Date: Mon, 19 Jul 1999 00:26:32 -0700 (PDT) From: Matthew Jacob <mjacob@feral.com> To: Juergen Lock <nox@jelal.kn-bremen.de> Cc: freebsd-bugs@FreeBSD.ORG Subject: Re: kern/11945: tape problems on -stable, mt bl(ocksize), mt erase and hanging SCSI bus Message-ID: <Pine.BSF.4.05.9907190025030.28658-100000@semuta.feral.com> In-Reply-To: <19990717040530.A35804@saturn.kn-bremen.de>
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What did you do prior to running the erase? It's possible that another
tape command didn't free a ccb. It's also possible that this is just
taking a "forever" time because the tape unit died doing the erase- the
timeout is 4 hours.
On Sat, 17 Jul 1999, Juergen Lock wrote:
> On Wed, Jul 14, 1999 at 07:53:53PM +0200, Juergen Lock wrote:
> > On Mon, Jul 12, 1999 at 05:33:51PM -0700, Matthew Jacob wrote:
>
> > > >
> > > > 2. mt erase fails similarly (I don't have the syslog right
> > > > now, sorry)
> > >
> > > Possibly due to the same cause.
> > >
> > Yup, its working now as i type.
>
> Hmm. I spoke too soon it seems... it worked once at that day but
> today it just went hanging similar to how mt retension hung:
>
> bash# gdb -k /kernel /dev/mem
> GNU gdb 4.18
> Copyright 1998 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB. Type "show warranty" for details.
> This GDB was configured as "i386-unknown-freebsd"...
> IdlePTD 3100672
> initial pcb at 386000
> panic messages:
> ---
> ---
> #0 mi_switch () at ../../kern/kern_synch.c:825
> 825 if (switchtime.tv_sec)
> (kgdb) proc 35503
> (kgdb) bt
> #0 mi_switch () at ../../kern/kern_synch.c:825
> #1 0xc015f3e5 in tsleep (ident=0xc0846c28, priority=16,
> wmesg=0xc0224da5 "cbwait", timo=0) at ../../kern/kern_synch.c:443
> #2 0xc01225fd in cam_periph_ccbwait (ccb=0xc0846c00)
> at ../../cam/cam_periph.c:720
> #3 0xc012270a in cam_periph_runccb (ccb=0xc0846c00,
> error_routine=0xc0128144 <saerror>, camflags=CAM_FLAG_NONE, sense_flags=0,
> ds=0xc07ee824) at ../../cam/cam_periph.c:809
> #4 0xc012944b in saerase (periph=0xc07e5180, longerase=1)
> at ../../cam/scsi/scsi_sa.c:3057
> #5 0xc0126d45 in saioctl (dev=3585, cmd=2148035841, arg=0xc3ae9ed0 "\f",
> flag=3, p=0xc39e7fa0) at ../../cam/scsi/scsi_sa.c:974
> #6 0xc018d713 in spec_ioctl (ap=0xc3ae9e0c)
> at ../../miscfs/specfs/spec_vnops.c:424
> #7 0xc018cfbd in spec_vnoperate (ap=0xc3ae9e0c)
> at ../../miscfs/specfs/spec_vnops.c:129
> #8 0xc01c5c2d in ufs_vnoperatespec (ap=0xc3ae9e0c)
> at ../../ufs/ufs/ufs_vnops.c:2317
> #9 0xc0187e01 in vn_ioctl (fp=0xc08b2ac0, com=2148035841,
> data=0xc3ae9ed0 "\f", p=0xc39e7fa0) at vnode_if.h:395
> #10 0xc0168844 in ioctl (p=0xc39e7fa0, uap=0xc3ae9f84)
> at ../../kern/sys_generic.c:564
> #11 0xc01f306f in syscall (frame={tf_es = 39, tf_ds = 39, tf_edi = 5,
> tf_esi = -1077945748, tf_ebp = -1077945800, tf_isp = -1011965996,
> tf_ebx = 134524492, tf_edx = 12, tf_ecx = 134518218, tf_eax = 54,
> tf_trapno = 12, tf_err = 2, tf_eip = 671702344, tf_cs = 31,
> tf_eflags = 515, tf_esp = -1077946204, tf_ss = 39})
> at ../../i386/i386/trap.c:1123
> #12 0xc01e539c in Xint0x80_syscall ()
> #13 0x80486e5 in ?? ()
> (kgdb) q
>
> Ideas anyone?
>
> Regards,
> --
> Juergen Lock <nox.foo@jelal.kn-bremen.de>
> (remove dot foo from address to reply)
>
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