Public bug reported:
Binary package hint: xen-source-2.6.17
When I start my second domU using xm restore, I get a kernel oops in
dom0 and the machine crashes. I will attach a screenshot of the oops
message, made with a digital camera.
My setup is:
Intel G845GVSR motherboard
2.8GHz Celeron
512Mb RAM
Two PATA hard disks and a cd/dvd reader/writer
xen-image-xen0-2.6.17-6-generic-xen0 2.6.17-6
xen-hypervisor-3.0-i386 3.0.3-0ubuntu6
I have:
dom0 - feisty, no memory limits set
domU "lalonde" - sarge install which is also capable of booting native (with a
different kernel), custom 2.6.12 kernel for use under Xen;
memory=64;
disk =
["phy:/dev/hda5,/dev/hda5,w","phy:/dev/hda3,/dev/hda3,w","phy:/dev/hdd,/dev/hdd,w","file:/root/lalonde/swapfile,/dev/hda6,w"];
vif =
["bridge=none,mac=00:16:3e:34:1d:d0,ip=172.18.45.97,script=/etc/xen/scripts/vif-route"]
Booted each time the dom0 boots, and shut down when it shuts down.
domU "adt_feisty" - feisty, made with debootstrap by adt-xenlvm-setup, which
creates an image using xm save.
memory 256 initially, but shrunk to 32 before save. savefile says (memory 32)
... (maxmem 256).
disk = [ "phy:adt-xenlvm/adt_feisty_fs,hda1,w" ] (adt_feisty_fs is a
devmapper snapshot device made by adt-xenlvm-with-testbed and dmsetup)
vif = [
"bridge=none,mac=00:16:3e:7c:aa:7f,ip=172.18.45.67,script=/etc/xen/scripts/vif-route-adt"
]
When I run adt-xenlvm-with-testbed, it does some lvm shuffling and then
calls xm restore. xm restore causes dom0 to oops.
I think my machine is very short of memory for this operation. Previously the
"lalonde" domU had 128Mb and then I got this error in /var/log/xen/xend.log,
when I tried to xm restore the "adt_feisty" savefile:
VmError: I need 270336 KiB, but dom0_min_mem is 131072 and shrinking to 131072
KiB would leave only 266524 KiB free.
** Affects: xen-source-2.6.17 (Ubuntu)
Importance: Undecided
Status: Unconfirmed
--
dom0 oops crash on xm restore when memory is short
https://launchpad.net/bugs/90161
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