Re: [zfs-discuss] raidz and compression, difficulties

2008-01-27 Thread Joachim Pihl
On Sat, 26 Jan 2008 23:33:16 +0100, Toby Thain [EMAIL PROTECTED] wrote: On 26-Jan-08, at 2:24 AM, Joachim Pihl wrote: So far so good, zfs get all reports compression to be active. Now for the problem: After adding another 300GB of uncompressed .tif and .bin/.cue (audio CD) files, I

Re: [zfs-discuss] raidz and compression, difficulties

2008-01-27 Thread Joachim Pihl
On Sun, 27 Jan 2008 19:11:33 +0100, MC [EMAIL PROTECTED] wrote: I didn't expect miracles, but since WinRAR gave 13% compression ZFS doesn't compress a block if it can't get a certain amount of return on it. Since the default compression is less effective than RAR, you can bet ZFS is

[zfs-discuss] raidz and compression, difficulties

2008-01-26 Thread Joachim Pihl
Running SXDE (snv_70) for a file server, and I must admit I'm new to Solaris and zfs. zfs does not appear to do any compression at all, here is what I did to set it up: I created a four drive raidz array: zpool create pool raidz c0d0 c0d1 c1d0 c1d1 then an extra file system on that: zfs

Re: [zfs-discuss] raidz and compression, difficulties

2008-01-26 Thread Joachim Pihl
On Sat, 26 Jan 2008 15:20:01 +0100, Rob Logan [EMAIL PROTECTED] wrote: it won't go back and compress old data, but if you copy the files, perhaps into a new folder, they will be compressed on that copy or move. I can't see why that should help, since the 300GB I added after enabling