> > I have many small - mostly jpg - files where the original file is > > approx. 1 MB and the thumbnail generated is approx. 4 KB. The files > > are currently on vxfs. I have copied all files from one partition onto > > a zfs-ditto. The vxfs-partition occupies 401 GB and zfs 449 GB. Most > > files uploaded are in jpg and all thumbnails are always jpg. > > Is there a problem?
Not by the diskusage itself. But if zfs takes up more space than vxfs (12 %) 80 TB will become 89 TB instead (our current storage) and add cost. > Also, how are you measuring this (what commands)? I did a 'df -h'. > > Will a different volblocksize (during creation of the partition) make > > better use of the available diskspace? Will (meta)data require less > > space if compression is enabled? > > volblocksize won't have any affect on file systems, it is for zvols. > Perhaps you mean recordsize? But recall that recordsize is the maximum limit, > not the actual limit, which is decided dynamically. > > > I read http://www.opensolaris.org/jive/thread.jspa?threadID=37673&tstart=105 > > which is very similar to my case except for the file type. But no > > clear pointers otherwise. > > A good start would be to find the distribution of file sizes. The files are approx. 1 MB with an thumbnail of approx. 4 KB. -- regards Claus When lenity and cruelty play for a kingdom, the gentlest gamester is the soonest winner. Shakespeare _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
