EDH - Manuel Rios Fernandez <mriosfer@xxxxxxxxxxxxxxxx> 于2019年5月17日周五 下午3:23写道： > > Did you check your KVM host RAM usage? > > > > We saw this on host very very loaded with overcommit in RAM causes a random crash of VM. > > > > As you said for solve must be remounted externaly and fsck. You can prevent it disabled ceph cache at Openstack Nova host. But your VM’s are going get less performance. > > > > Whats you Ceph & Openstack version? > > > > Regards > > > > > > De: ceph-users <ceph-users-bounces@xxxxxxxxxxxxxx> En nombre de ?? > Enviado el: viernes, 17 de mayo de 2019 9:01 > Para: ceph-users <ceph-users@xxxxxxxxxxxxxx> > Asunto: openstack with ceph rbd vms IO/erros > > > > hi: > > I hava a openstack cluster with a ceph cluster ，use rbd，ceph cluster use ssd pool tier. > > > > some vm on openstack sometimes crashed in two case . > > > > 1. become readonly filesystem. after reboot ,it work fine again. > > 2. IO errors . I must repair the file system by fsck. thenreboot , it work fine again. > > > > I do not know if this is ceph bugs or kvm bugs. > > > Do you have set 'osd_enable_op_tracker=true' and what the value of ' osd_op_complaint_time' ? If you set above 2 configure items, did you cluster report 'slow request'? > I need some ideas to resolv this , Anyone can help me ? > > Look forward to your reply > > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com -- Thank you! HuangJun _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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