Re: [ovirt-users] moving disk failed.. remained locked

On Thu, Feb 23, 2017 at 08:11:50PM +0200, Nir Soffer wrote: Sorry for copying, but I think I explained it better then than I could now! (I need to include this somewhere in the man page.) commit 6313c709722b3ba63234a75d1651a160bf1728ee Author: David Teigland <teigland(a)redhat.com&gt; Date: Wed Mar 9 11:58:21 2016 -0600 sanlock: renewal history Keep a history of read and write latencies for a lockspace. The times are measured for io in delta lease renewal (each delta lease renewal includes one read and one write). For each successful renewal, a record is saved that includes: - the timestamp written in the delta lease by the renewal - the time in milliseconds taken by the delta lease read - the time in milliseconds taken by the delta lease write Also counted and recorded are the number io timeouts and other io errors that occur between successful renewals. Two consecutive successful renewals would be recorded as: timestamp=5332 read_ms=482 write_ms=5525 next_timeouts=0 next_errors=0 timestamp=5353 read_ms=99 write_ms=3161 next_timeouts=0 next_errors=0 timestamp is the value written into the delta lease during that renewal. read_ms/write_ms are the milliseconds taken for the renewal read/write ios. next_timeouts are the number of io timeouts that occured after the renewal recorded on that line and before the next successful renewal on the following line. next_errors are the number of io errors (not timeouts) that occured after renewal recorded on that line and before the next successful renewal on the following line. The command 'sanlock client renewal -s lockspace_name' reports the full history of renewals saved by sanlock, which by default is 180 records, about 1 hour of history when using a 20 second renewal interval for a 10 second io timeout. (A --summary option could be added to calculate and report averages over a selected period of the history.)