                                         (dependencies 
mapped-devices))
                                                   )
                                         …))

I’m also curious why sources is a list of VG’s as opposed to a list of device
nodes (i.e. /dev/sdX), like the other mappings. Does `pvscan --cache` not work
here?

Lars