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. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
