[ovirt-users] Re: i/o wait and slow system

Thank you. Reboot of the engine and afterwards the backup server helped :-) Before the change -> 53 minutes for 10% and the restore broke at 98% ... - [2020-08-26:20:45:30] Restore Imaging: 1/1 - 10% Imaging in progress.... - [2020-08-26:20:41:22] Restore Imaging: 1/1 - 9% Imaging in progress... - [2020-08-26:20:37:33] Restore Imaging: 1/1 - 8% Imaging in progress. - [2020-08-26:20:32:04] Restore Imaging: 1/1 - 7% Imaging in progress... - [2020-08-26:20:25:38] Restore Imaging: 1/1 - 6% Imaging in progress... - [2020-08-26:20:21:34] Restore Imaging: 1/1 - 5% Imaging in progress... - [2020-08-26:20:18:57] Restore Imaging: 1/1 - 3% Imaging in progress. - [2020-08-26:20:03:15] Restore Imaging: 1/1 - 2% Imaging in progress.... - [2020-08-26:19:57:10] Restore Imaging: 1/1 - 1% Imaging in progress..... - [2020-08-26:19:53:20] Restore Imaging: 1/1 - 0% Imaging in progress........... - [2020-08-26:19:53:17] Restore Imaging: 1/1 - 0% Started Imaging Disk1.img.lzo to /dev/sdb After the change -> 10 minutes for 10% - [2020-08-27:22:08:59] Restore Imaging: 1/1 - 10% Imaging in progress... - [2020-08-27:22:08:02] Restore Imaging: 1/1 - 9% Imaging in progress... - [2020-08-27:22:07:05] Restore Imaging: 1/1 - 8% Imaging in progress... - [2020-08-27:22:05:34] Restore Imaging: 1/1 - 7% Imaging in progress... - [2020-08-27:22:04:43] Restore Imaging: 1/1 - 6% Imaging in progress...... - [2020-08-27:22:03:34] Restore Imaging: 1/1 - 5% Imaging in progress.......... - [2020-08-27:22:02:27] Restore Imaging: 1/1 - 4% Imaging in progress............. - [2020-08-27:22:01:39] Restore Imaging: 1/1 - 3% Imaging in progress........ - [2020-08-27:22:00:16] Restore Imaging: 1/1 - 2% Imaging in progress........... - [2020-08-27:21:59:24] Restore Imaging: 1/1 - 1% Imaging in progress........ - [2020-08-27:21:58:16] Restore Imaging: 1/1 - 0% Imaging in progress.......... - [2020-08-27:21:58:13] Restore Imaging: 1/1 - 0% Started Imaging Disk1.img.lzo to /dev/sdb Should I revert some of my previous changes? Reduce the write window size? - gluster volume set vmstore performance.read-ahead on - gluster volume set vmstore performance.stat-prefetch on - gluster volume set vmstore performance.write-behind-window-size 64MB - gluster volume set vmstore performance.flush-behind on - gluster volume set vmstore cluster.choose-local on Now I will reboot the other VMs and go on with moving from thin provisioned disk to preallocated.