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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] PV DomU stopped responding, won't boot, stuck in paused state
I managed to fix my issue, it was to simply change pygrub to call
/usr/bin/python2.5 not simply /usr/bin/python. The default python on Debian
6.0 is 2.6.6 apparently.
It is concerning that the current pygrub does not properly support ZFS. My ZFS
version is 16 I believe, which is very old, so it isn't anything new. A simple
google search yields a number of users who cannot boot ZFS due to the following
error with pygrub when running 'pygrub domu.img':
Traceback (most recent call last):
File "/usr/bin/pygrub", line 669, in <module>
chosencfg = run_grub(file, entry, fs, incfg["args"])
File "/usr/bin/pygrub", line 572, in run_grub
grubcfg["kernel"] = img.kernel[1]
TypeError: 'NoneType' object is unsubscriptable
--
Mike Brancato
On Mar 7, 2012, at 4:07 PM, Mike Brancato wrote:
> Yesterday, I had a PV OpenSolaris DomU stop responding. I looked on my xen
> machine and it was in a paused state. I ended up destroying it and then
> doing xm create to bring it back up.
>
> It won't boot, and I think PyGrub is hanging. Not sure how to resolve this,
> there aren't any errors being presented in xen/xm itself. If I try 'xm
> create config.conf' it just says "using config file blah.conf<newline>" and
> nothing else. Never fails, never boots. If I drop out "ctrl-c" and look, it
> is paused with 0 run time.
>
> A few weeks ago I upgraded from Debian 5.0 to 6.0. My Xen install was
> refreshed with some updated packages, but I was already running 4.0.1 on
> Debian 5.0. But after the upgrade, everything was working fine. No changes
> to this machine since, just noticed it had stopped responding last night, but
> that DomU was running earlier in the day.
>
> Hopefully someone can help me figure out what's wrong, I'm guessing it has to
> do with pygrub since it won't even begin the boot process. That still
> doesn't explain why it stopped responding unless there was some other failure
> that caused a reboot, but this machine has normally run without incident for
> almost 3 years. It *is* and old version of OpenSolaris.
>
> Here is some info on the Dom0 and DomU.
>
> Debian 6.0 (squeeze)
> Xen 4.0.1
> My pygrub is named /usr/bin/pygrub-4.1b, I know I had to hack around with
> this in the past to get ZFS support.
>
> When I run pygrub-4.1b domu.img, I get an error now:
> Traceback (most recent call last):
> File "/usr/bin/pygrub-4.1b", line 20, in <module>
> import xen.lowlevel.xc
> ImportError: No module named xen.lowlevel.xc
>
> If I try the provided PyGrub from debian, I get:
> farnsworth:/vm/leela# xm create leela.conf
> Using config file "./leela.conf".
> Error: Boot loader didn't return any data!
>
> But the provided pygrub does pull up the grub menu with 'pygrub leela.img'.
>
> DomU:
> I pass through some physical drives to a zpool array, this machine is a
> storage server and handles SMB/CIFS.
>
> (domain
> (domid 7)
> (cpu_weight 256)
> (cpu_cap 0)
> (on_crash restart)
> (uuid blah)
> (bootloader_args -q)
> (vcpus 1)
> (name leela)
> (on_poweroff destroy)
> (on_reboot restart)
> (cpus (()))
> (description )
> (bootloader /usr/bin/pygrub-4.1b)
> (maxmem 1024)
> (memory 1024)
> (shadow_memory 0)
> (features )
> (on_xend_start ignore)
> (on_xend_stop ignore)
> (cpu_time 0.0)
> (online_vcpus 0)
> (image
> (linux
> (kernel )
> (superpages 0)
> (tsc_mode 0)
> (videoram 4)
> (pci ())
> (nomigrate 0)
> )
> )
> (status 1)
> (state --p---)
> (device
> (vif
> (bridge eth0)
> (mac blah)
> (uuid blah)
> )
> )
> (device
> (vbd
> (uuid blah)
> (bootable 1)
> (driver paravirtualised)
> (dev xvda)
> (uname file:/vm/leela/leela.img)
> (mode w)
> )
> )
> (device
> (vbd
> (uuid blah)
> (bootable 0)
> (driver paravirtualised)
> (dev xvdb)
> (uname phy:/dev/disk/by-id/scsi-SATA_SAMSUNG_blah)
> (mode w)
> )
> )
> (device
> (vbd
> (uuid blah)
> (bootable 0)
> (driver paravirtualised)
> (dev xvdc)
> (uname phy:/dev/disk/by-id/scsi-SATA_SAMSUNG_blah)
> (mode w)
> )
> )
> (device
> (vbd
> (uuid blah)
> (bootable 0)
> (driver paravirtualised)
> (dev xvdd)
> (uname phy:/dev/disk/by-id/scsi-SATA_SAMSUNG_blah)
> (mode w)
> )
> )
> )
>
> xend.log tail:
> [2012-03-07 15:38:45 1918] DEBUG (XendDomainInfo:101)
> XendDomainInfo.create(['vm', ['name', 'leela'], ['memory', 1024],
> ['on_xend_start', 'ignore'], ['on_xend_stop', 'ignore'], ['vcpus', 1],
> ['oos', 1], ['bootloader', '/usr/bin/pygrub-4.1b'], ['bootloader_args',
> '-q'], ['image', ['linux', ['videoram', 4], ['tsc_mode', 0], ['nomigrate',
> 0]]], ['s3_integrity', 1], ['device', ['vbd', ['uname',
> 'file:/vm/leela/leela.img'], ['dev', 'xvda'], ['mode', 'w']]], ['device',
> ['vbd', ['uname', 'phy:/dev/disk/by-id/scsi-SATA_SAMSUNG_blah'], ['dev',
> 'xvdb'], ['mode', 'w']]], ['device', ['vbd', ['uname',
> 'phy:/dev/disk/by-id/scsi-SATA_SAMSUNG_blah'], ['dev', 'xvdc'], ['mode',
> 'w']]], ['device', ['vbd', ['uname',
> 'phy:/dev/disk/by-id/scsi-SATA_SAMSUNG_blah'], ['dev', 'xvdd'], ['mode',
> 'w']]], ['device', ['vif', ['bridge', 'eth0'], ['mac', 'blah']]]])
> [2012-03-07 15:38:45 1918] DEBUG (XendDomainInfo:2508)
> XendDomainInfo.constructDomain
> [2012-03-07 15:38:45 1918] DEBUG (balloon:220) Balloon: 535512 KiB free; need
> 16384; done.
> [2012-03-07 15:38:45 1918] DEBUG (XendDomain:464) Adding Domain: 7
> [2012-03-07 15:38:45 1918] DEBUG (XendDomainInfo:2818)
> XendDomainInfo.initDomain: 7 256
> [2012-03-07 15:38:45 5169] DEBUG (XendBootloader:113) Launching bootloader as
> ['/usr/bin/pygrub-4.1b', '--output=/var/run/xend/boot/xenbl.20421', '-q',
> '/vm/leela/leela.img'].
>
> --
> Mike Brancato
>
>
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