Hi Jason, it works fine.... but flatten take how longer than than before.. i would like to know how to decide the --stripe-unit & --stripe-count to gain the best performance? i see you put unit of 4K and count with 16.. why? -- --stripe-unit 4K --stripe-count 16 --
thank you! On Fri, Jan 29, 2016 at 11:15 AM, Jason Dillaman <[email protected]> wrote: > When you set "--stripe-count" to 1 and set the "--stripe-unit" to the > object size, you have actually explicitly told the rbd CLI to not use > "fancy" striping. A better example would be something like: > > rbd clone --stripe-unit 4K --stripe-count 16 storage1/cloudlet-1@snap1 > storage1/cloudlet-1-clone > > -- > > Jason Dillaman > > > ----- Original Message ----- > > > From: "Bill WONG" <[email protected]> > > To: "Jason Dillaman" <[email protected]> > > Cc: "ceph-users" <[email protected]> > > Sent: Thursday, January 28, 2016 10:08:38 PM > > Subject: Re: [ceph-users] Striping feature gone after flatten with cloned > > images > > > hi jason, > > > how i can make the stripping parameters st the time of clone creation? > as i > > have tested, which looks doesn't work properly.. > > the clone image still without stripping.. any idea? > > -- > > rbd clone --stripe-unit 4096K --stripe-count 1 storage1/cloudlet-1@snap1 > > storage1/cloudlet-1-clone > > rbd flatten storage1/cloudlet-1-clone > > rbd info storage1/cloudlet-1-clone > > rbd image 'cloudlet-1-clone': > > size 1000 GB in 256000 objects > > order 22 (4096 kB objects) > > block_name_prefix: rbd_data.5ecd364dfe1f8 > > format: 2 > > features: layering > > flags: > > --- > > > On Fri, Jan 29, 2016 at 3:54 AM, Jason Dillaman < [email protected] > > > wrote: > > > > You must specify the clone's striping parameters at the time of its > > > creation > > > -- it is not inherited from the parent image. > > > > > > -- > > > > > > Jason Dillaman > > > > > > ----- Original Message ----- > > > > > > > From: "Bill WONG" < [email protected] > > > > > > > To: "ceph-users" < [email protected] > > > > > > > Sent: Thursday, January 28, 2016 1:25:12 PM > > > > > > Subject: [ceph-users] Striping feature gone after flatten with cloned > > > > images > > > > > > > Hi, > > > > > > > i have tested with the flatten: > > > > > > 1) make a snapshot of image > > > > > > 2) protect the snapshot > > > > > > 3) clone the snapshot > > > > > > 4) flatten the clone > > > > > > then i found issue: > > > > > > with the original image / snapshot or the clone before flatten, all > are > > > > with > > > > > > stripping feature, BUT after flattened the clone, then there is no > more > > > > > > Stripping with the clone image...what is the issue? and how can > enable > > > > the > > > > > > striping feature? > > > > > > > thank you! > > > > > > > _______________________________________________ > > > > > > ceph-users mailing list > > > > > > [email protected] > > > > > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > >
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