Hey All,

I'm having some issues with a snv_126 file server running on an HP ML370 G6
server with an Adaptec Raid Card (31605). The server has the rpool, plus two
raidz2 data pools (one is 1.5TB and 1.0TB respectively). I have been using
e-sata to backup the pools to a pool that contains 3x 1.5 Tb drives every
week.  This has all worked great for the last 4 or so months.

Starting last week, the machine would panic and reboot when attempting to
perform a backup. This week, the machine has been randomly rebooting every
3-15 hours (with or without backup pool attached), complaining of:

(#pf Page fault) rp=ffffff0010568eb0 addr=30 occurred in module "zfs" due to
a NULL pointer dereference

I use cron to perform a scrub of all pools every night, and there have been
no errors what so ever.

Below is the output from mdb $C on the core dump:

rcher...@stubborn2:/var/crash/Stubborn2$ mdb 0
Loading modules: [ unix genunix specfs dtrace mac cpu.generic uppc pcplusmp
rootnex scsi_vhci zfs sd sockfs ip hook neti sctp arp usba uhci fctl md lofs
fcip fcp cpc random crypto smbsrv nfs logindmux ptm ufs nsmb sppp ipc ]
> $C
ffffff000f4ef3b0 vdev_is_dead+0xc(0)
ffffff000f4ef3d0 vdev_readable+0x16(0)
ffffff000f4ef410 vdev_mirror_child_select+0x61(ffffff02fa41da10)
ffffff000f4ef450 vdev_mirror_io_start+0xda(ffffff02fa41da10)
ffffff000f4ef490 zio_vdev_io_start+0x1ba(ffffff02fa41da10)
ffffff000f4ef4c0 zio_execute+0xa0(ffffff02fa41da10)
ffffff000f4ef4e0 zio_nowait+0x42(ffffff02fa41da10)
ffffff000f4ef580 arc_read_nolock+0x82d(0, ffffff02d716b000,
ffffff02e3fdc000, 0, 0, 6, 3, ffffff000f4ef65c, ffffff000f4ef670)
ffffff000f4ef620 arc_read+0x75(0, ffffff02d716b000, ffffff02e3fdc000,
ffffff02e3a7f928, 0, 0, 6, 3, ffffff000f4ef65c, ffffff000f4ef670)
ffffff000f4ef6c0 dbuf_prefetch+0x131(ffffff02e3a80018, 20)
ffffff000f4ef710 dmu_zfetch_fetch+0xa8(ffffff02e3a80018, 20, 1)
ffffff000f4ef750 dmu_zfetch_dofetch+0xb8(ffffff02e3a80278, ffffff02f4c52868)
ffffff000f4ef7b0 dmu_zfetch_find+0x436(ffffff02e3a80278, ffffff000f4ef7c0,
1)
ffffff000f4ef870 dmu_zfetch+0xac(ffffff02e3a80278, 2b0000, 4000, 1)
ffffff000f4ef8d0 dbuf_read+0x170(ffffff02f3d8ea00, 0, 2)
ffffff000f4ef950 dnode_hold_impl+0xed(ffffff02e2a2f040, 1591, 1,
ffffff02e4e71478, ffffff000f4ef998)
ffffff000f4ef980 dnode_hold+0x2b(ffffff02e2a2f040, 1591, ffffff02e4e71478,
ffffff000f4ef998)
ffffff000f4ef9e0 dmu_tx_hold_object_impl+0x4a(ffffff02e4e71478,
ffffff02e2a2f040, 1591, 2, 0, 0)
ffffff000f4efa00 dmu_tx_hold_bonus+0x2a(ffffff02e4e71478, 1591)
ffffff000f4efa50 zfs_inactive+0x99(ffffff030213ae80, ffffff02d4ed6d88, 0)
ffffff000f4efaa0 fop_inactive+0xaf(ffffff030213ae80, ffffff02d4ed6d88, 0)
ffffff000f4efac0 vn_rele+0x5f(ffffff030213ae80)
ffffff000f4efae0 smb_node_free+0x7d(ffffff02f098b2a0)
ffffff000f4efb10 smb_node_release+0x9a(ffffff02f098b2a0)
ffffff000f4efb30 smb_ofile_delete+0x76(ffffff03026d5d18)
ffffff000f4efb60 smb_ofile_release+0x84(ffffff03026d5d18)
ffffff000f4efb80 smb_request_free+0x23(ffffff02fa4b0058)
ffffff000f4efbb0 smb_session_worker+0x6e(ffffff02fa4b0058)
ffffff000f4efc40 taskq_d_thread+0xb1(ffffff02e51b9e90)
ffffff000f4efc50 thread_start+8()
> 


I can provide any other info that may be need. Thank you in advance for your
help!

Rob
-- 
Rob Cherveny 

Manager of Information Technology
American Junior Golf Association
770.868.4200 


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