On Mon, Feb 01, 2021 at 07:18:24PM +0200, Nir Soffer wrote:
Assuming we could use:
io_timeout = 10 renewal_retries = 8
The worst case would be:
00 sanlock renewal succeeds 19 storage fails 20 sanlock try to renew lease 1/7 (timeout=10) 30 sanlock renewal timeout 40 sanlock try to renew lease 2/7 (timeout=10) 50 sanlock renewal timeout 60 sanlock try to renew lease 3/7 (timeout=10) 70 sanlock renewal timeout 80 sanlock try to renew lease 4/7 (timeout=10) 90 sanlock renewal timeout 100 sanlock try to renew lease 5/7 (timeout=10) 110 sanlock renewal timeout 120 sanlock try to renew lease 6/7 (timeout=10) 130 sanlock renewal timeout 139 storage is back 140 sanlock try to renew lease 7/7 (timeout=10) 140 sanlock renewal succeeds
David, what do you think?
I wish I could say, it would require some careful study to know how feasible it is. The timings are intricate and fundamental to correctness of the algorithm. Dave