Not done any FS shrink before "rbd resize". Please let me know what to do with FS shink before "rbd resize" Thanks Swami On Thu, May 12, 2016 at 4:34 PM, Eneko Lacunza <elacunza@xxxxxxxxx> wrote: > Did you shrink the FS to be smaller than the target rbd size before doing > "rbd resize"? > > El 12/05/16 a las 12:33, M Ranga Swami Reddy escribió: > >> When I used "rbd resize" option for size shrink, the image/volume >> lost its fs sectors and asking for "fs" not found... >> I have used "mkf" option, then all data lost in it? This happens with >> shrink option... >> >> >> Thanks >> Swami >> >> On Wed, May 11, 2016 at 5:28 PM, Christian Balzer <chibi@xxxxxxx> wrote: >>> >>> Hello, >>> >>> On Wed, 11 May 2016 13:33:44 +0200 (CEST) Alexandre DERUMIER wrote: >>> >>>>>> but the fstrim can used with in mount partition...But I wanted to as >>>>>> cloud admin... >>>> >>>> if you use qemu, you can launch fstrim through guest-agent >>>> >>> This of course assumes that qemu/kvm is using a disk method that allows >>> for TRIM. >>> >>> And nobody in their right mind uses IDE (performance), while virtio-scsi >>> isn't the default or even supported with some cloud stacks. >>> >>> And of course that the VM in question runs Linux and has fstrim >>> installed. >>> >>> Otherwise solid advise, I agree. >>> >>> Christian >>>> >>>> >>>> http://dustymabe.com/2013/06/26/enabling-qemu-guest-agent-anddddd-fstrim-again/ >>>> >>>> ----- Mail original ----- >>>> De: "M Ranga Swami Reddy" <swamireddy@xxxxxxxxx> >>>> À: "Wido den Hollander" <wido@xxxxxxxx> >>>> Cc: "ceph-users" <ceph-users@xxxxxxxx> >>>> Envoyé: Mercredi 11 Mai 2016 13:16:27 >>>> Objet: Re: rbd resize option >>>> >>>> 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 >>>> _______________________________________________ >>>> ceph-users mailing list >>>> ceph-users@xxxxxxxxxxxxxx >>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >>> >>> >>> -- >>> Christian Balzer Network/Systems Engineer >>> chibi@xxxxxxx Global OnLine Japan/Rakuten Communications >>> http://www.gol.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 > > > > -- > Zuzendari Teknikoa / Director Técnico > Binovo IT Human Project, S.L. > Telf. 943493611 > 943324914 > Astigarraga bidea 2, planta 6 dcha., ofi. 3-2; 20180 Oiartzun (Gipuzkoa) > www.binovo.es > > > _______________________________________________ > 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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