Re: [zfs-discuss] zfs and small files

2007-09-24 Thread Tomas Ă–gren
On 24 September, 2007 - Claus Guttesen sent me these 1,5K bytes: > > > The files are approx. 1 MB with an thumbnail of approx. 4 KB. > > > > > > > So the 1 MB files are stored as ~8 x 128K recordsize. > > > > Because of > > 5003563 use smaller "tail block" for last block of object > > I

Re: [zfs-discuss] zfs and small files

2007-09-24 Thread Claus Guttesen
> > The files are approx. 1 MB with an thumbnail of approx. 4 KB. > > > > So the 1 MB files are stored as ~8 x 128K recordsize. > > Because of > 5003563 use smaller "tail block" for last block of object I tried to search for this but only saw references to this and similar threads. Is th

Re: [zfs-discuss] zfs and small files

2007-09-21 Thread Roch - PAE
Claus Guttesen writes: > > So the 1 MB files are stored as ~8 x 128K recordsize. > > > > Because of > > 5003563 use smaller "tail block" for last block of object > > > > The last block of you file is partially used. It will depend > > on your filesize distribution by without that in

Re: [zfs-discuss] zfs and small files

2007-09-21 Thread Claus Guttesen
> So the 1 MB files are stored as ~8 x 128K recordsize. > > Because of > 5003563 use smaller "tail block" for last block of object > > The last block of you file is partially used. It will depend > on your filesize distribution by without that info we can > only guess that we're wasting an

Re: [zfs-discuss] zfs and small files

2007-09-21 Thread Roch - PAE
Claus Guttesen writes: > > > 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 4

Re: [zfs-discuss] zfs and small files

2007-09-18 Thread Claus Guttesen
> > 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

Re: [zfs-discuss] zfs and small files

2007-09-18 Thread Richard Elling
Claus Guttesen wrote: > 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.

Re: [zfs-discuss] zfs and small files

2007-09-18 Thread Claus Guttesen
> 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? Just re-read the evil-tuning-guide and metadata is allready compressed (http://www.solarisinternals.com/wiki/index.php/ZF

[zfs-discuss] zfs and small files

2007-09-18 Thread Claus Guttesen
Hi. 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 i