swills / virtfs-9p-kmod

virtfs-9p-kmod based on code from Juniper

Build tested on 12.x, 13.x and 14.x. Run tested on 12.x.

Add these flags to bhyve: -s 28,virtio-9p,9p=/some/local/path

In the bhyve VM, load the module and then:

mount -t virtfs -o trans=virtio 9p /some/vm/path

See also:

• 9p review for bhyve
• lib9p
• 9P
• 9P protocol

virtfs-9p-kmod's Issues

Kernel panic on FreeBSD 13.1

panic: lockmgr_xlock_hard: recursing on non recursive lockmgr 0xfffff80016788440 @ /usr/src/sys/kern/vfs_subr.c:3043

cpuid = 0
time = 1670451810
KDB: stack backtrace:
#0 0xffffffff80c69465 at kdb_backtrace+0x65
#1 0xffffffff80c1bb1f at vpanic+0x17f
#2 0xffffffff80c1b993 at panic+0x43
#3 0xffffffff80bee4eb at lockmgr_xlock_hard+0x49b
#4 0xffffffff80bee803 at __lockmgr_args+0x213
#5 0xffffffff80beda8b at lockmgr_lock_flags+0xcb
#6 0xffffffff80d0ea58 at _vn_lock+0x48
#7 0xffffffff80cf7321 at vget_finish+0x21
#8 0xffffffff80ce7534 at vfs_hash_get+0xb4
#9 0xffffffff8231bc64 at virtfs_vget_common+0xc4
#10 0xffffffff8231cff5 at virtfs_lookup+0x645
#11 0xffffffff80ce9bbc at lookup+0x45c
#12 0xffffffff80ce8de9 at namei+0x259
#13 0xffffffff80d06953 at kern_statat+0xf3
#14 0xffffffff80d0704f at sys_fstatat+0x2f
#15 0xffffffff810b06ec at amd64_syscall+0x10c
#16 0xffffffff81087e3b at fast_syscall_common+0xf8
Uptime: 4m29s