Actually, this is unlikely because there was locking for image fetching already. This patch only adds it for case when several compute processes share same $instances_dir. - disk full really might be the case. Simple check is to extend available space and try to reproduce it again.
2012/9/25 Wangpan <[email protected]> > ** > Thanks for your clue. > yes, the occured condition of my issue is the same as BUG *1014227*, but > the difference is that my instance directory is NOT shared between compute > nodes, > the instances' images are saved in local disk on compute nodes. > I believe the bug Boris found may occur in NOT shared storage circumstance > as mine, and my issue may be resloved by this patch which adds a lock to > cache image method. > Thanks again. > > 2012-09-25 > ------------------------------ > Wangpan > ------------------------------ > *发件人：*Boris Filippov > *发送时间：*2012-09-24 19:59 > *主题：*Re: [Openstack] [Nova] Got 'qemu-img: error while writing sector > 634880: Input/output error' in _create_image > *收件人：*"Razique Mahroua"<[email protected]> > *抄送：*"Wangpan"<[email protected]>,"openstack"< > [email protected]> > > Your instance directory is shared between compute nodes? > Similar issue was fixed for folsom-rc1 > https://review.openstack.org/#/c/12024/ > https://bugs.launchpad.net/nova/+bug/1014227 > > > 2012/9/24 Razique Mahroua <[email protected]> > >> Here is what I found >> http://comments.gmane.org/gmane.comp.emulators.qemu/153254 >> http://osdir.com/ml/qemu-devel/2012-05/msg04234.html >> >> What do you think ? >> >> *Nuage & Co - Razique Mahroua** * >> [email protected] >> >> >> Le 24 sept. 2012 à 10:43, Wangpan <[email protected]> a écrit : >> >> qemu-img check -f qcow2 test.qcow2 >> No errors were found on the image. >> >> 2012-09-24 >> ------------------------------ >> Wangpan >> ------------------------------ >> *发件人：*Razique Mahroua >> *发送时间：*2012-09-24 16:30 >> *主题：*Re: Re: [Openstack] [Nova] Got 'qemu-img: error while writing >> sector 634880: Input/output error' in _create_image >> *收件人：*"Wangpan"<[email protected]> >> *抄送：*"openstack"<[email protected]> >> >> hi, >> what about a >> qemu-img check -f qcow2 test.qcow2 >> >> >> *Nuage & Co - Razique Mahroua** * >> [email protected] >> >> <NUAGECO-LOGO-Fblan_petit(1).jpg> >> >> Le 24 sept. 2012 à 10:19, "Wangpan"<[email protected]> a écrit >> : >> >> Thanks for your attention! >> >> - disk full ----# I believe there is enough space, because I have tried >> to boot serveral instances after this error with the same image, they are >> all booted successfully. >> - permission issues ----# Not this reason, too. explain as above. >> >> I still believe this is a race problem, if we convert to image from qcow2 >> to raw at a short interval, one of the convertion may fail, >> I have verified this by running two same commands continuously such as: >> qemu-img convert -f qcow2 -O raw test.qcow2 test.part & >> and one of them give me the same error: >> qemu-img: error while writing sector 1052672: Input/output error >> >> >> >> _______________________________________________ >> Mailing list: https://launchpad.net/~openstack >> Post to : [email protected] >> Unsubscribe : https://launchpad.net/~openstack >> More help : https://help.launchpad.net/ListHelp >> >> >
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