Thank you. but the fstrim can used with in mount partition...But I wanted to as cloud admin... I have a few uses with high volume size (ie capacity) allotted, but only used 5% of the capacity. so I wanted to reduce the size to 10% of size using the rbd resize command. But in this process, if a customer's volume has more than 10% data, then I may end-up with data lost... Thanks Swami On Wed, May 11, 2016 at 1:17 PM, Wido den Hollander <wido@xxxxxxxx> wrote: > >> Op 11 mei 2016 om 8:38 schreef M Ranga Swami Reddy <swamireddy@xxxxxxxxx>: >> >> >> Hello, >> I wanted to resize an image using 'rbd' resize option, but it should >> be have data loss. >> For ex: I have image with 100 GB size (thin provisioned). and this >> image has data of 10GB only. Here I wanted to resize this image to >> 11GB, so that 10GB data is safe and its resized. >> >> Can I do the above resize safely.? >> > > No, you can't. You need to resize the filesystem and partitions inside the RBD image to something below 11GB before you can do this. > > Still, make sure you have backups! > > Also, why shrink? If you can, run a fstrim on the image, that might reclaimed unused space on the Ceph cluster. > >> If I tried to resize to 5GB, is rbd throughs an error saying that your >> data is going loss, something like that??? >> >> Any inputs here are appriciated. >> >> Thanks >> Swami >> _______________________________________________ >> 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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