On Tue, Nov 18, 2014 at 8:17 PM, Alexandre DERUMIER <aderum...@odiso.com> wrote:
> >>What is your vm guest os ? kernel version ? > >> > >>Guest OS can be Windows (any) and Linux (any version). > > I ask the question because old windows virtio driver don't send flush > correctly, > > and some linux kernel too (it's really safe since 2.6.32 - 2.6.33 if I > remember, depend of filesystem, virtio driver -lvm-mdadm-dm version ..) > http://monolight.cc/2011/06/barriers-caches-filesystems/ > > >>2. It is often happen to Linux VM swap space. > mmm,good point, I don't known how flush is working with swap graylog2 was installed on Ubuntu 14.04 (virtio as I remember, not checked with ide) However: 1) moving to IDE didn't help for Windows 2) moving to IDE can't help for swap 3) I don't remember if I tried ext4 in combination with ide because ext4 didn't produce any issues before I installed graylog2 recently. However there were many issues with ext3 (no barriers by default) Stanislav
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