Re: [zfs-discuss] zfs performance cliff when over 80% util, still occuring when pool in 6

2009-09-07 Thread John-Paul Drawneek
Final rant on this.

Managed to get the box re-installed and the performance issue has vanished.

So there is a performance bug in zfs some where.

Not sure to put in a bug log as I can't now provide any more information.
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Re: [zfs-discuss] zfs performance cliff when over 80% util, still occuring when pool in 6

2009-09-03 Thread John-Paul Drawneek
So I have poked and prodded the disks and they both seem fine.

Any yet my rpool is still slow.

Any ideas on what do do now.
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Re: [zfs-discuss] zfs performance cliff when over 80% util, still occuring when pool in 6

2009-09-02 Thread John-Paul Drawneek
No joy.

c1t0d0 89 MB/sec
c1t1d0 89 MB/sec
c2t0d0 123 MB/sec
c2t1d0 123 MB/sec

First two are the rpool
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Re: [zfs-discuss] zfs performance cliff when over 80% util, still occuring when pool in 6

2009-09-01 Thread John-Paul Drawneek
i did not migrate my disks.

I now have 2 pools - rpool is at 60% as is still dog slow.

Also scrubbing the rpool causes the box to lock up.
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[zfs-discuss] zfs performance cliff when over 80% util, still occuring when pool in 60% ?

2009-08-30 Thread John-Paul Drawneek
Ok had a pool which got full - so performance tanked.

Ran off and got some more disks to create a new pool to put all the extra data.

Got the original pool down to 60% util, but the performance is still bad.

Any ideas on how to get the performance back?

Bad news is that the pool in question is rpool.

And this is really starting to effect my productivity on the box.
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Re: [zfs-discuss] j4200 drive carriers

2009-01-31 Thread John-Paul Drawneek
the J series is far to new to be hitting ebay yet.

Any alot of people will not be buying the J series for obvious reasons
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Re: [zfs-discuss] luactivate: how to fix things from boot:net?

2008-11-02 Thread John-Paul Drawneek
boot -L

gives you a list of boot able zfs - pick the none broke one to get to 
luactivate etc...
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Re: [zfs-discuss] ZFS + OpenSolaris for home NAS?

2008-10-24 Thread John-Paul Drawneek
Nvidia 5 series for amd - got good support for the chipset
Intel boards - as ICH9 drivers are in
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Re: [zfs-discuss] sata on sparc

2008-10-24 Thread John-Paul Drawneek
you have buy a lsi sas card.

not cheap - around 100 GBP
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Re: [zfs-discuss] ZFS + OpenSolaris for home NAS?

2008-10-23 Thread John-Paul Drawneek
It depends on what your doing.

I got a AMD Sempron Processor LE-1100 (1.9Ghz) doing NAS for mythtv and seems 
to do ok.

If the board you quote is what your getting I think it is 64bit chip - intel 
site says its a Atom 330.

Solaris will should use all its cores/threads - intel have added a load of code 
to opensolaris not sure if Atom stuff was in it.

Think your out of luck for PCI SATA cards - not seen anything good about it.
Sil hardware is buggy, but its got the driver support.
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Re: [zfs-discuss] Thumper, ZFS and performance

2008-08-12 Thread John-Paul Drawneek
Config 1: as its got 4 vdev so it will stripe it across them vs the 1 vdev for 
Config 2  - for speed

reliability - Both Config probably the same, sods law states second disk to 
fail will be in the same vdev.

If you want the space Config 2 but with raidz2

If you want speed - 24 mirrors

See other post for more knowledgeable explanations
 
 
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Re: [zfs-discuss] NFS shared subtree not visible

2008-07-13 Thread John-Paul Drawneek
Yep - each zfs file system has its own nfs mount point.

Will mirror mount it all works like magic and is pretty nice.

Can see it being a git for linux, I wonder when it will mirror mount will get 
implemented in linux.
 
 
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Re: [zfs-discuss] Sparc rpool mirror failed

2008-06-20 Thread John-Paul Drawneek
These 18gb disks?

There a bug which is fixed in b92 which could be causing this?
 
 
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Re: [zfs-discuss] Hardware RAID vs. ZFS RAID

2008-02-02 Thread John-Paul Drawneek
 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1
 
 Vincent Fox wrote:
 | So the point is,  a JBOD with a flash drive in one
 (or two to mirror
 the ZIL) of the slots would be a lot SIMPLER.
 
 I guess a USB pendrive would be slower than a
 harddisk. Bad performance
 for the ZIL.
 

Does any one have any data on this?


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Re: [zfs-discuss] ZFS Home NAS - Configuration Questions

2008-01-24 Thread John-Paul Drawneek
Ok I am not an expert - just done some playing about.

Option 1) I have done this - i had 4x300gb disks and one more in the post, i 
could not wait to build my raidz2 so i used a 73gb which was spare - what it 
gave me was a raidz2 pool of 5x73gb.
The warning is there to ask you if you really want to lose all the space.

zpool replace 73gb 300gb disk worked fine and i went to a pool with 5x300gb

Option 2) Done this too with some 18gb mirror and a 73gb mirror, seem to work 
fine no performance drops.  I guess the stripe will only last for 18gb then 
drop to a single disk performance

Option 3) Not sure about this one, not had chance to play with this feature

Hope this helps a bit

Also see http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide
 
 
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Re: [zfs-discuss] Replacing Devices in a Storage Pool

2008-01-24 Thread John-Paul Drawneek
You do not waste the new space

zfs seems to always work of the lowest device - so when you replace the disks 
with larger ones it increases the mirror size to these new drives as thats the 
new smallest drive.
 
 
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Re: [zfs-discuss] Mirrrors with Uneven Drives!?

2008-01-24 Thread John-Paul Drawneek
Yep its possible

But you will only have a mirror of the lowest disk.

3way mirror is just copying the data onto an extra disk
 
 
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Re: [zfs-discuss] ZFS Home NAS - Configuration Questions

2008-01-24 Thread John-Paul Drawneek
I use the supermicro 8 port pci-x card, its about 70 pounds in the uk

Works fine on my home nas box which uses the Asus M2N32 WS Pro, which i can use 
6 sata of the nvidia chipset giving me 14 usable sata with the solaris native 
sata support
 
 
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Re: [zfs-discuss] Mirrrors with Uneven Drives!?

2008-01-24 Thread John-Paul Drawneek
yep thats what mirroring does
 
 
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Re: [zfs-discuss] ZFS Solaris 10 Update 4 Patches

2007-09-20 Thread John-Paul Drawneek
yep.

but it said that the pools were upto date with the system on 3.

zpool upgrade says the system just has version 3

also patch 120272-12 has been pulled which 120011-14 depends on yay
 
 
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Re: [zfs-discuss] 8+2 or 8+1+spare?

2007-07-09 Thread John-Paul Drawneek
Your data gets striped across the two sets so what you get is a raidz stripe 
giving you the 2x faster.

tank
---raidz
--devices
---raidz
--devices

sorry for the diagram.

So you got your zpool tank with raidz stripe.
 
 
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[zfs-discuss] Re: 6 disk raidz2 or 3 stripe 2 way mirror

2007-06-17 Thread John-Paul Drawneek
ok if its just storing stuff raidz2 is probably the best use of space.
raidz2 on 5 disk and one spare - this can take 3 disk failing before you lose 
your data.

The three strip mirror will give you nice performance but from the sounds of it 
you don't need it.
 
 
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[zfs-discuss] Re: file server performance - slow 64 bit sparc or fast 32 bit intel

2007-06-17 Thread John-Paul Drawneek
The Pentium 4 D have 64bit in them (ok not the bottom one)

So you can have your Pentium 4D running in 64bit mode.

Are you buying both kit or do you already have one of these boxes?

Also how many users are going to be using this file server?
 
 
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[zfs-discuss] Re: New zfs pr0n server :)))

2007-05-20 Thread John-Paul Drawneek
What sata controllers are you using?
 
 
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[zfs-discuss] Re: AVS replication vs ZFS send recieve for odd sized volume pairs

2007-05-18 Thread John-Paul Drawneek
Yes, i am also interested in this.

We can't afford two super fast setup so we are looking at having a huge pile 
sata to act as a real time  backup for all our streams.

So what can AVS do and its limitations are?

Would a just using zfs send and receive do or does AVS make it all seamless?
 
 
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[zfs-discuss] Re: ZFS layout for 10 disk?

2007-03-23 Thread John-Paul Drawneek
 Consider that 18GByte disks are old and their failure
 rate will
 increase dramatically over the next few years.  

I guess thats why i am asking about raidz and mirrors, not just creating a huge 
stripe them

 Do something to
 have redundancy.  If raidz2 works for your workload,
 I'd go with that.
 
Well i thinks so, the file system is currently on a raidz with three disk with 
no complains


[b]Food for thought[/b]

How do you fit sata into a scsi array

[b]More food for thought[/b]

So how do these two 500gb HDD work then?  Do i just leave them on the side and 
the magic of ISCSI allows then to work and shared between boxes?

Sorry for the gitty response but i am in the uk (see my details) so this 160 
pound idea of yours is not 160 pounds.

It is cost of the hdd plus the new box that can take them, so its a nice cheap 
option then :)

 BTW, I was just at Fry's, new 500 GByte Seagate
 drives are $180.
 Prices for new disks tend to approach $150 (USD)
 after which they
 are replaced by larger drives and the inventory is
 price reduced
 until gone. A 2-new disk mirror will be more reliable
 than any
 reasonable combination of 5-year old disks. Food for
 thought.
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[zfs-discuss] Re: Re: ZFS layout for 10 disk?

2007-03-23 Thread John-Paul Drawneek
Just to clarify

pool1 - 5 disk raidz2
pool2 - 4 disk raid 10

spare for both pools

Is that correct?
 
 
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[zfs-discuss] ZFS layout for 10 disk?

2007-03-22 Thread John-Paul Drawneek
got a 12 disk system - all 18gb
2 mirror for boot, now what to do with the rest?

The storage is to be used for user space, web stuff and to store anything else 
(dump for data).

I could do 5 mirrors, but thats a wasting quite a bit of space.

Was thinking about raidz2, as its almost as reliable and better for space.

Should i do 9 disk raidz2 with a spare, or could i do two raidz2 to get a bit 
of performance?

Only done tests with striped mirrors which seems to give it a boost, so is it 
worth it with a raidz2 of this small size?

Thanks for any help
 
 
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