Patrick writes: > Hi, > > > sounds like your workload is very similar to mine. is all public > > access via NFS? > > Well it's not 'public directly', courier-imap/pop3/postfix/etc... but > the maildirs are accessed directly by some programs for certain > things. > > > 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. > > Also, another question, when turning compression on does the data > already on the volume become compressed in the background ? or is in > writes from then on ? My understanding is : From then on. -r > > P > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
