lock_exclusive() / lock_shared() methods are not related to image watchers. Instead, it is tied to the advisory locking mechanism -- and list_lockers() can be used to query who has a lock. -- Jason Dillaman ----- Original Message ----- > From: "NEVEU Stephane" <stephane.neveu@xxxxxxxxxxxxxxx> > To: "Jason Dillaman" <dillaman@xxxxxxxxxx> > Cc: "Ceph Users" <ceph-users@xxxxxxxxxxxxxx>, "Gregory Farnum" <gfarnum@xxxxxxxxxx> > Sent: Monday, December 7, 2015 4:09:45 AM > Subject: RE: rbd_inst.create > > Hi, > > One more question rbd.py / rados.py, is there a way to retrieve watchers on > rbd images ? ImageBusy class is raised when trying to use lock_exclusive() > or lock_shared() but I cannot find how to list watchers... > Thanks > > [@@ THALES GROUP INTERNAL @@] > > -----Message d'origine----- > De : Jason Dillaman [mailto:dillaman@xxxxxxxxxx] > Envoyé : lundi 30 novembre 2015 15:38 > À : NEVEU Stephane > Cc : Ceph Users; Gregory Farnum > Objet : Re: rbd_inst.create > > ... and once you create a pool-level snapshot on a pool, there is no way to > convert that pool back to being compatible with RBD self-managed snapshots. > > As for the RBD image feature bits, they are defined within rbd.py. On > master, they currently are as follows: > > RBD_FEATURE_LAYERING = 1 > RBD_FEATURE_STRIPINGV2 = 2 > RBD_FEATURE_EXCLUSIVE_LOCK = 4 > RBD_FEATURE_OBJECT_MAP = 8 > RBD_FEATURE_FAST_DIFF = 16 > RBD_FEATURE_DEEP_FLATTEN = 32 > RBD_FEATURE_JOURNALING = 64 > > -- > > Jason Dillaman > > > ----- Original Message ----- > > > From: "Gregory Farnum" <gfarnum@xxxxxxxxxx> > > To: "NEVEU Stephane" <stephane.neveu@xxxxxxxxxxxxxxx> > > Cc: "Ceph Users" <ceph-users@xxxxxxxxxxxxxx> > > Sent: Monday, November 30, 2015 8:17:17 AM > > Subject: Re: rbd_inst.create > > > On Nov 27, 2015 3:34 AM, "NEVEU Stephane" < > > stephane.neveu@xxxxxxxxxxxxxxx > > > wrote: > > > > > > Ok, I think I got it. It seems to come from here : > > > > > > tracker.ceph.com/issues/6047 > > > > > > > > > > > > I’m trying to snapshot an image while I previously made a snapshot > > > of my pool… whereas it just works fine when using a brand new pool. > > > I’m using ceph v0.80.10 on Ubuntu 14.04. As I see, it has been > > > patched since dumpling. Could it be a regression ? > > Pool snapshots and the "self-managed" snapshots used by rbd are > > incompatible. > > You have to pick one or the other on each pool. > > > > > > > > > > > > > > > > > > > > > > > > De : ceph-users [mailto: ceph-users-bounces@xxxxxxxxxxxxxx ] De la > > > part de NEVEU Stephane Envoyé : jeudi 26 novembre 2015 15:49 À : > > > ceph-users@xxxxxxxxxxxxxx Objet : rbd_inst.create > > > > > > > > > > > > Hi all, > > > > > > > > > > > > I’m using python scripts to create rbd images like described here > > > http://docs.ceph.com/docs/giant/rbd/librbdpy/ > > > > > > rbd_inst.create(ioctx, 'myimage', size, old_format=False, > > > features=1) seems to create a layering image > > > > > > rbd_inst.create(ioctx, 'myimage', size, old_format=False, > > > features=2) seems to create a stripped image > > > > > > > > > > > > Setting up “rbd default format =2” in ceph.conf and just using the > > > following (without feature=x) > > > > > > rbd_inst.create(ioctx, 'myimage', size) seems to create a layered + > > > stripped image > > > > > > > > > > > > If someone could point me to the documentation about those bitmasks > > > (features), that would be great J I cannot find it. > > > > > > > > > > > > Moreover, when my images are created this way (using rbd_inst.create > > > with python), no way to snapshot an image ! > > > > > > #rbd snap create rbd/myimage@snap1 > > > > > > …. -1 librbd: failed to create snap id: (22) Invalid argument > > > > > > > > > > > > Same thing with img.create_snap(snap) in python, snapshots are not > > > created. > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > [@@ THALES GROUP INTERNAL @@] > > > > > > > > > > > > > > > _______________________________________________ > > > ceph-users mailing list > > > ceph-users@xxxxxxxxxxxxxx > > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > > > > _______________________________________________ > > ceph-users mailing list > > ceph-users@xxxxxxxxxxxxxx > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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