On 02/02/2016 04:32 PM, Christian Boltz wrote:
Hello,
Am Montag, 25. Januar 2016, 08:30:23 CET schrieb Matthias G. Eckermann:
subvolumes such as /var/lib/libvirt should be marked as "NoCOW", to reduce fragmentation and metadata overhead. If this is not the case in Tumbleweed yet, I suggest to open a bugreport (you can check with "lsattr -a /var/lib/libvirt").
# lsattr -a /var/lib/libvirt ---------------- /var/lib/libvirt/. ---------------- /var/lib/libvirt/.. ---------------C /var/lib/libvirt/images ---------------- /var/lib/libvirt/boot ---------------- /var/lib/libvirt/filesystems ---------------- /var/lib/libvirt/uml ---------------- /var/lib/libvirt/dnsmasq ---------------- /var/lib/libvirt/network ---------------- /var/lib/libvirt/libxl ---------------- /var/lib/libvirt/qemu ---------------- /var/lib/libvirt/lxc
The initial installation of this Tumbleweed was about 3 months ago.
So only the 'images' subdirectory is NoCOW.
I don't know if the other subdirectories would also benefit from NoCOW because I don't use libvirt. Well, actually I had some trouble to get started (might be my bug finding luck again), and no time to dig deeper.
Regards,
Christian Boltz
I doubt it will make much of a difference for the other /var/lib/libvirt subdirectories because images is the one which has very high write operations to disk (since VM files will constantly change as it runs) so its not really useful to have CoW enabled. -- Regards, Uzair Shamim -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org