[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] Error: Device 2049 (vbd) could not be connected. Backend device not found.
Joe Warren-Meeks wrote: > > On 27 Apr 2006, at 14:43, Joe Warren-Meeks wrote: > > Hey guys, > >>> I've installed xen 3 and xen-tools on my ubuntu server and all seems >>> well, until I try to start a client domain. (running on Linux >>> xenserver 2.6.12.6-xen #1 SMP Wed Feb 1 21:23:17 UTC 2006 i686 >>> GNU/Linux) >> >> >> Bit of a follow-up. If I try to start the DomU, it initally errors as >> so: >> >> root@xenserver:/etc/xen# xm create -c squid1.cfg >> Using config file "squid1.cfg". >> Error: Device 2049 (vbd) could not be connected. Backend device not >> found. >> >> and then shows up as paused in 'xm list' >> >> If I then attach a console to it, then unpause I see the following >> error at the end: >> >> VFS: Cannot open root device "sda1" or unknown-block(0,0) >> Please append a correct "root=" boot option >> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown- >> block(0,0) >> >> I've tried adding /dev/ nodes using MAKEDEV in both the Dom0 and DomU >> and tried changing sda to hda, to no avail. >> >> Anyone got a pointer to where I can start looking? > > > As a futher follow up, if I use xen-create-image to create a new domU, > this completes fine and then starts the image successfully! I can then > go and start all the other images and all is fine. > > Once I've halted them all and rebooted the server itself, it all stops > working again. > > Anyone got any pointers? This is getting quite frustrating. > I'm getting exactly the same error (also using Ubuntu). I just tried mounting and unmounting the one of the images and that seems to get everything working - till the next reboot. mount -o loop /vserver/images/vmNMS.img /vserver/vm_base/ umount /vserver/vm_base/ Any idea why this happens? I've also been pulling my hair out the past couple of days. Regards, Abi _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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