On 02/05/2015 07:44 AM, Udo Lembke wrote:
Hi all,
is there any command to flush the rbd cache like the
echo 3 /proc/sys/vm/drop_caches for the os cache?
librbd exposes it as rbd_invalidate_cache(), and qemu uses it
internally, but I don't think you can trigger that via any user-facing
qemu
Hi Dan,
I mean qemu-kvm, also librbd.
But how I can kvm told to flush the buffer?
Udo
On 05.02.2015 07:59, Dan Mick wrote:
On 02/04/2015 10:44 PM, Udo Lembke wrote:
Hi all,
is there any command to flush the rbd cache like the
echo 3 /proc/sys/vm/drop_caches for the os cache?
Udo
Do you
On 02/04/2015 10:44 PM, Udo Lembke wrote:
Hi all,
is there any command to flush the rbd cache like the
echo 3 /proc/sys/vm/drop_caches for the os cache?
Udo
Do you mean the kernel rbd or librbd? The latter responds to flush
requests from the hypervisor. The former...I'm not sure it has a
Hi Josh,
thanks for the info.
detach/reattach schould be fine for me, because it's only for
performance testing.
#2468 would be fine of course.
Udo
On 05.02.2015 08:02, Josh Durgin wrote:
On 02/05/2015 07:44 AM, Udo Lembke wrote:
Hi all,
is there any command to flush the rbd cache like the
Hi all,
is there any command to flush the rbd cache like the
echo 3 /proc/sys/vm/drop_caches for the os cache?
Udo
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I don't know the details well; I know the device itself supports the
block-device-level cache-flush commands (I know there's a SCSI-specific
one but I don't know offhand if there's a device generic one) so the
guest OS can, and does, request flushing. I can't remember if there's
also a qemu
