Hi all,
On 31.03.21 11:32, Michael Hierweck wrote:
Hi all,
with DRBD 9.0.25 we experience problem with the syncer rate.
Using default settings our IO system gets overloaded, especially when multiple resources are be
resynced in parallel.
Neither
drbdadm peer-device-options --c-plan-ahead=X --c-max-sync-rate=Y <res>
drbdadm peer-device-options --c-plan-ahead=0 --resync-rate=Y <res>
seem take any effect even when setting Y to very low values, such as 1M.
we ware able to slow down DRBD sync by applying:
drbdadm peer-device-options --c-plan-ahead=0 --resync-rate=100 <res>
(Yes, 100, not 100M.)
Syslog:
Resync done (total 1212 sec; paused 0 sec; 43256 K/sec)
I cannot explain how this setting fits with the result.
Thanks in advance,
Michael
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