Hi, client_force_lazyio only works for ceph-fuse and libcephfs: https://github.com/ceph/ceph/pull/26976/files You can use the ioctl to enable per file with the kernel mount, but you might run into the same problem we did: https://tracker.ceph.com/issues/44166 Please share if it works for you. Cheers, Dan On Tue, Jun 8, 2021 at 8:16 AM opengers <zijian1012@xxxxxxxxx> wrote: > > ceph: 14.2.x > kernel: 4.15 > > In cephfs, due to the need for cache consistency, When a client is > executing buffer IO, another client will hang when reading and writing the > same file > > It seems that lazyio can solve this problem, lazyio allows multiple clients > to execute buffer IO at the same time(relax consistency), But I am not sure > how to enable lazyio under the kernel mount, the test found that the > "client_force_lazyio" parameter does not work > > My final requirement is to use lazyio to implement multiple clients to read > and write the same file(buffer IO mode) > > Can someone explain how to enable lazyio under kcephfs, thanks > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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