Whamcloud Community JIRA https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 [LU-4160] Default HSM paramters need to be updated https://jira.whamcloud.com/browse/LU-4160 Lustre <p>Currently, the default HSM default parameters, when HSM is enabled, are: </p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre># lctl get_param mdt.scratch-MDT0000.hsm_control mdt.scratch-MDT0000.hsm_control=enabled # lctl get_param mdt.scratch-MDT0000.hsm.actions # lctl get_param mdt.scratch-MDT0000.hsm.agents mdt.scratch-MDT0000.hsm.agents= uuid=181c8885-24a1-2d51-0b7e-3b986fff7a93 archive_id=1 requests=[current:0 ok:6917 errors:0] # lctl get_param mdt.scratch-MDT0000.hsm.default_archive_id mdt.scratch-MDT0000.hsm.default_archive_id=3 # lctl get_param mdt.scratch-MDT0000.hsm.grace_delay mdt.scratch-MDT0000.hsm.grace_delay=60 # lctl get_param mdt.scratch-MDT0000.hsm.loop_period mdt.scratch-MDT0000.hsm.loop_period=10 # lctl get_param mdt.scratch-MDT0000.hsm.max_requests mdt.scratch-MDT0000.hsm.max_requests=3 # lctl get_param mdt.scratch-MDT0000.hsm.policy mdt.scratch-MDT0000.hsm.policy=NonBlockingRestore [NoRetryAction] # lctl get_param mdt.scratch-MDT0000.hsm.active_requests # lctl get_param mdt.scratch-MDT0000.hsm.active_request_timeout mdt.scratch-MDT0000.hsm.active_request_timeout=3600 </pre> </div></div> <p>The hsm.max_requests value of 3 differs from what is documented in the HSM test plan; "10 x Agent count". Thus, the default value of hsm.max_requests should be changed.</p> <p>From the documentation, max_requests is a per coordinator value. If there are two coordinators (MDTs), each agents will never have to handle more than 2 x max_requests requests.</p> OpenSFS cluster with RHEL6 with combined MGS/MDS, single OSS with two OSTs, four Lustre 2.5 (Build #2) clients; one HSM Agent + client, one with robinhood/db running and two Lustre clients. LU-4160 Default HSM paramters need to be updated Improvement Minor Open Unresolved WC Triage James Nunez Mon, 28 Oct 2013 18:52:17 +0000 Mon, 28 Oct 2013 18:59:22 +0000 Lustre 2.5.0 Lustre 2.6.0 Lustre 2.5.1 0 10 Development Rank 1|hzw713: Rank (Obsolete) 11283