Re: [Xen-users] HVM crash with raw_aio_remove

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Wed, Oct 28, 2009 at 02:56:06PM +0100, Marco Cintolesi wrote:
> Marco Cintolesi ha scritto:
> >Hi All
> >Three days ago we started to see some problems on one of hour XEN hosts:
> >The server is a Centos 5.3 with xen 3.4.1 from Gitco rep.
> >
> >sometimes some domains (win 2k3 server) crashes with this messages from 
> >xend log:
> >device model failure: pid 17081: malfunctioning (closed sentinel), 
> >killed; see /var/log/xen/qemu-dm-xxx.log
> >
> >in the qemu log the last line is:
> >raw_aio_remove: aio request not found!
> >
> >the domain config file is:
> >
> >name = "abc"
> >kernel = "/usr/lib/xen/boot/hvmloader"
> >builder = "hvm"
> >device_model = "/usr/lib64/xen/bin/qemu-dm"
> >disk = 
> >["phy:/dev/disk/by-path/ip-10.20.30.1:3260-iscsi-vsp:1070-lun-1,hda,w","tap:aio:/opt/vservers/isos/rescue,hdc:cdrom,r"]
> > 
> >
> >memory = 2048
> >maxmem = 2048
> >vcpus = 4
> >cpu_weight = 1
> >acpi = 1
> >apic = 1
> >vif = [ "mac=00:16:3e:c1:a2:a3" ]
> >boot = "c"
> >vnc = 1
> >vncdisplay = 111
> >vncpasswd = "1234"
> >keymap = "it"
> >usbdevice = "tablet"
> >on_poweroff = 'destroy'
> >on_reboot = 'restart'
> >on_crash = 'restart'
> >
> >
> >What can i check ?
> >
> >Thanks
> >Marco
> >
> >
> >_______________________________________________
> >Xen-users mailing list
> >Xen-users@xxxxxxxxxxxxxxxxxxx
> >http://lists.xensource.com/xen-users
> 
> Hi,
> Some news...... rolled back the machine to Xen 3.3.1,
> problem disappear, maybe the 3.4.1 is not so stable at the moment, or 
> maybe its a problem with qemu......
> 
> Anyone knows something about that ?
> I see that in the bugzilla there's some qemu-related bugs opened in the 
> 2007 and never closed (!!!)
> 

Xen 3.4.1 has a known bug in qemu-dm which causes HVM guests leak memory
on IO operations and/or crash.

There are patches available.. in xen-devel archives.

-- Pasi


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