Re: [zfs-discuss] periodic slow responsiveness

2009-09-06 Thread James Lever
On 07/09/2009, at 10:46 AM, Ross Walker wrote: zpool is RAIDZ2 comprised of 10 * 15kRPM SAS drives behind an LSI 1078 w/ 512MB BBWC exposed as RAID0 LUNs (Dell MD1000 behind PERC 6/ E) with 2x SSDs each partitioned as 10GB slog and 36GB remainder as l2arc behind another LSI 1078 w/ 256MB BB

Re: [zfs-discuss] periodic slow responsiveness

2009-09-06 Thread James Lever
On 07/09/2009, at 11:08 AM, Richard Elling wrote: Ok, just so I am clear, when you mean "local automount" you are on the server and using the loopback -- no NFS or network involved? Correct. And the behaviour has been seen locally as well as remotely. You are looking for I/O that takes sec

Re: [zfs-discuss] Yet another "where did the space go" question

2009-09-06 Thread Frank Middleton
Near Success! After 5 (yes, five) attempts, managed to do an update of snv111b to snv122, until it ran out of space again. Looks like I need to get a bigger disk... Sorry about the monolog, but there might be someone on this list trying to use pkg on SPARC who, like me, has been unable to subscri

Re: [zfs-discuss] periodic slow responsiveness

2009-09-06 Thread Richard Elling
On Sep 6, 2009, at 5:06 PM, James Lever wrote: On 07/09/2009, at 6:24 AM, Richard Elling wrote: On Sep 6, 2009, at 7:53 AM, Ross Walker wrote: On Sun, Sep 6, 2009 at 9:15 AM, James Lever wrote: I’m experiencing occasional slow responsiveness on an OpenSolaris b118 system typically noticed when

Re: [zfs-discuss] periodic slow responsiveness

2009-09-06 Thread Ross Walker
Sorry for my earlier post I responded prematurely. On Sep 6, 2009, at 9:15 AM, James Lever wrote: I’m experiencing occasional slow responsiveness on an OpenSolaris b1 18 system typically noticed when running an ‘ls’ (no extra flags, so no directory service lookups). There is a delay of be

Re: [zfs-discuss] periodic slow responsiveness

2009-09-06 Thread James Lever
On 07/09/2009, at 6:24 AM, Richard Elling wrote: On Sep 6, 2009, at 7:53 AM, Ross Walker wrote: On Sun, Sep 6, 2009 at 9:15 AM, James Lever wrote: I’m experiencing occasional slow responsiveness on an OpenSolaris b118 system typically noticed when running an ‘ls’ (no extra flags, so no dir

Re: [zfs-discuss] periodic slow responsiveness

2009-09-06 Thread James Lever
On 07/09/2009, at 12:53 AM, Ross Walker wrote: That behavior sounds a lot like a process has a memory leak and is filling the VM. On Linux there is an OOM killer for these, but on OpenSolaris, your the OOM killer. If it was this type of behaviour, where would it be logged when the process w

Re: [zfs-discuss] Wikipedia on ZFS

2009-09-06 Thread Thomas Burgess
i don't think it's the same at all. I think it's about the same as filling a radiator in a car with oatmeal to make it stop leaking. On Sun, Sep 6, 2009 at 6:26 PM, Bob Friesenhahn < bfrie...@simple.dallas.tx.us> wrote: > On Sun, 6 Sep 2009, Thomas Burgess wrote: > >> >> if you add a raidz group

Re: [zfs-discuss] Wikipedia on ZFS

2009-09-06 Thread Bob Friesenhahn
On Sun, 6 Sep 2009, Thomas Burgess wrote: if you add a raidz group to a group of 3 mirrors, the entire pool slows down to the speed of the raidz. while you technically CAN do it, it's a horrible idea. I don't think it is necessarily as horrid as you say. Zfs does distribute writes to fa

Re: [zfs-discuss] Wikipedia on ZFS

2009-09-06 Thread Richard Elling
On Sep 6, 2009, at 11:19 AM, Al Lang wrote: The "limitations" section of the Wikipedia article on ZFS currently includes the statement: "You cannot mix vdev types in a zpool. For example, if you had a striped ZFS pool consisting of disks on a SAN, you cannot add the local-disks as a mi

Re: [zfs-discuss] Yet another "where did the space go" question

2009-09-06 Thread Frank Middleton
Correction On 09/06/09 12:00 PM, I wrote: (there are no hidden directories in / ), Well, there is .zfs, of course, but it is normally hidden, apparently by default on SPARC rpool, but not on X86 rpool or non-rpool pools on either. Hmmm. I don't recollect setting the snapdir property on any po

Re: [zfs-discuss] periodic slow responsiveness

2009-09-06 Thread Richard Elling
On Sep 6, 2009, at 7:53 AM, Ross Walker wrote: On Sun, Sep 6, 2009 at 9:15 AM, James Lever wrote: I’m experiencing occasional slow responsiveness on an OpenSolaris b118 system typically noticed when running an ‘ls’ (no extra flags, so no directory service lookups). There is a delay of betwee

Re: [zfs-discuss] Wikipedia on ZFS

2009-09-06 Thread Ross Walker
On Sep 6, 2009, at 3:32 PM, Thomas Burgess wrote: yes, but it stripes across the vdevs, and when it needs to read data back, it will absolutely be limited. During reads the raidz will be the fastest vdev, during writes it should have about the same write performance as any one mirror vd

Re: [zfs-discuss] Wikipedia on ZFS

2009-09-06 Thread Thomas Burgess
yes, but it stripes across the vdevs, and when it needs to read data back, it will absolutely be limited. On Sun, Sep 6, 2009 at 3:14 PM, Mario Goebbels wrote: > if you add a raidz group to a group of 3 mirrors, the entire pool slows >> down to the speed of the raidz. >> > > That's not true

Re: [zfs-discuss] Wikipedia on ZFS

2009-09-06 Thread Mario Goebbels
if you add a raidz group to a group of 3 mirrors, the entire pool slows down to the speed of the raidz. That's not true. Blocks are being randomly spread across all vdevs. Unless all requests keep pulling blocks from the RAID-Z, the speed is a mean of the performance of all vdevs. -mg __

Re: [zfs-discuss] Wikipedia on ZFS

2009-09-06 Thread Thomas Burgess
you can't without forcing...and even if you do, it's not a good idea. if you do your pool will have the lowest redundancy/speed of the worst one... sooo if you add a single drive to a raidz vdev, your entire pool loses it's redundancy, if you add a single drive to a mirror, likewise if you add

[zfs-discuss] Wikipedia on ZFS

2009-09-06 Thread Al Lang
The "limitations" section of the Wikipedia article on ZFS currently includes the statement: "You cannot mix vdev types in a zpool. For example, if you had a striped ZFS pool consisting of disks on a SAN, you cannot add the local-disks as a mirrored vdev." As I understand it, this is simply

[zfs-discuss] Recover after zpool add -f ? Is it possible?

2009-09-06 Thread Dmitry M. Reznitsky
Hello. Recently I've upgraded one of my machines to OpenSolaris 2009.06; the box has a few HDD: 1) main with OS, etc and 2) archive and ... After installing I created users, environment, etc on HDD(1), and then wanted to mount the existing ZFS for the rest (from (2), etc). And by a mistake, for

[zfs-discuss] Yet another "where did the space go" question

2009-09-06 Thread Frank Middleton
An attempt to pkg image-update from snv111b to snv122 failed miserably for a number of reasons which are probably out of scope here. Suffice it to say that it ran out of disk space after the third attempt. Before starting, I was careful to make a baseline snapshot, but rolling back to that snapsh

Re: [zfs-discuss] periodic slow responsiveness

2009-09-06 Thread Ross Walker
On Sun, Sep 6, 2009 at 9:15 AM, James Lever wrote: > I’m experiencing occasional slow responsiveness on an OpenSolaris b118 > system typically noticed when running an ‘ls’ (no extra flags, so no > directory service lookups).  There is a delay of between 2 and 30 seconds > but no correlation has bee

[zfs-discuss] periodic slow responsiveness

2009-09-06 Thread James Lever
I’m experiencing occasional slow responsiveness on an OpenSolaris b118 system typically noticed when running an ‘ls’ (no extra flags, so no directory service lookups). There is a delay of between 2 and 30 seconds but no correlation has been noticed with load on the server and the slow retu

[zfs-discuss] zpool replace complete but old drives not detached

2009-09-06 Thread Albert Chin
$ cat /etc/release Solaris Express Community Edition snv_114 X86 Copyright 2009 Sun Microsystems, Inc. All Rights Reserved. Use is subject to license terms. Assembled 04 May 2009 I recently replaced two drives in a