Hi Adrian , Thanks for your explanation ...
About Q2 , manifest question Is there any audit mechanism to delete segments of failure uploading object? What if the uploading procedure is been interrupted by user . As you said , I think the segments still available for accessing . On the other hand , it means that those segmented objects will keep on disk in object-server , even though the uploading failure is caused by user him self. Is there any approach to remove those segmented objects? or it might waste some disk space. Thanks 2012/6/17 Adrian Smith <adr...@17od.com> > > Q1: Where's the metadata of an object ? > It's stored in extended attributes on the filesystem itself. This is > reason XFS (or other filesystem supporting extended attributes) is > required. > > > Could I find the value? > Sure. You just need some way of a) identifying the object on disk and, > b) a means of querying the extended metadata (using for example the > python xattrs package). > > > Q2: What if a large object be interrupted during upload , will the > manifest objects be deleted? > Large objects (i.e. those > 5Gb) must be split up client-side and the > segments uploaded individually. When all the segments are uploaded the > manifest must then be created by the client. What I'm trying to get at > is that each segment and even the manifest are completely independent > objects. A failure during the upload of any one segment has no impact > on other segments or the manifest. > > Adrian > > > On 16 June 2012 09:53, Kuo Hugo <tonyt...@gmail.com> wrote: > > Hi folks , > > > > Q1: > > Where's the metadata of an object ? > > For example the "X-Object-Manifest". Does it store in inode ? > > I did not see the matadata "X-Object=Manifest" in container's DB. > > > > Could I find the value? > > > > Q2: > > What if a large object be interrupted during upload , will the manifest > > objects be deleted? > > For example , > > OBJ1 :200MB > > I execute $>swift upload con1 OBJ1 -S 1024000 > > I do a force interrupt while send segment 10. > > > > I believe that OBJ1 won't live in con1 , what will happen to the rest > > manifest objects? > > > > Those objects seems still live in con1_segments container. Is there any > > mechanism to audit OBJ1 and delete those manifest objects ? > > > > > > > > -- > > +Hugo Kuo+ > > tonyt...@gmail.com > > +886 935004793 > > > > > > _______________________________________________ > > Mailing list: https://launchpad.net/~openstack > > Post to : openstack@lists.launchpad.net > > Unsubscribe : https://launchpad.net/~openstack > > More help : https://help.launchpad.net/ListHelp > > > -- +Hugo Kuo+ tonyt...@gmail.com + <tonyt...@gmail.com>886 935004793
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