On Sun, Feb 28, 2016 at 4:00 PM, Clint Martin < clintlmar...@coolfiretechnologies.com> wrote:
> Your plan for replacing your 200gb drive sounds good to me. Since you are > running jbod, I wouldn't worry about manually redistributing data from your > other disk to the new one. Cassandra will do that for you as it performs > compaction. > Is this done by pickWriteableDirectory <https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/db/Directories.java#L386> ? > While you're doing the drive change, you need to complete the swap and > restart of the node before the hinted handoff window expires on the other > nodes. If you do not complete in time, you'll want to perform a repair on > the node. > Yes. Thanks! > > > Clint > On Feb 28, 2016 9:33 AM, "Michał Łowicki" <mlowi...@gmail.com> wrote: > >> Hi, >> >> I've two disks on single box (500GB + 200GB). data_file_directories in >> cassandra.yaml has two entries. I would like to replace 200GB with 500GB as >> it's running out of space and to align it with others we've in the cluster. >> The plan is to stop C*, attach new disk, move data from 200GB to new one >> and mount it at the same point in the hierarchy. When done start C*. >> >> Additionally I would like to move some data from the old 500GB to the new >> one to distribute used disk space equally. Probably all related files for >> single SSTable should be moved i.e. >> >> foo-bar-ka-1630184-CompressionInfo.db >> >> foo-bar-ka-1630184-Data.db >> >> foo-bar-ka-1630184-Digest.sha1 >> >> foo-bar-ka-1630184-Filter.db >> >> foo-bar-ka-1630184-Index.db >> >> foo-bar-ka-1630184-Statistics.db >> >> foo-bar-ka-1630184-Summary.db >> >> foo-bar-ka-1630184-TOC.txt >> >> Is this something which should work or you see some obstacles? (C* >> 2.1.13). >> -- >> BR, >> Michał Łowicki >> > -- BR, Michał Łowicki
