FYI.... ---------- Forwarded message --------- From: Gk Gk <ygk.kmr@gmail.com> Date: Wed, Dec 21, 2022 at 9:46 PM Subject: Re: Need help To: Daniel P. Berrangé <berrange@redhat.com> I have just created a new vm and rechecked the disk stats. This time around too, they seem to be different as shown below:

From libvirt python library:

disk_name=sda read_req=10501,read_bytes=263819776,write_req=1933,write_bytes=82269184 --- So the write_bytes from above amounted to 78 MB approx. But from within the vm : --- root@sample2:~# iostat -p sda -h Linux 4.15.0-101-generic (sample2) 12/21/2022 _x86_64_ (1 CPU) avg-cpu: %user %nice %system %iowait %steal %idle 1.9% 0.0% 1.3% 0.4% 0.0% 96.4% Device tps kB_read/s kB_wrtn/s kB_read kB_wrtn sda 40.45 643.6k 21.2M 217.5M 7.2G sda1 40.04 637.6k 21.2M 215.5M 7.2G ---- 7.2 G is far from 78 MB. Am I doing wrong anywhere ? Btw, I did not reboot the new vm this time On Wed, Dec 21, 2022 at 9:30 PM Daniel P. Berrangé <berrange@redhat.com> wrote:

On Wed, Dec 21, 2022 at 09:26:14PM +0530, Gk Gk wrote:

...

Thanks Daniel for the response.

I am wondering what exactly is the difference in the process for a soft and hard reboot in the context of a kvm guest ? Can you throw some light here please ?

KVM will always do a soft reboot, where QEMU keeps running.

With regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|