On 15/03/16 22:21, Peter Brouwer wrote:
PArtitions is used in the swift context, i.e. the partitions scheme the ring-builder uses. I'm assuming a whole physical disk is used, i.e. filesystem created on a disk using the whole physical disk. So the ring structure provides a reference to a swift partition and a disk location, right? What happens if the disk it is pointing to is full, does swift returns an error to the app/client or does it try a re-lookup in an attempt to find space elsewhere?
Ah sorry, I see you are in fact (correctly) talking about swift partitions and *not* disk partitions (confusing in your initial email).
So you are essentially saying what happens when the particular target disk is full. Swift tries to write objects or containers to a sufficient number of storage server devices (the exact number or proportion may depend on the schema defined for the specific profile - replicated or erasure...I haven't checked recent code ...John will know I think)...however if enough copies (or segments) are written then all is ok (so *some* disks can be full), however eventually too many will be full and you will get an error [1].
regards Mark [1] tested this with 4 servers and 8 devices. _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : [email protected] Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
