Hi, I was wondering...
In Ceph/Libvirt docs only cachmodes writetrough and writeback are discussed. My clients's disks are all set to writeback in the libvirt client xml-definition. For a backup operation, I notice a severe lag on one of my VM's. Such a backup operation that takes 1 to 2 hours (on a same machine but) on local LVM storage, takes on a ceph storage 6 hours. Though I have to say that the cachemode on the local LVM storage is set on directsync. => So what if I played around with other cachemodes? Will it make a difference? I'm trying now cachemode 'unsafe' so tonight I should measure the difference if there is any. Input will be greatly appreciated. Greetings, Dominique. _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
