* Unresolved - qemu-dm crash under high dom0 disk load
@ 2008-01-30 16:09 Randy McAnally
2008-01-30 16:32 ` Keir Fraser
0 siblings, 1 reply; 6+ messages in thread
From: Randy McAnally @ 2008-01-30 16:09 UTC (permalink / raw)
To: xen-devel
This is regarding a long unresolved issue with HVM qemu-dm crashing under
heavy Dom0 IO load.
I decided to make a new thread on this seeing that I found many old ones
scattered about with no resolution:
Here are old threads regarding the same/similar issue
http://lists.xensource.com/archives/html/xen-users/2007-08/msg00135.html
http://lists.xensource.com/archives/html/xen-users/2007-07/msg00624.html
Old bug reports of the issue:
http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=542
http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1038
In 1038, spam@abma.de _incorrectly_ reports it is fixed in 3.1.1 -- Not only
can I find any evidence of this, I can EASILY reproduce the crash over and
over with 3.1.3-rc2.
I have a dev. Xen box available for anyone who wants access for stack
traces, ect.
Unfortunately I myself do not have enough knowledge to find the problem
myself, however I am available to instruct on how to produce the bug, run
stack traces, help organize this effort, and provide unrestricted access to
this dev machine if needed.
--
Randy McAnally
Fast Serv Networks, LLC
619-819-8252 x201
619-819-9443 fax
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Unresolved - qemu-dm crash under high dom0 disk load
2008-01-30 16:09 Unresolved - qemu-dm crash under high dom0 disk load Randy McAnally
@ 2008-01-30 16:32 ` Keir Fraser
2008-01-30 17:19 ` Randy McAnally
2008-01-30 17:37 ` Dan Magenheimer
0 siblings, 2 replies; 6+ messages in thread
From: Keir Fraser @ 2008-01-30 16:32 UTC (permalink / raw)
To: Randy McAnally, xen-devel
[-- Attachment #1: Type: text/plain, Size: 1226 bytes --]
Please try the attached patch.
-- Keir
On 30/1/08 16:09, "Randy McAnally" <rsm@fast-serv.com> wrote:
> This is regarding a long unresolved issue with HVM qemu-dm crashing under
> heavy Dom0 IO load.
>
> I decided to make a new thread on this seeing that I found many old ones
> scattered about with no resolution:
>
> Here are old threads regarding the same/similar issue
>
> http://lists.xensource.com/archives/html/xen-users/2007-08/msg00135.html
> http://lists.xensource.com/archives/html/xen-users/2007-07/msg00624.html
>
> Old bug reports of the issue:
>
> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=542
> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1038
>
> In 1038, spam@abma.de _incorrectly_ reports it is fixed in 3.1.1 -- Not only
> can I find any evidence of this, I can EASILY reproduce the crash over and
> over with 3.1.3-rc2.
>
> I have a dev. Xen box available for anyone who wants access for stack
> traces, ect.
>
> Unfortunately I myself do not have enough knowledge to find the problem
> myself, however I am available to instruct on how to produce the bug, run
> stack traces, help organize this effort, and provide unrestricted access to
> this dev machine if needed.
[-- Attachment #2: ioemu-ide-thread-race --]
[-- Type: application/octet-stream, Size: 680 bytes --]
Fix race where a bm can get kicked off twice, resulting in an ioemu crash
because the bm is no longer valid.
diff -r a2b4ffd594a8 tools/ioemu/hw/ide.c
--- a/tools/ioemu/hw/ide.c Thu Jun 14 14:26:39 2007 +0100
+++ b/tools/ioemu/hw/ide.c Thu Jun 14 14:30:51 2007 +0100
@@ -427,7 +427,8 @@ static void *dma_thread_func(void* opaqu
if (rv != 0) {
if (read(file_pipes[0], &req, sizeof(req)) == 0)
return NULL;
- dma_thread_loop(req);
+ if (req->status & BM_STATUS_DMAING)
+ dma_thread_loop(req);
} else {
if (suspend_requested) {
/* Need to tidy up the DMA thread so that we don't end up
[-- Attachment #3: Type: text/plain, Size: 138 bytes --]
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: Unresolved - qemu-dm crash under high dom0 disk load
2008-01-30 16:32 ` Keir Fraser
@ 2008-01-30 17:19 ` Randy McAnally
2008-01-30 17:37 ` Dan Magenheimer
1 sibling, 0 replies; 6+ messages in thread
From: Randy McAnally @ 2008-01-30 17:19 UTC (permalink / raw)
To: Keir Fraser, xen-devel
So far, so good. Haven't been able to crash a DomU.
--
Randy McAnally
Fast Serv Networks, LLC
619-819-8252 x201
619-819-9443 fax
---------- Original Message -----------
From: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
To: Randy McAnally <rsm@fast-serv.com>, <xen-devel@lists.xensource.com>
Sent: Wed, 30 Jan 2008 16:32:36 +0000
Subject: Re: [Xen-devel] Unresolved - qemu-dm crash under high dom0 disk load
> Please try the attached patch.
>
> -- Keir
>
> On 30/1/08 16:09, "Randy McAnally" <rsm@fast-serv.com> wrote:
>
> > This is regarding a long unresolved issue with HVM qemu-dm crashing under
> > heavy Dom0 IO load.
> >
> > I decided to make a new thread on this seeing that I found many old ones
> > scattered about with no resolution:
> >
> > Here are old threads regarding the same/similar issue
> >
> > http://lists.xensource.com/archives/html/xen-users/2007-08/msg00135.html
> > http://lists.xensource.com/archives/html/xen-users/2007-07/msg00624.html
> >
> > Old bug reports of the issue:
> >
> > http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=542
> > http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1038
> >
> > In 1038, spam@abma.de _incorrectly_ reports it is fixed in 3.1.1 -- Not
only
> > can I find any evidence of this, I can EASILY reproduce the crash over
and
> > over with 3.1.3-rc2.
> >
> > I have a dev. Xen box available for anyone who wants access for stack
> > traces, ect.
> >
> > Unfortunately I myself do not have enough knowledge to find the problem
> > myself, however I am available to instruct on how to produce the bug, run
> > stack traces, help organize this effort, and provide unrestricted access
to
> > this dev machine if needed.
------- End of Original Message -------
^ permalink raw reply [flat|nested] 6+ messages in thread
* RE: Unresolved - qemu-dm crash under high dom0 disk load
2008-01-30 16:32 ` Keir Fraser
2008-01-30 17:19 ` Randy McAnally
@ 2008-01-30 17:37 ` Dan Magenheimer
2008-01-30 17:40 ` Keir Fraser
1 sibling, 1 reply; 6+ messages in thread
From: Dan Magenheimer @ 2008-01-30 17:37 UTC (permalink / raw)
To: Keir Fraser, Randy McAnally, xen-devel@lists.xensource.com
If this solves the problem, it would be nice to slide it into 3.1.3 final.
> -----Original Message-----
> From: xen-devel-bounces@lists.xensource.com
> [mailto:xen-devel-bounces@lists.xensource.com]On Behalf Of Keir Fraser
> Sent: Wednesday, January 30, 2008 9:33 AM
> To: Randy McAnally; xen-devel@lists.xensource.com
> Subject: Re: [Xen-devel] Unresolved - qemu-dm crash under
> high dom0 disk
> load
>
>
> Please try the attached patch.
>
> -- Keir
>
> On 30/1/08 16:09, "Randy McAnally" <rsm@fast-serv.com> wrote:
>
> > This is regarding a long unresolved issue with HVM qemu-dm
> crashing under
> > heavy Dom0 IO load.
> >
> > I decided to make a new thread on this seeing that I found
> many old ones
> > scattered about with no resolution:
> >
> > Here are old threads regarding the same/similar issue
> >
> >
> http://lists.xensource.com/archives/html/xen-users/2007-08/msg
00135.html
> http://lists.xensource.com/archives/html/xen-users/2007-07/msg00624.html
>
> Old bug reports of the issue:
>
> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=542
> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1038
>
> In 1038, spam@abma.de _incorrectly_ reports it is fixed in 3.1.1 -- Not only
> can I find any evidence of this, I can EASILY reproduce the crash over and
> over with 3.1.3-rc2.
>
> I have a dev. Xen box available for anyone who wants access for stack
> traces, ect.
>
> Unfortunately I myself do not have enough knowledge to find the problem
> myself, however I am available to instruct on how to produce the bug, run
> stack traces, help organize this effort, and provide unrestricted access to
> this dev machine if needed.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Unresolved - qemu-dm crash under high dom0 disk load
2008-01-30 17:37 ` Dan Magenheimer
@ 2008-01-30 17:40 ` Keir Fraser
2008-01-30 17:42 ` Randy McAnally
0 siblings, 1 reply; 6+ messages in thread
From: Keir Fraser @ 2008-01-30 17:40 UTC (permalink / raw)
To: dan.magenheimer@oracle.com, Randy McAnally,
xen-devel@lists.xensource.com
Sure. I'm confident to slip this one in without doing another rc.
-- Keir
On 30/1/08 17:37, "Dan Magenheimer" <dan.magenheimer@oracle.com> wrote:
> If this solves the problem, it would be nice to slide it into 3.1.3 final.
>
>> -----Original Message-----
>> From: xen-devel-bounces@lists.xensource.com
>> [mailto:xen-devel-bounces@lists.xensource.com]On Behalf Of Keir Fraser
>> Sent: Wednesday, January 30, 2008 9:33 AM
>> To: Randy McAnally; xen-devel@lists.xensource.com
>> Subject: Re: [Xen-devel] Unresolved - qemu-dm crash under
>> high dom0 disk
>> load
>>
>>
>> Please try the attached patch.
>>
>> -- Keir
>>
>> On 30/1/08 16:09, "Randy McAnally" <rsm@fast-serv.com> wrote:
>>
>>> This is regarding a long unresolved issue with HVM qemu-dm
>> crashing under
>>> heavy Dom0 IO load.
>>>
>>> I decided to make a new thread on this seeing that I found
>> many old ones
>>> scattered about with no resolution:
>>>
>>> Here are old threads regarding the same/similar issue
>>>
>>>
>> http://lists.xensource.com/archives/html/xen-users/2007-08/msg
> 00135.html
>> http://lists.xensource.com/archives/html/xen-users/2007-07/msg00624.html
>>
>> Old bug reports of the issue:
>>
>> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=542
>> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1038
>>
>> In 1038, spam@abma.de _incorrectly_ reports it is fixed in 3.1.1 -- Not only
>> can I find any evidence of this, I can EASILY reproduce the crash over and
>> over with 3.1.3-rc2.
>>
>> I have a dev. Xen box available for anyone who wants access for stack
>> traces, ect.
>>
>> Unfortunately I myself do not have enough knowledge to find the problem
>> myself, however I am available to instruct on how to produce the bug, run
>> stack traces, help organize this effort, and provide unrestricted access to
>> this dev machine if needed.
>
>
>
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: Unresolved - qemu-dm crash under high dom0 disk load
2008-01-30 17:40 ` Keir Fraser
@ 2008-01-30 17:42 ` Randy McAnally
0 siblings, 0 replies; 6+ messages in thread
From: Randy McAnally @ 2008-01-30 17:42 UTC (permalink / raw)
To: Keir Fraser, dan.magenheimer@oracle.com,
xen-devel@lists.xensource.com
This certainly solves the issues I've been having. Thanks so much for all
your hard work, Keir.
--
Randy McAnally
Fast Serv Networks, LLC
619-819-8252 x201
619-819-9443 fax
---------- Original Message -----------
From: Keir Fraser <Keir.Fraser@cl.cam.ac.uk>
To: "dan.magenheimer@oracle.com" <dan.magenheimer@oracle.com>, Randy
McAnally <rsm@fast-serv.com>, "xen-devel@lists.xensource.com" <xen-
devel@lists.xensource.com>
Sent: Wed, 30 Jan 2008 17:40:22 +0000
Subject: Re: [Xen-devel] Unresolved - qemu-dm crash under high dom0 disk load
> Sure. I'm confident to slip this one in without doing another rc.
>
> -- Keir
>
> On 30/1/08 17:37, "Dan Magenheimer" <dan.magenheimer@oracle.com> wrote:
>
> > If this solves the problem, it would be nice to slide it into 3.1.3
final.
> >
> >> -----Original Message-----
> >> From: xen-devel-bounces@lists.xensource.com
> >> [mailto:xen-devel-bounces@lists.xensource.com]On Behalf Of Keir Fraser
> >> Sent: Wednesday, January 30, 2008 9:33 AM
> >> To: Randy McAnally; xen-devel@lists.xensource.com
> >> Subject: Re: [Xen-devel] Unresolved - qemu-dm crash under
> >> high dom0 disk
> >> load
> >>
> >>
> >> Please try the attached patch.
> >>
> >> -- Keir
> >>
> >> On 30/1/08 16:09, "Randy McAnally" <rsm@fast-serv.com> wrote:
> >>
> >>> This is regarding a long unresolved issue with HVM qemu-dm
> >> crashing under
> >>> heavy Dom0 IO load.
> >>>
> >>> I decided to make a new thread on this seeing that I found
> >> many old ones
> >>> scattered about with no resolution:
> >>>
> >>> Here are old threads regarding the same/similar issue
> >>>
> >>>
> >> http://lists.xensource.com/archives/html/xen-users/2007-08/msg
> > 00135.html
> >> http://lists.xensource.com/archives/html/xen-users/2007-07/msg00624.html
> >>
> >> Old bug reports of the issue:
> >>
> >> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=542
> >> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1038
> >>
> >> In 1038, spam@abma.de _incorrectly_ reports it is fixed in 3.1.1 -- Not
only
> >> can I find any evidence of this, I can EASILY reproduce the crash over
and
> >> over with 3.1.3-rc2.
> >>
> >> I have a dev. Xen box available for anyone who wants access for stack
> >> traces, ect.
> >>
> >> Unfortunately I myself do not have enough knowledge to find the problem
> >> myself, however I am available to instruct on how to produce the bug,
run
> >> stack traces, help organize this effort, and provide unrestricted
access to
> >> this dev machine if needed.
> >
> >
> >
------- End of Original Message -------
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2008-01-30 17:42 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2008-01-30 16:09 Unresolved - qemu-dm crash under high dom0 disk load Randy McAnally
2008-01-30 16:32 ` Keir Fraser
2008-01-30 17:19 ` Randy McAnally
2008-01-30 17:37 ` Dan Magenheimer
2008-01-30 17:40 ` Keir Fraser
2008-01-30 17:42 ` Randy McAnally
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