The number of journals you have is dependant on the number of cluster members using that GFS filesystem, not the size of it. As I understand it, you may have to tweak the size of the journals if you're doing a lot of I/O. At a minimum, you're going to need N journals, where N is the number of cluster members using the GFS volume. I generally create N+1 journals in case I need to add a host quickly and I might forget to add a journal otherwise.
On Tue, Dec 29, 2009 at 12:59 AM, Diamond Li <diamondi...@gmail.com> wrote: > hello everyone, > > I feel a little bit confused about gfs_jadd. my understanding is we do > not have to add new journal after we extend file system size because > current size may be enough, is it true ? > > is there any best pratice for when should we add new journal, the > right number of new added journal, and journal size? for instance, if > my file system grows from 2G to 4G, what would be the right answer for > my questions, and it grows from 2T to 4T, etc. > > best regards! > > -- > Linux-cluster mailing list > Linux-cluster@redhat.com > https://www.redhat.com/mailman/listinfo/linux-cluster >
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