do you have to replace those disks? can you simply add new disks to those nodes and configure C* to use JBOD? On Dec 18, 2014 10:18 AM, "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 >
