Hi !
I have problematic VM (Ubuntu 16.04 LTS) which randomly freezes about each 2 - 3 weeks at weekends (when load is close to zero).
No updates or kernel upgrades help.
Freeze is not detected by oVirt watchdog and VM is not automatically restarted (oVirt is virtualization management program atop of KVM).
Since it happens only on weekends, I suspect some weekly cron job may cause this.
Ubuntu 16.04 LTS is installed on qcow2 disk image (thin provision).
is it possible that fstrim (which discards / trims unused blocks) is a source of this problem ?
I'm using virtio-SCSI, Ubuntu thin provision disk formatted as ext4 boot + ext4 root + swap.
Disk image on ext4 RAID 1 (2 x hard drives, not SSD, HP SmartArray p410i hardware RAID card).
Thanks in advance.
I have problematic VM (Ubuntu 16.04 LTS) which randomly freezes about each 2 - 3 weeks at weekends (when load is close to zero).
No updates or kernel upgrades help.
Freeze is not detected by oVirt watchdog and VM is not automatically restarted (oVirt is virtualization management program atop of KVM).
Since it happens only on weekends, I suspect some weekly cron job may cause this.
Ubuntu 16.04 LTS is installed on qcow2 disk image (thin provision).
is it possible that fstrim (which discards / trims unused blocks) is a source of this problem ?
I'm using virtio-SCSI, Ubuntu thin provision disk formatted as ext4 boot + ext4 root + swap.
Disk image on ext4 RAID 1 (2 x hard drives, not SSD, HP SmartArray p410i hardware RAID card).
Thanks in advance.