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On Oct 23, 2020, at 14:03, Kumar, Amit <<a href="mailto:ahkumar@mail.smu.edu" class="">ahkumar@mail.smu.edu</a>> wrote:<br class="">
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Dear All,<o:p class=""></o:p></div>
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Quick question, can I get away by setting “zfs set atime=off on_all_my_voulmes_mgt_mdt_and_osts” ? I ask this as it is noted to be performance boosting tip with the assumption filesystems(Lustre) handles all access times?</div>
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<div>You don't really need atime enabled on the OSTs, but I also don't think "atime=off" will make any difference. That is a VFS/ZPL level option, and Lustre osd-zfs doesn't use any of the ZPL code, but rather handles atime internally.</div>
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<div>Cheers, Andreas</div>
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<div>Andreas Dilger</div>
<div>Principal Lustre Architect</div>
<div>Whamcloud</div>
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