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Old 11-27-2007, 01:34 PM
Sebastian Dröge
 
Default Bug#453120: mptscsi: Massive workload causes FS to be remounted readonly in VMware guest

Package: linux-2.6
Severity: important

Hi,
when running a Debian system as VMware guest system one could get SCSI
timeouts when there is massive workload on the host system. Since some
kernel version these will get the filesystems remounted read-only, which
probably makes sense for real hardware, but doesn't make sense for
emulated hardware. Instead it should just wait a bit longer.

See
http://www.tuxyturvy.com/blog/index.php?/archives/31-VMware-ESX-and-ext3-journal-aborts.html

for some details and what needs to be changed in the kernel. Redhat and
SuSE seem to have this change in their kernels already it seems and
without that change it's impossible to run Debian as VMWare guest
reliable.

Bye




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Old 11-27-2007, 04:40 PM
maximilian attems
 
Default Bug#453120: mptscsi: Massive workload causes FS to be remounted readonly in VMware guest

tags 453120 moreinfo
severity 453120 normal
stop

On Tue, Nov 27, 2007 at 03:34:31PM +0100, Sebastian Dröge wrote:
> Package: linux-2.6
> Severity: important

hmm your report is missing important info,
you don't tell us which debian version against it is?
-> http://wiki.debian.org/DebianKernelReportingBugs

> Hi,
> when running a Debian system as VMware guest system one could get SCSI
> timeouts when there is massive workload on the host system. Since some
> kernel version these will get the filesystems remounted read-only, which
> probably makes sense for real hardware, but doesn't make sense for
> emulated hardware. Instead it should just wait a bit longer.
>
> See
> http://www.tuxyturvy.com/blog/index.php?/archives/31-VMware-ESX-and-ext3-journal-aborts.html
>
> for some details and what needs to be changed in the kernel. Redhat and
> SuSE seem to have this change in their kernels already it seems and
> without that change it's impossible to run Debian as VMWare guest
> reliable.
>
> Bye

as this page only describes upstream changes,
did you try newer linux-2.6 images from backports.org 2.6.22
or 2.6.23 from trunk snapshots see apt lines on
http://wiki.debian.org/DebianKernel
 
Old 11-27-2007, 06:17 PM
dann frazier
 
Default Bug#453120: mptscsi: Massive workload causes FS to be remounted readonly in VMware guest

On Tue, Nov 27, 2007 at 03:34:31PM +0100, Sebastian Dr??ge wrote:
> Package: linux-2.6
> Severity: important
>
> Hi,
> when running a Debian system as VMware guest system one could get SCSI
> timeouts when there is massive workload on the host system. Since some
> kernel version these will get the filesystems remounted read-only, which
> probably makes sense for real hardware, but doesn't make sense for
> emulated hardware. Instead it should just wait a bit longer.
>
> See
> http://www.tuxyturvy.com/blog/index.php?/archives/31-VMware-ESX-and-ext3-journal-aborts.html
>
> for some details and what needs to be changed in the kernel. Redhat and
> SuSE seem to have this change in their kernels already it seems and
> without that change it's impossible to run Debian as VMWare guest
> reliable.

hey Sebastian,
Your report is missing important version information. Please see:
http://wiki.debian.org/DebianKernelReportingBugs

--
dann frazier




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Old 11-29-2007, 07:30 AM
Sebastian Dröge
 
Default Bug#453120: mptscsi: Massive workload causes FS to be remounted readonly in VMware guest

tags 453120 - moreinfo
thanks

Am Dienstag, den 27.11.2007, 18:40 +0100 schrieb maximilian attems:
> tags 453120 moreinfo
> severity 453120 normal
> stop
>
> On Tue, Nov 27, 2007 at 03:34:31PM +0100, Sebastian Dröge wrote:
> > Package: linux-2.6
> > Severity: important
>
> hmm your report is missing important info,
> you don't tell us which debian version against it is?
> -> http://wiki.debian.org/DebianKernelReportingBugs

Hi,
this is with the etch Kernel, i.e. 2.6.18.dfsg.1-13.

> > Hi,
> > when running a Debian system as VMware guest system one could get SCSI
> > timeouts when there is massive workload on the host system. Since some
> > kernel version these will get the filesystems remounted read-only, which
> > probably makes sense for real hardware, but doesn't make sense for
> > emulated hardware. Instead it should just wait a bit longer.
> >
> > See
> > http://www.tuxyturvy.com/blog/index.php?/archives/31-VMware-ESX-and-ext3-journal-aborts.html
> >
> > for some details and what needs to be changed in the kernel. Redhat and
> > SuSE seem to have this change in their kernels already it seems and
> > without that change it's impossible to run Debian as VMWare guest
> > reliable.
> >
> > Bye
>
> as this page only describes upstream changes,
> did you try newer linux-2.6 images from backports.org 2.6.22
> or 2.6.23 from trunk snapshots see apt lines on
> http://wiki.debian.org/DebianKernel

Thanks, it's fixed at least in 2.6.23-1~experimental.1~snapshot.9819

Would be nice if the relevant change could be backported to etch-updates
or similar.

2.6.23-1~experimental.1~snapshot.9819 has an equivalent change to the
one at the URL above.

Bye




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Old 11-29-2007, 09:04 AM
Sebastian Dröge
 
Default Bug#453120: mptscsi: Massive workload causes FS to be remounted readonly in VMware guest

Am Donnerstag, den 29.11.2007, 09:30 +0100 schrieb Sebastian Dröge:
> tags 453120 - moreinfo
> thanks
>
> Am Dienstag, den 27.11.2007, 18:40 +0100 schrieb maximilian attems:
> > tags 453120 moreinfo
> > severity 453120 normal
> > stop
> >
> > On Tue, Nov 27, 2007 at 03:34:31PM +0100, Sebastian Dröge wrote:
> > > Package: linux-2.6
> > > Severity: important
> >
> > hmm your report is missing important info,
> > you don't tell us which debian version against it is?
> > -> http://wiki.debian.org/DebianKernelReportingBugs
>
> Hi,
> this is with the etch Kernel, i.e. 2.6.18.dfsg.1-13.
>
> > > Hi,
> > > when running a Debian system as VMware guest system one could get SCSI
> > > timeouts when there is massive workload on the host system. Since some
> > > kernel version these will get the filesystems remounted read-only, which
> > > probably makes sense for real hardware, but doesn't make sense for
> > > emulated hardware. Instead it should just wait a bit longer.
> > >
> > > See
> > > http://www.tuxyturvy.com/blog/index.php?/archives/31-VMware-ESX-and-ext3-journal-aborts.html
> > >
> > > for some details and what needs to be changed in the kernel. Redhat and
> > > SuSE seem to have this change in their kernels already it seems and
> > > without that change it's impossible to run Debian as VMWare guest
> > > reliable.
> > >
> > > Bye
> >
> > as this page only describes upstream changes,
> > did you try newer linux-2.6 images from backports.org 2.6.22
> > or 2.6.23 from trunk snapshots see apt lines on
> > http://wiki.debian.org/DebianKernel
>
> Thanks, it's fixed at least in 2.6.23-1~experimental.1~snapshot.9819
>
> Would be nice if the relevant change could be backported to etch-updates
> or similar.
>
> 2.6.23-1~experimental.1~snapshot.9819 has an equivalent change to the
> one at the URL above.

FYI it's changed in upstream commit
ad8c31bb69d60c0c6bc6431bccdf67e5a96c0d31

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=ad8c31bb69d60c0c6bc6431bccd f67e5a96c0d31




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