Re: [Iscsitarget-devel] Abort Task ?

[Ming Zhang <blackmagic02881@gmail.com>]

On Thu, 2007-10-18 at 18:33 +0200, BERTRAND Joël wrote:
> Ming Zhang wrote:
> > On Thu, 2007-10-18 at 11:33 -0400, Ross S. W. Walker wrote:
> >> BERTRAND Joël wrote:
> >>> BERTRAND Joël wrote:
> >>>> BERTRAND Joël wrote:
> >>>>> 	Hello,
> >>>>>
> >>>>> 	When I try to create a raid1 volume over iscsi, process 
> >>> aborts with :
> >>>>> - on target side:
> >>>>>
> >>>>> iscsi_trgt: cmnd_abort(1156) 29 1 0 42 57344 0 0
> >>>>> iscsi_trgt: Abort Task (01) issued on tid:1 lun:0 by 
> >>> sid:630024457682948 
> >>>>> (Unknown Task)
> >>>> 	Next run:
> >>>> iscsi_trgt: cmnd_abort(1156) 13 1 0 42 57344 0 0
> >>>> iscsi_trgt: Abort Task (01) issued on tid:1 lun:0 by 
> >>> sid:630058817421315 
> >>>> (Unknown Task)
> >>>>
> >>>> 	You can see that both lines are very similar. I shall 
> >>> try to use 
> >>>> blockio instead fileio.
> >>> 	With blockio, I got the following message...
> >>>
> >>> iscsi_trgt: cmnd_abort(1156) c 1 0 42 8192 0 0
> >>> iscsi_trgt: Abort Task (01) issued on tid:1 lun:0 by 
> >>> sid:630024457682946 
> >>> (Unknown Task)
> >>>
> >>> Command is the same. What is the signification of 1156 ?
> >> Both outputs are from the same Abort Task management function
> >> the 1156 refers to the line in iscsi.c where the debug printf
> >> was issued.
> >>
> >> The other is the more verbose informative message that says
> >> an Abort Task command was issued, but the task was not found.
> > 
> > pure guess, this might because the sparc64 you are using.
> > 
> > could you export a NULLIO target and do some intensive io tests? sort
> > out these platform issues first...
> 
> 	I can format serveral times (mkfs.ext3) a 1.5 TB volume over iSCSI 
> without any trouble. I can read and write on this virtual disk without 
> any trouble.
> 
> 	Now, I have configured ietd with :
> 
> Lun 0 Sectors=1464725758,Type=nullio
> 
> and I run on initiator side :
> 
> Root gershwin:[/dev] > dd if=/dev/zero of=/dev/sdj bs=8192
> 479482+0 records in
> 479482+0 records out
> 3927916544 bytes (3.9 GB) copied, 153.222 seconds, 25.6 MB/s

25MB/s over a NULLIO is a very slow result...


> 
> Root gershwin:[/dev] > dd if=/dev/zero of=/dev/sdj bs=8192
> 
> 	I'm waitinfor a crash. No one when I write these lines.	I suspect an 
> interaction between raid and iscsi.
> 
> 	Regards,
> 
> 	JKB
-- 
Ming Zhang


@#$%^ purging memory... (*!%
http://blackmagic02881.wordpress.com/
http://www.linkedin.com/in/blackmagic02881
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