Nigel,

Was the iSCSI target daemon running and the targets are gone? or did the daemon core repeatedly?

  How did you created the targets?

-tim

eric kustarz wrote:
Hi Tim,

Is the iSCSI target not coming back up after a reboot a known problem?

Can you take a look?

eric

Begin forwarded message:

From: eric kustarz <[EMAIL PROTECTED]>
Date: May 16, 2007 8:56:44 AM PDT
To: Nigel Smith <[EMAIL PROTECTED]>
Cc: zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] Re: snv63: kernel panic on import


On May 15, 2007, at 4:49 PM, Nigel Smith wrote:

I seem to have got the same core dump, in a different way.
I had a zpool setup on a iscsi 'disk'.  For details see:
http://mail.opensolaris.org/pipermail/storage-discuss/2007-May/001162.html But after a reboot the iscsi target was not longer available, so the iscsi
initiator could not provide the disk that he zpool was based on.
I did a 'zpool status', but the PC just rebooted, rather than handling it in a
graceful way.
After the reboot I discover a core dump has been created - details below:

ZFS panic'ing on a failed write in a non-redundant pool is known and is being worked on. Why the iSCSI device didn't come up is also a bug. I'll ask the iSCSI people to take a look...

eric


# cat /etc/release
                            Solaris Nevada snv_60 X86
           Copyright 2007 Sun Microsystems, Inc.  All Rights Reserved.
                        Use is subject to license terms.
                             Assembled 12 March 2007
#
# cd /var/crash/solaris
# mdb -k 1
Loading modules: [ unix genunix specfs dtrace uppc pcplusmp scsi_vhci ufs ip hook neti sctp arp usba uhci qlc fctl nca lofs zfs random md cpc crypto fcip fcp logindmux ptm
  sppp emlxs ipc ]
::status
debugging crash dump vmcore.1 (64-bit) from solaris
operating system: 5.11 snv_60 (i86pc)
panic message:
ZFS: I/O failure (write on <unknown> off 0: zio fffffffec38cf340 [L0 packed nvlist] 4000L/600P DVA[0]=<0:160225800:600> DVA[1]=<0:9800:600> fletcher4 lzjb LE contiguous
  birth=192896 fill=1 cksum=6b28
dump content: kernel pages only
*panic_thread::findstack -v
stack pointer for thread ffffff00025b2c80: ffffff00025b28f0
  ffffff00025b29e0 panic+0x9c()
  ffffff00025b2a40 zio_done+0x17c(fffffffec38cf340)
  ffffff00025b2a60 zio_next_stage+0xb3(fffffffec38cf340)
ffffff00025b2ab0 zio_wait_for_children+0x5d(fffffffec38cf340, 11, fffffffec38cf598)
  ffffff00025b2ad0 zio_wait_children_done+0x20(fffffffec38cf340)
  ffffff00025b2af0 zio_next_stage+0xb3(fffffffec38cf340)
  ffffff00025b2b40 zio_vdev_io_assess+0x129(fffffffec38cf340)
  ffffff00025b2b60 zio_next_stage+0xb3(fffffffec38cf340)
  ffffff00025b2bb0 vdev_mirror_io_done+0x2af(fffffffec38cf340)
  ffffff00025b2bd0 zio_vdev_io_done+0x26(fffffffec38cf340)
  ffffff00025b2c60 taskq_thread+0x1a7(fffffffec154f018)
  ffffff00025b2c70 thread_start+8()
::cpuinfo -v
ID ADDR FLG NRUN BSPL PRI RNRN KRNRN SWITCH THREAD PROC 0 fffffffffbc31f80 1b 2 0 99 no no t-0 ffffff00025b2c80 sched
                       |    |
            RUNNING <--+    +-->  PRI THREAD           PROC
              READY                60 ffffff00022c9c80 sched
             EXISTS                60 ffffff00020e9c80 sched
             ENABLE

ID ADDR FLG NRUN BSPL PRI RNRN KRNRN SWITCH THREAD PROC 1 fffffffec11ad000 1f 3 0 59 yes no t-0 fffffffec3dcbbc0 syslogd
                       |    |
            RUNNING <--+    +-->  PRI THREAD           PROC
              READY                60 ffffff000212bc80 sched
           QUIESCED                59 fffffffec1e51360 syslogd
             EXISTS                59 fffffffec1ec2180 syslogd
             ENABLE

::quit


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