This bug was filed against a series that is no longer supported and so
is being marked as Won't Fix. If this issue still exists in a supported
series, please file a new bug.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Stefan,
The ec2 kernels already have xen-netfront and xen-blkfront compiled in.
If xen-platform-pci was also compiled in, or included in the initramfs,
then the HW emulation will be unplugged properly and you'll switch over
to the PV drivers. The following results in PV drivers for the root
If what Matt says is true, shouldn't this be incorporated into the next
release of the Ubuntu HVM images? I think people only notice this if
they are running applications that get upset when there is a long pause
like HBase/Zookeeper. In our case it notices that there is a long pause
and considers
We have been having ongoing issues with Ubuntu 11.04 HVM instances on
AWS EC2 having ATA errors causing long timeouts. AWS engineering is now
saying its due / related to this bug. Seems hard to believe, but I
thought you might be interested.
See:
Whether using the pv devices or the emulated ones should hardy make a
difference with respect of the timeouts and data loss which is reported
here. It has a performance benefit for the communication between the
instance and the Xen host, though. And we are about to release kernel
updates to have
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Title:
xen_emul_unplug=unnecessary on kernel cmdline is required in ec2 hvm
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** Attachment added: console after initial boot of
ubuntu-natty-daily-amd64-server-20110116
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/704022/+attachment/1796954/+files/first-boot.txt
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I modified grub to have an additional boot option called 'CUSTOM-TEST'
and booted into that.
$ ent=Ubuntu, with Linux $(uname -r)
$ cust=CUSTOM-TEST
$ sed -n -e s/${ent}/${cust}/ \
-e /^menuentry '${cust}'/,/}/p \
/boot/grub/grub.cfg | sudo tee /boot/grub/custom.cfg
$ sudo sed -i
** Attachment added: console after reboot with argument
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/704022/+attachment/1796956/+files/restart-with-unplug-arg.txt
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** Changed in: linux (Ubuntu)
Importance: Undecided = Medium
** Changed in: linux (Ubuntu)
Status: New = Confirmed
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