Used "resize2fs" and its working for resize to higher number (ie from 10G -> 20G) or so... If I tried to resize the lower numbers (ie from 10G -> 5G), its failied...with below message: === ubuntu@swami-resize-test-vm:/$ sudo resize2fs /dev/vdb sudo: unable to resolve host swami-resize-test-vm resize2fs 1.42.9 (4-Feb-2014) Please run 'e2fsck -f /dev/vdb' first. ubuntu@swami-resize-test-vm:/$ sudo e2fsck -f /dev/vdb sudo: unable to resolve host swami-resize-test-vm e2fsck 1.42.9 (4-Feb-2014) The filesystem size (according to the superblock) is 52428800 blocks The physical size of the device is 13107200 blocks Either the superblock or the partition table is likely to be corrupt! Abort<y>? On Thu, May 12, 2016 at 6:37 PM, Eneko Lacunza <elacunza@xxxxxxxxx> wrote: > Swami, > > You must resize (reduce) a filesystem before shrinking a partition/disk. > Please search online how to do so with your specific filesystem/partitions. > > El 12/05/16 a las 15:00, M Ranga Swami Reddy escribió: > >> 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 > > > > -- > 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
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