SCSI target mode LOR

Attila Nagy bra at
Sun Jan 22 07:52:02 PST 2006


I'm doing some experiments with FreeBSD target mode support on Fibre 
Channel and thought that I should give CURRENT a try too.

The machine itself is an HP BL25p with 8 GB of RAM (but hw.physmem set 
to under 4G, it seems the isp driver needs this) and dual Opterons. 
Running amd64 code.

This is what I get after issuing
scsi_target -A -S -T -W 32 2:0:0 /data/file1

lock order reversal: (sleepable after non-sleepable)
  1st 0xffffffff808ce680 targ global (targ global) @ 
  2nd 0xffffffff808e98c0 kernel environment (kernel environment) @ 
KDB: stack backtrace:
witness_checkorder() at witness_checkorder+0x4f9
_sx_slock() at _sx_slock+0x4d
res_find() at res_find+0x41a
resource_find() at resource_find+0x7e
resource_find_dev() at resource_find_dev+0x5f
cam_periph_alloc() at cam_periph_alloc+0x1df
targioctl() at targioctl+0x3a7
giant_ioctl() at giant_ioctl+0x65
devfs_ioctl_f() at devfs_ioctl_f+0x6f
ioctl() at ioctl+0x147
syscall() at syscall+0x517
Xfast_syscall() at Xfast_syscall+0xa8
--- syscall (54, FreeBSD ELF64, ioctl), rip = 0x800909aac, rsp = 
0x7fffffffbb98, rbp = 0x7fffffffe700 ---


Attila Nagy                                   e-mail: Attila.Nagy at
Free Software Network (FSN.HU)                 phone: +3630 306 6758

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