grant beattie writes: > On Tue, Jun 27, 2006 at 12:07:47PM +0200, Roch wrote: > > > > > for small file workloads, setting recordsize to a value lower than the > > > > default (128k) may prove useful. > > > > > > When changing things like recordsize, can i do it on the fly on a > > > volume ? ( and then if i can what happens to the data already on the > > > volume ? ) > > > > You do it On the fly for a given FS (recordsize it's not a > > property of ZVOL). Files that were largers than the previous > > recordsize will not change. Files that we smaller and thus > > were stored as a single record, will continue to be stored > > as single record until a write makes the file bigger than > > the current value of recordsize. At which point they are > > store as multiple records of the new recordsize. Performance > > wise I don't worry too much about these things. > > ah, yes. the key here is "until a write makes the file bigger", > which would ~never happen given Maildir format mail as the files > are not modified after they are written. > > they may be unlinked, renamed, or rewritten with a new name - but not > modified. > > grant. >
I'd figure that there would be no need to tune the recordsize for such usage. And if the associated mailboxes are themselve rather small there again no need to tune. -r _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
