You have a raw disk image named slurm.img. Let's inspect it to see what's up.

	# fdisk -l slurm.img
	Disk slurm.img: 20 GiB, 21474836480 bytes, 41943040 sectors
	Units: sectors of 1 * 512 = 512 bytes
	Sector size (logical/physical): 512 bytes / 512 bytes
	I/O size (minimum/optimal): 512 bytes / 512 bytes
	Disklabel type: dos
	Disk identifier: 0xe1b0245d

	Device     Boot   Start      End  Sectors Size Id Type
	slurm.img1 *       2048  2099199  2097152   1G 83 Linux
	slurm.img2      2099200 41943039 39843840  19G 8e Linux LVM

We can mount this using losetup(8).

	# losetup -f
	/dev/loop0

	# losetup /dev/loop0 slurm.img

Note the 'losetup -f' which identifies the first unused /dev/loop* device.

Now use kpartx(8) to map the partitions of the loop device (assuming loop0,
substitute as appropriate):

	# kpartx -a /dev/loop0

	# lsblk /dev/loop0
	NAME      MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
	loop0       7:0    0  20G  0 loop
	├─loop0p1 253:3    0   1G  0 part
	└─loop0p2 253:4    0  19G  0 part

We know that there's supposed to be LVM somewhere, so we must instruct LVM to
look for data on loop devices if we haven't done so already:

	# lvmdevices --adddev /dev/mapper/loop0p2

	# vgscan -a
	[ ... ]
	Found volume group "cl_slurm" using metadata type lvm2

	# vgchange -ay cl_slurm
	  2 logical volume(s) in volume group "cl_slurm" now active

	# ls /dev/mapper/cl_slurm-*
	/dev/mapper/cl_slurm-root
	/dev/mapper/cl_slurm-swap

Now we can mount the partition and poke around:

	# mount -oro /dev/mapper/cl_slurm-root /some/mountpoint

We're done, let's clean up.

	# umount /some/mountpoint

	# vgchange -an cl_slurm
	  0 logical volume(s) in volume group "cl_slurm" now active

	# kpartx -d slurm.img