> > ceph use O_DIRECT+O_DYNC to write to the journal of osds. > Is this done inside KVM process? If so then KVM keeps buffer for this > O_DIRECT writing. Therefore if multiple threads can access (and change) > this buffer at the same time then the similar issue can happen in theory.
It only happens if the underlying device is mdraid or drbd. A OSD is always a single device, so this would not be a problem. _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
