Re: [zfs-discuss] slow speed problem with a new SAS shelf

2012-07-23 Thread Richard Elling
On Jul 22, 2012, at 10:18 PM, Yuri Vorobyev wrote: Hello. I faced with a strange performance problem with new disk shelf. We a using ZFS system with SATA disks for a while. What OS and release? -- richard It is Supermicro SC846-E16 chassis, Supermicro X8DTH-6F motherboard with 96Gb

Re: [zfs-discuss] Question on 4k sectors

2012-07-23 Thread Anonymous
Hans J. Albertsson hans.j.alberts...@branneriet.se wrote: I think the problem is with disks that are 4k organised, but report their blocksize as 512. If the disk reports it's blocksize correctly as 4096, then ZFS should not have a problem. At least my 2TB Seagate Barracuda disks seemed

Re: [zfs-discuss] Question on 4k sectors

2012-07-23 Thread Jim Klimov
2012-07-23 18:37, Anonymous wrote: Really, it would be so helpful to know which drives we can buy with confidence and which should be avoided...is there any way to know from the manufacturers web sites or do you have to actually buy one and see what it does? Thanks to everyone for the info. I

Re: [zfs-discuss] slow speed problem with a new SAS shelf

2012-07-23 Thread Yuri Vorobyev
23.07.2012 19:39, Richard Elling пишет: I faced with a strange performance problem with new disk shelf. We a using ZFS system with SATA disks for a while. What OS and release? Oh. I forgot this important thing. It is OpenIndiana oi_151a5 now.

Re: [zfs-discuss] slow speed problem with a new SAS shelf

2012-07-23 Thread Sašo Kiselkov
Hi, Have you had a look iostat -E (error counters) to make sure you don't have faulty cabling? I've bad cables trip me up once in a manner similar to your situation here. Cheers, -- Saso On 07/23/2012 07:18 AM, Yuri Vorobyev wrote: Hello. I faced with a strange performance problem with new

Re: [zfs-discuss] [zfs] LZ4 compression algorithm

2012-07-23 Thread Eugen Leitl
- Forwarded message from Bob Friesenhahn bfrie...@simple.dallas.tx.us - From: Bob Friesenhahn bfrie...@simple.dallas.tx.us Date: Mon, 23 Jul 2012 12:55:44 -0500 (CDT) To: z...@lists.illumos.org cc: Radio młodych bandytów radiomlodychbandy...@o2.pl, Pawel Jakub Dawidek

Re: [zfs-discuss] Question on 4k sectors

2012-07-23 Thread Anonymous Remailer (austria)
You wrote: 2012-07-23 18:37, Anonymous wrote: Really, it would be so helpful to know which drives we can buy with confidence and which should be avoided...is there any way to know from the manufacturers web sites or do you have to actually buy one and see what it does? Thanks to

Re: [zfs-discuss] Question on 4k sectors

2012-07-23 Thread Bob Friesenhahn
On Mon, 23 Jul 2012, Anonymous Remailer (austria) wrote: The question was relative to some older boxes running S10 and not planning to upgrade the OS, keeping them alive as long as possible... Recent Solaris 10 kernel patches are addressing drives with 4k sectors. It seems that Solaris 10