(destiny:8:03:PDT)% sudo mount -t xfs,ro /dev/loop0 XFS
mount: /home/prox/XFS: unknown filesystem type.
(destiny:8:03:PDT)% 

[2037129.294160] XFS (loop0): Mounting V4 Filesystem
[2037129.295559] XFS (loop0): null uuid in log - IRIX style log
[2037129.296753] XFS (loop0): Starting recovery (logdev: internal)
[2037129.296962] XFS (loop0): Internal error head->h_fmt != cpu_to_be32(XLOG_FMT) at line 245 of file fs/xfs/xfs_log_recover.c.  Caller xlog_header_check_recover+0x81/0xd0 [xfs]
[2037129.296970] CPU: 5 PID: 2360610 Comm: mount Tainted: P        W  OE     5.6.0-2-amd64 #1 Debian 5.6.14-1
[2037129.296974] Hardware name: Micro-Star International Co., Ltd. MS-7B12/MEG Z390 ACE (MS-7B12), BIOS 1.00 09/07/2018
[2037129.296977] Call Trace:
[2037129.296990]  dump_stack+0x66/0x90
[2037129.297073]  xfs_corruption_error+0x85/0x90 [xfs]
[2037129.297162]  ? xlog_header_check_recover+0x81/0xd0 [xfs]
[2037129.297246]  xlog_header_check_recover+0xae/0xd0 [xfs]
[2037129.297328]  ? xlog_header_check_recover+0x81/0xd0 [xfs]
[2037129.297410]  xlog_recover_process_data+0x45/0x130 [xfs]
[2037129.297490]  xlog_do_recovery_pass+0x508/0x5f0 [xfs]
[2037129.297501]  ? wake_up_klogd.part.0+0x30/0x40
[2037129.297582]  xlog_do_log_recovery+0x62/0xb0 [xfs]
[2037129.297658]  xlog_do_recover+0x2c/0x1a0 [xfs]
[2037129.297734]  xlog_recover+0xd7/0x170 [xfs]
[2037129.297816]  xfs_log_mount+0x156/0x2b0 [xfs]
[2037129.297899]  xfs_mountfs+0x45b/0x8b0 [xfs]
[2037129.297981]  xfs_fc_fill_super+0x318/0x540 [xfs]
[2037129.298059]  ? xfs_mount_free+0x30/0x30 [xfs]
[2037129.298068]  get_tree_bdev+0x15c/0x250
[2037129.298076]  vfs_get_tree+0x25/0xb0
[2037129.298083]  do_mount+0x770/0x980
[2037129.298091]  ? memdup_user+0x4e/0x90
[2037129.298097]  __x64_sys_mount+0x8e/0xd0
[2037129.298106]  do_syscall_64+0x52/0x180
[2037129.298115]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[2037129.298120] RIP: 0033:0x7fd49809ee1a
[2037129.298126] Code: 48 8b 0d 79 e0 0b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 46 e0 0b 00 f7 d8 64 89 01 48
[2037129.298130] RSP: 002b:00007ffde5cb2e08 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
[2037129.298136] RAX: ffffffffffffffda RBX: 00007fd4981c0224 RCX: 00007fd49809ee1a
[2037129.298139] RDX: 000055cac95e9420 RSI: 000055cac95e93c0 RDI: 000055cac95e66b0
[2037129.298142] RBP: 000055cac95e6460 R08: 0000000000000000 R09: 00007ffde5cb1b60
[2037129.298145] R10: 0000000000008000 R11: 0000000000000246 R12: 000055cac95e9420
[2037129.298148] R13: 000055cac95e66b0 R14: 000055cac95e9420 R15: 000055cac95e9423
[2037129.298154] XFS (loop0): Corruption detected. Unmount and run xfs_repair
[2037129.298157] XFS (loop0): dirty log written in incompatible format - can't recover
[2037129.298164] XFS (loop0): log mount/recovery failed: error -5
[2037129.298248] XFS (loop0): log mount failed