Package: qemu-system-x86
Version: 1:2.1+dfsg-12+deb8u4
Severity: important
Dear Maintainer,
*** Reporter, please consider answering these questions, where appropriate ***
* What led up to the situation?
I have ~25 Debian servers running at various clients. They all run identical
hardware with varying amounts of memory.
The machines virtualize several Windows servers and several Linux servers.
Several of these customers should probably get additional physical servers or
more memory because they are adding more VMs, but they don't want to just yet.
Consequently several of these systems are tight on memory.
On systems where memory starts to get tight (say under ~1 GByte on a 48 Gbyte
system), one or more guests will randomly die with no information printed in
syslog. This usually occurs once or twice during a 24-hour period.
It doesn't seem to matter if the guest is running virtio drivers or SATA/IDE
drivers.
* What exactly did you do (or not do) that was effective (or
ineffective)?
Running 'echo 3 > /proc/sys/vm/drop_caches' from cron every minute seems to
delay the issue from a few times per day to a few times every 3-4 days.
* What was the outcome of this action?
* What outcome did you expect instead?
If the host was truly out of memory, I would expect to see OOM-killer picking a
process to die, or possibly errors from libvirt/qemu about servers getting
killed.
*** End of the template - remove these template lines ***
-- System Information:
Debian Release: 8.2
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 3.16.0-4-amd64 (SMP w/16 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages qemu-system-x86 depends on:
ii ipxe-qemu 1.0.0+git-20141004.86285d1-1
ii libaio1 0.3.110-1
ii libasound2 1.0.28-1
ii libbluetooth3 5.23-2+b1
ii libbrlapi0.6 5.2~20141018-5
ii libc6 2.19-18+deb8u1
ii libcurl3-gnutls 7.38.0-4+deb8u2
ii libfdt1 1.4.0+dfsg-1
ii libgcc1 1:4.9.2-10
ii libglib2.0-0 2.42.1-1
ii libgnutls-deb0-28 3.3.8-6+deb8u3
ii libiscsi2 1.12.0-2
ii libjpeg62-turbo 1:1.3.1-12
ii libncurses5 5.9+20140913-1+b1
ii libpixman-1-0 0.32.6-3
ii libpng12-0 1.2.50-2+deb8u1
ii libpulse0 5.0-13
ii librados2 0.80.7-2
ii librbd1 0.80.7-2
ii libsasl2-2 2.1.26.dfsg1-13+deb8u1
ii libsdl1.2debian 1.2.15-10+b1
ii libseccomp2 2.1.1-1
ii libspice-server1 0.12.5-1+deb8u2
ii libssh2-1 1.4.3-4.1
ii libtinfo5 5.9+20140913-1+b1
ii libusb-1.0-0 2:1.0.19-1
ii libusbredirparser1 0.7-1
ii libuuid1 2.25.2-6
ii libvdeplug2 2.3.2+r586-1
ii libx11-6 2:1.6.2-3
ii libxen-4.4 4.4.1-9+deb8u3
ii libxenstore3.0 4.4.1-9+deb8u3
ii qemu-system-common 1:2.1+dfsg-12+deb8u4
ii seabios 1.7.5-1
ii zlib1g 1:1.2.8.dfsg-2+b1
Versions of packages qemu-system-x86 recommends:
ii qemu-utils 1:2.1+dfsg-12+deb8u4
Versions of packages qemu-system-x86 suggests:
ii kmod 18-3
pn ovmf <none>
ii samba 2:4.1.17+dfsg-2
pn sgabios <none>
pn vde2 <none>
-- no debconf information
