rbd is already thin provisioned. when you set its size, your setting the maximum size. its explained here, http://ceph.com/docs/master/rbd/rados-rbd-cmds/
On Thu, Jul 30, 2015 at 12:04 PM Robert LeBlanc <rob...@leblancnet.us> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA256 > > I'll take a stab at this. > > I don't think it will be a feature that you will find in Ceph due to > the fact that Ceph doesn't really understand what is going on inside > the RBD. There are too many technologies that can use RBD that it is > not feasible to try and support something like this. > > You can however have a service that runs in your VM which monitors > free space. Then the free space gets too low, it can call to a service > you write which will then expand the RBD on the fly and then the VM > itself and resize the partitions and the file system after the RBD is > expanded. > > I'm not sure how CephFS fits into all of this as it is different than > RBD. CephFS is to NFS as RBD is to SAN block storage. > > If I misunderstood the question, please clarify. > -----BEGIN PGP SIGNATURE----- > Version: Mailvelope v0.13.1 > Comment: https://www.mailvelope.com > > wsFcBAEBCAAQBQJVunUCCRDmVDuy+mK58QAAwGcP/0Y5gz4flZ0XuaXdKlez > iogX9QsAoPk9s8fd0vpc3Prlhx/YODgkqqm35iJh5PaDEqb6njZwe3CR0WBh > mba6xAjSGe9D8dzkLP5cCvRSlkVexddAfj5K/M+JkjWyQhlq4TQcu3CSBo8Q > 1pyI6dDwWNl8ScCu4/PN4Bl2OD9favEs8tXjNJ5/mhZWFjSN7t8/LLqsUNu6 > AlMp2hFFfb1f0ky7EI/Hg3uw0+BbGDn/N0oxDyZqH7Wqnp/5L4kRAkZkXsGh > T7a4KxReNu/5eg2Tef83h7AAeRTSDTEw+38ToGnOIGpXYCxKdWF878Xs7tVa > +jPUds7aSNazaRB9nSPYiIxXBcTRKN2VFqhFNyQ/6CrEvsjkZQKkQfjJgNtL > eg0hmjS1X0QryapX7xhfz+Apx369Pkitm8UosyPIwEPnMuVqwVN5VwDTDkub > FlGNHX+b1/NDgZDpWF+b5gOErHMW8kWRNt/+2i5pXj0ZjDADmrQn+Hd9G0Hx > g1dot64vLogcvcyt0C+fLicF9xlddU/Zuz7VZLyIOH1KSVhABK1RaI8+Zws6 > ZWriDFal0ztd0BNEQlCqtlo4hyY/AVies9qB6V4sUL0UuEL/+iTj71/VNh09 > RJIURK6KySwxtW97pMGGafw5xPOjpxnm75D6AmovZ6WV68GSxlNpTY/V7CPH > dW/U > =h5n5 > -----END PGP SIGNATURE----- > ---------------- > Robert LeBlanc > PGP Fingerprint 79A2 9CA4 6CC4 45DD A904 C70E E654 3BB2 FA62 B9F1 > > > On Wed, Jul 29, 2015 at 11:32 PM, Shneur Zalman Mattern > <shz...@eimsys.co.il> wrote: > > Hi to all! > > > > > > Perhaps, somebody already thought about, but my Googling had no results. > > > > > > How can I do RBD that will grow on demand of VM/client disk space. > > > > Are there in Ceph some options for this? > > > > Is it planned to do? > > > > Is it utopic idea? > > > > Is this client need CephFS already? > > > > > > Thanks, > > > > Shneur > > > > > > > > > > > > > ************************************************************************************ > > This footnote confirms that this email message has been scanned by > > PineApp Mail-SeCure for the presence of malicious code, vandals & > computer > > viruses. > > > ************************************************************************************ > > > > > > _______________________________________________ > > ceph-users mailing list > > ceph-users@lists.ceph.com > > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com > > > _______________________________________________ > ceph-users mailing list > ceph-users@lists.ceph.com > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >
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