Hi Or, You don't have another machine on the network that would temporarily be able to host your /var/lib/cassandra content? That way you would simply be scp:ing the files temporarily to another machine and copy them back when done. You obviously want to do a repair afterwards just in case, but this could save you some time.
Just an idea, Jens On Thu, Dec 18, 2014 at 4:17 PM, Or Sher <or.sh...@gmail.com> wrote: > > Hi all, > > We have a situation where some of our nodes have smaller disks and we > would like to align all nodes by replacing the smaller disks to bigger ones > without replacing nodes. > We don't have enough space to put data on / disk and copy it back to the > bigger disks so we would like to rebuild the nodes data from other replicas. > > What do you think should be the procedure here? > > I'm guessing it should be something like this but I'm pretty sure it's not > enough. > 1. shutdown C* node and server. > 2. replace disks + create the same vg lv etc. > 3. start C* (Normally?) > 4. nodetool repair/rebuild? > *I think I might get some consistency issues for use cases relying on > Quorum reads and writes for strong consistency. > What do you say? > > Another question is (and I know it depends on many factors but I'd like to > hear an experienced estimation): How much time would take to rebuild a 250G > data node? > > Thanks in advance, > Or. > > -- > Or Sher > -- Jens Rantil Backend engineer Tink AB Email: jens.ran...@tink.se Phone: +46 708 84 18 32 Web: www.tink.se Facebook <https://www.facebook.com/#!/tink.se> Linkedin <http://www.linkedin.com/company/2735919?trk=vsrp_companies_res_photo&trkInfo=VSRPsearchId%3A1057023381369207406670%2CVSRPtargetId%3A2735919%2CVSRPcmpt%3Aprimary> Twitter <https://twitter.com/tink>
