Re: [zfs-discuss] ZFS, ESX ,and NFS. oh my!

2009-07-02 Thread Tristan Ball
According to the link bellow, VMWare will only use a single TCP session for NFS data, which means you're unlikely to get it to travel down more than one interface on the VMware side, even if you can find a way to do it on the solaris side.

Re: [zfs-discuss] ZFS write I/O stalls

2009-07-03 Thread Tristan Ball
Is the system otherwise responsive during the zfs sync cycles? I ask because I think I'm seeing a similar thing - except that it's not only other writers that block , it seems like other interrupts are blocked. Pinging my zfs server in 1s intervals results in large delays while the system

Re: [zfs-discuss] SSD's and ZFS...

2009-07-24 Thread Tristan Ball
It just so happens I have one of the 128G and two of the 32G versions in my drawer, waiting to go into our DR disk array when it arrives. I dropped the 128G into a spare Dell 745 (2GB ram) and used a Ubuntu liveCD to run some simple iozone tests on it. I had some stability issues with Iozone

Re: [zfs-discuss] SSD's and ZFS...

2009-07-25 Thread Tristan Ball
The 128G Supertalent Ultradrive ME. The larger version of the drive mentioned in the original post. Sorry, should have made that a little clearer. :-) T Kyle McDonald wrote: Tristan Ball wrote: It just so happens I have one of the 128G and two of the 32G versions in my drawer, waiting to go

Re: [zfs-discuss] SSD's and ZFS...

2009-07-25 Thread Tristan Ball
Bob Friesenhahn wrote: On Fri, 24 Jul 2009, Tristan Ball wrote: I've used 8K IO sizes for all the stage one tests - I know I might get it to go faster with a larger size, but I like to know how well systems will do when I treat them badly! The Stage_1_Ops_thru_run is interesting. 2000+ ops

Re: [zfs-discuss] feature proposal

2009-07-31 Thread Tristan Ball
Because it means you can create zfs snapshots from a non solaris/non local client... Like a linux nfs client, or a windows cifs client. T dick hoogendijk wrote: On Wed, 29 Jul 2009 17:34:53 -0700 Roman V Shaposhnik r...@sun.com wrote: On the read-write front: wouldn't it be cool to be

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-03 Thread Tristan Ball
Were those tests you mentioned on Raid-5/6/Raid-Z/z2 or on Mirrored volumes of some kind? We've found here that VM loads on raid 10 sata volumes, with relatively high numbers of disks actually works pretty well - and depending size of the drives, you quite often get more usuable space too. ;-)

[zfs-discuss] zdb CKSUM stats vary?

2009-08-05 Thread Tristan Ball
Can anyone tell me why successive runs of zdb would show very different values for the cksum column? I had thought these counters were since last clear but that doesn't appear to be the case? If I run zdb poolname, right at the end of the output, it lists pool statistics:

Re: [zfs-discuss] ZFS, ESX ,and NFS. oh my!

2009-08-13 Thread Tristan Ball
In my testing, vmware doesn't see the vm1 and vm2 filesystems. Vmware doesn't have an automounter, and doesn't traverse NFS4 sub-mounts (whatever the formal name for them is). Actually, it doesn't support NFS4 at all! Regards, Tristan. -Original Message- From:

Re: [zfs-discuss] ZFS Tutorial at LISA09

2009-08-21 Thread Tristan Ball
Marcus wrote: - how to best handle broken disks/controllers without ZFS hanging or being unable to replace the disk A definite +1 here. I realise it's something that Sun probably consider fixed by the disk/controller drivers, however many of us are using opensolaris on non-sun hardware,

Re: [zfs-discuss] Using consumer drives in a zraid2

2009-08-25 Thread Tristan Ball
I guess it depends on whether or not you class the various Raid Edition drives as consumer? :-) My one concern with these RE drives is that because they will return errors early rather than retry is that they may fault when a normal consumer drive would have returned the data eventually. If the

Re: [zfs-discuss] Using consumer drives in a zraid2

2009-08-25 Thread Tristan Ball
Tristan. From: Tim Cook [mailto:t...@cook.ms] Sent: Wednesday, 26 August 2009 2:08 PM To: Tristan Ball Cc: thomas; zfs-discuss@opensolaris.org Subject: Re: [zfs-discuss] Using consumer drives in a zraid2 On Tue, Aug 25, 2009 at 10:56 PM

Re: [zfs-discuss] Using consumer drives in a zraid2

2009-08-25 Thread Tristan Ball
:-) ) From: Tim Cook [mailto:t...@cook.ms] Sent: Wednesday, 26 August 2009 3:01 PM To: Tristan Ball Cc: thomas; zfs-discuss@opensolaris.org Subject: Re: [zfs-discuss] Using consumer drives in a zraid2 On Tue, Aug 25, 2009 at 11:38 PM, Tristan Ball tristan.b

Re: [zfs-discuss] Using consumer drives in a zraid2

2009-08-26 Thread Tristan Ball
the relative cost. For those periods that it is effective, it really makes a difference too! T. From: Tim Cook [mailto:t...@cook.ms] Sent: Wednesday, 26 August 2009 3:48 PM To: Tristan Ball Cc: zfs-discuss@opensolaris.org Subject: Re: [zfs-discuss] Using consumer

Re: [zfs-discuss] alternative hardware configurations for zfs

2009-09-11 Thread Tristan Ball
How long have you had them in production? Were you able to adjust the TLER settings from within solaris? Thanks, Tristan. -Original Message- From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-boun...@opensolaris.org] On Behalf Of Markus Kovero Sent: Friday, 11

[zfs-discuss] ZFS Recv slow with high CPU

2009-09-20 Thread Tristan Ball
Hi Everyone, I have a couple of systems running opensolaris b118, one of which sends hourly snapshots to the other. This has been working well, however as of today, the receiving zfs process has started running extremely slowly, and is running at 100% CPU on one core, completely in kernel

Re: [zfs-discuss] ZFS Recv slow with high CPU

2009-09-22 Thread Tristan Ball
limitation I've had with using it as a opensolaris storage system. Regards, Tristan. Matthew Ahrens wrote: Tristan Ball wrote: Hi Everyone, I have a couple of systems running opensolaris b118, one of which sends hourly snapshots to the other. This has been working well, however as of today

Re: [zfs-discuss] Setting up an SSD ZIL - Need A Reality Check

2009-10-21 Thread Tristan Ball
What makes you say that the X25-E's cache can't be disabled or flushed? The net seems to be full of references to people who are disabling the cache, or flushing it frequently, and then complaining about the performance! T Frédéric VANNIERE wrote: The ZIL is a write-only log that is only

Re: [zfs-discuss] dedupe is in

2009-11-02 Thread Tristan Ball
This is truly awesome news! What's the best way to dedup existing datasets? Will send/recv work, or do we just cp things around? Regards, Tristan Jeff Bonwick wrote: Terrific! Can't wait to read the man pages / blogs about how to use it... Just posted one:

[zfs-discuss] More Dedupe Questions...

2009-11-02 Thread Tristan Ball
I'm curious as to how send/recv intersects with dedupe... if I send/recv a deduped filesystem, is the data sent it it's de-duped form, ie just sent once, followed by the pointers for subsequent dupe data, or is the the data sent in expanded form, with the recv side system then having to redo

Re: [zfs-discuss] Snapshot question

2009-11-13 Thread Tristan Ball
I think the exception may be when doing a recursive snapshot - ZFS appears to halt IO so that it can take all the snapshots at the same instant. At least, that's what it looked like to me. I've got an Opensolaris ZFS box providing NFS to VMWare, and I was getting SCSI timeout's within the

[zfs-discuss] ARC not using all available RAM?

2009-12-20 Thread Tristan Ball
I've got an opensolaris snv_118 machine that does nothing except serve up NFS and ISCSI. The machine has 8G of ram, and I've got an 80G SSD as L2ARC. The ARC on this machine is currently sitting at around 2G, the kernel is using around 5G, and I've got about 1G free. I've pulled this from a

Re: [zfs-discuss] ARC not using all available RAM?

2009-12-20 Thread Tristan Ball
Bob Friesenhahn wrote: On Sun, 20 Dec 2009, Richard Elling wrote: Given that I don't believe there is any other memory pressure on the system, why isn't the ARC using that last 1G of ram? Simon says, don't do that ? ;-) Yes, primarily since if there is no more memory immediately

[zfs-discuss] FW: ARC not using all available RAM?

2009-12-20 Thread Tristan Ball
Oops, should have sent to the list... Richard Elling wrote: On Dec 20, 2009, at 12:25 PM, Tristan Ball wrote: I've got an opensolaris snv_118 machine that does nothing except serve up NFS and ISCSI. The machine has 8G of ram, and I've got an 80G SSD as L2ARC. The ARC on this machine

Re: [zfs-discuss] Thin device support in ZFS?

2009-12-30 Thread Tristan Ball
To some extent it already does. If what you're talking about is filesystems/datasets, then all filesystems within a pool share the same free space, which is functionally very similar to each filesystem within the pool being thin-provisioned. To get a thick filesystem, you'd need to set at

Re: [zfs-discuss] Thin device support in ZFS?

2009-12-30 Thread Tristan Ball
Ack.. I've just re-read your original post. :-) It's clear you are talking about support for thin devices behind the pool, not features inside the pool itself. Mea culpa. So I guess we wait for trim to be fully supported.. :-) T. On 31/12/2009 8:09 AM, Tristan Ball wrote: To some

Re: [zfs-discuss] rethinking RaidZ and Record size

2010-01-05 Thread Tristan Ball
On 6/01/2010 3:00 AM, Roch wrote: Richard Elling writes: On Jan 3, 2010, at 11:27 PM, matthew patton wrote: I find it baffling that RaidZ(2,3) was designed to split a record- size block into N (N=# of member devices) pieces and send the uselessly tiny requests to

Re: [zfs-discuss] rethinking RaidZ and Record size

2010-01-05 Thread Tristan Ball
On 6/01/2010 7:19 AM, Richard Elling wrote: If you are doing small, random reads on dozens of TB of data, then you've got a much bigger problem on your hands... kinda like counting grains of sand on the beach during low tide :-). Hopefully, you do not have to randomly update that data

Re: [zfs-discuss] need a few suggestions for a poor man's ZIL/SLOG device

2010-01-05 Thread Tristan Ball
For those searching list archives, the SNV125-S2/40GB given below is not based on the Intel controller. I queried Kingston directly about this because there appears to be so much confusion (and I'm considering using these drives!), and I got back that: The V series uses a JMicron Controller The

Re: [zfs-discuss] need a few suggestions for a poor man's ZIL/SLOG device

2010-01-06 Thread Tristan Ball
, 2010 at 11:57 PM, Eric D. Mudama edmud...@bounceswoosh.org wrote: On Wed, Jan 6 at 14:56, Tristan Ball wrote: For those searching list archives, the SNV125-S2/40GB given below is not based on the Intel controller. I queried Kingston directly about this because there appears to be so

Re: [zfs-discuss] New ZFS Intent Log (ZIL) device available - Beta program now open!

2010-01-13 Thread Tristan Ball
That's very interesting tech you've got there... :-) I have a couple of questions, with apologies in advance if I missed them on the website.. I see the PCI card has an external power connector - can you explain how/why that's required, as opposed to using an on card battery or similar. What

Re: [zfs-discuss] New ZFS Intent Log (ZIL) device available - Beta program now open!

2010-01-13 Thread Tristan Ball
Thanks for the detailed response - further questions inline... Christopher George wrote: Excellent questions! I see the PCI card has an external power connector - can you explain how/why that's required, as opposed to using an on card battery or similar. DDRdrive X1 ZIL

[zfs-discuss] Recordsize...

2010-01-17 Thread Tristan Ball
Hi Everyone, Is it possible to use send/recv to change the recordsize, or does each file need to be individually recreated/copied within a given dataset? Is there a way to check the recordsize of a given file, assuming that the filesystems recordsize was changed at some point? Also - Am I

Re: [zfs-discuss] Is LSI SAS3081E-R suitable for a ZFS NAS ?

2010-01-25 Thread Tristan Ball
It may depend on the firmware you're running. We've got a SAS1068E based card in Dell R710 at the moment, connected to an external SAS JBOD, and we did have problems with the as shipped firmware. However we've upgraded that, and _so far_ haven't had further issues. I didn't do the upgrade