Hi list,
due to the necessity of having a patched KVM running, I build some new RPMs. However, only
kmod-kvm-83-105.27.x86_64.rpm
is important to replace the 'original' one as it's the only package that contains the patch. I didn't rename the packages, though, hopefully in order not to break the upgrade path provided to us.
The patch adresses following problem:
'Fix a race condition where qemu finds that there are not enough virtio ring buffers available and the guest make more buffers available before qemu can enable notifications.' [0], the thread startet as 'network shutdown under heavy load' [1].
KVM already contains the fix (since February 19th, IIRC), CentOS' packages doesn't.
The RPMs can be found here:
http://www.riscworks.net/CentOS/KVM/fix-virt-io-ring-buffer-race/
Best,
Timo
[0] -- http://marc.info/?l=kvm&m=126564542625725&w=2
[1] -- http://www.mail-archive.com/kvm@vger.kernel.org/msg26033.html
On 03/22/2010 12:03 PM, Timo Schoeler wrote:
Hi list,
due to the necessity of having a patched KVM running, I build some new RPMs. However, only
kmod-kvm-83-105.27.x86_64.rpm
is important to replace the 'original' one as it's the only package that contains the patch. I didn't rename the packages, though, hopefully in order not to break the upgrade path provided to us.
The patch adresses following problem:
'Fix a race condition where qemu finds that there are not enough virtio ring buffers available and the guest make more buffers available before qemu can enable notifications.' [0], the thread startet as 'network shutdown under heavy load' [1].
KVM already contains the fix (since February 19th, IIRC), CentOS' packages doesn't.
The RPMs can be found here:
http://www.riscworks.net/CentOS/KVM/fix-virt-io-ring-buffer-race/
does it have an upstream (redhat) bugzilla entry? it'd be better if they fix it...
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thus Farkas Levente spake:
On 03/22/2010 12:03 PM, Timo Schoeler wrote:
Hi list,
due to the necessity of having a patched KVM running, I build some new RPMs. However, only
kmod-kvm-83-105.27.x86_64.rpm
is important to replace the 'original' one as it's the only package that contains the patch. I didn't rename the packages, though, hopefully in order not to break the upgrade path provided to us.
The patch adresses following problem:
'Fix a race condition where qemu finds that there are not enough virtio ring buffers available and the guest make more buffers available before qemu can enable notifications.' [0], the thread startet as 'network shutdown under heavy load' [1].
KVM already contains the fix (since February 19th, IIRC), CentOS' packages doesn't.
The RPMs can be found here:
http://www.riscworks.net/CentOS/KVM/fix-virt-io-ring-buffer-race/
does it have an upstream (redhat) bugzilla entry? it'd be better if they fix it...
Sure, but we had the problem that it constantly crashed several customer's domUs, so we had to fix it ASAP. Just wanted to make it more convenient for people that have the same problem and can _not_ wait until it's fixed upstream.
Timo
On 03/22/2010 12:12 PM, Timo Schoeler wrote:
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thus Farkas Levente spake:
On 03/22/2010 12:03 PM, Timo Schoeler wrote:
Hi list,
due to the necessity of having a patched KVM running, I build some new RPMs. However, only
kmod-kvm-83-105.27.x86_64.rpm
is important to replace the 'original' one as it's the only package that contains the patch. I didn't rename the packages, though, hopefully in order not to break the upgrade path provided to us.
The patch adresses following problem:
'Fix a race condition where qemu finds that there are not enough virtio ring buffers available and the guest make more buffers available before qemu can enable notifications.' [0], the thread startet as 'network shutdown under heavy load' [1].
KVM already contains the fix (since February 19th, IIRC), CentOS' packages doesn't.
The RPMs can be found here:
http://www.riscworks.net/CentOS/KVM/fix-virt-io-ring-buffer-race/
does it have an upstream (redhat) bugzilla entry? it'd be better if they fix it...
Sure, but we had the problem that it constantly crashed several customer's domUs, so we had to fix it ASAP. Just wanted to make it more convenient for people that have the same problem and can _not_ wait until it's fixed upstream.
then at least and src.rpm would be useful...
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thus Farkas Levente spake:
On 03/22/2010 12:12 PM, Timo Schoeler wrote:
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
thus Farkas Levente spake:
On 03/22/2010 12:03 PM, Timo Schoeler wrote:
Hi list,
due to the necessity of having a patched KVM running, I build some new RPMs. However, only
kmod-kvm-83-105.27.x86_64.rpm
is important to replace the 'original' one as it's the only package that contains the patch. I didn't rename the packages, though, hopefully in order not to break the upgrade path provided to us.
The patch adresses following problem:
'Fix a race condition where qemu finds that there are not enough virtio ring buffers available and the guest make more buffers available before qemu can enable notifications.' [0], the thread startet as 'network shutdown under heavy load' [1].
KVM already contains the fix (since February 19th, IIRC), CentOS' packages doesn't.
The RPMs can be found here:
http://www.riscworks.net/CentOS/KVM/fix-virt-io-ring-buffer-race/
does it have an upstream (redhat) bugzilla entry? it'd be better if they fix it...
Sure, but we had the problem that it constantly crashed several customer's domUs, so we had to fix it ASAP. Just wanted to make it more convenient for people that have the same problem and can _not_ wait until it's fixed upstream.
then at least and src.rpm would be useful...
Okay, I'll see when I got time to create one...
Timo
On 22/03/2010 11:20, Timo Schoeler wrote:
due to the necessity of having a patched KVM running, I build some new RPMs. However, only
kmod-kvm-83-105.27.x86_64.rpm
these sort of things would be better passed in through the centos-virt list ( http://lists.centos.org/ )
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thus Karanbir Singh spake:
On 22/03/2010 11:20, Timo Schoeler wrote:
due to the necessity of having a patched KVM running, I build some new RPMs. However, only
kmod-kvm-83-105.27.x86_64.rpm
these sort of things would be better passed in through the centos-virt list ( http://lists.centos.org/ )
Hi,
it seems dead (at least, for me):
http://lists.centos.org/pipermail/centos/2010-March/091952.html
Timo
On 22/03/2010 11:36, Timo Schoeler wrote:
it seems dead (at least, for me):
http://lists.centos.org/pipermail/centos/2010-March/091952.html
did you report that to the list-owner address ?
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thus Karanbir Singh spake:
On 22/03/2010 11:36, Timo Schoeler wrote:
it seems dead (at least, for me):
http://lists.centos.org/pipermail/centos/2010-March/091952.html
did you report that to the list-owner address ?
Nope, not yet, over the weekend I was online using a tiny Nokia E71, so... I was lazy.
Timo
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thus Karanbir Singh spake:
On 22/03/2010 11:36, Timo Schoeler wrote:
it seems dead (at least, for me):
http://lists.centos.org/pipermail/centos/2010-March/091952.html
did you report that to the list-owner address ?
Done.
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thus Timo Schoeler spake:
thus Farkas Levente spake:
On 03/22/2010 12:12 PM, Timo Schoeler wrote:
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
thus Farkas Levente spake:
On 03/22/2010 12:03 PM, Timo Schoeler wrote:
Hi list,
due to the necessity of having a patched KVM running, I build some new RPMs. However, only
kmod-kvm-83-105.27.x86_64.rpm
is important to replace the 'original' one as it's the only package that contains the patch. I didn't rename the packages, though, hopefully in order not to break the upgrade path provided to us.
The patch adresses following problem:
'Fix a race condition where qemu finds that there are not enough virtio ring buffers available and the guest make more buffers available before qemu can enable notifications.' [0], the thread startet as 'network shutdown under heavy load' [1].
KVM already contains the fix (since February 19th, IIRC), CentOS' packages doesn't.
The RPMs can be found here:
http://www.riscworks.net/CentOS/KVM/fix-virt-io-ring-buffer-race/
does it have an upstream (redhat) bugzilla entry? it'd be better if they fix it...
Sure, but we had the problem that it constantly crashed several customer's domUs, so we had to fix it ASAP. Just wanted to make it more convenient for people that have the same problem and can _not_ wait until it's fixed upstream.
then at least and src.rpm would be useful...
Okay, I'll see when I got time to create one...
Timo
Done, can be found in
http://www.riscworks.net/CentOS/KVM/fix-virt-io-ring-buffer-race/SRPM
now.
Timo
-
Farkas Levente -
Karanbir Singh -
Timo Schoeler