Re: [zfs-discuss] Confused about consumer drives and zfs can someone help?

2010-07-24 Thread Dave
I've been looking at using consumer 2.5" drives also, I think the ones I've settled on are the hitachi 7K500 500 GB. These are 7200 rpm, I'm concerned the 5400's might be a little too low performance wise. The main reasons for hitachi were performance seems to be among the top 2 or 3 in the lapt

Re: [zfs-discuss] NFS performance?

2010-07-24 Thread Garrett D'Amore
On Sat, 2010-07-24 at 19:54 -0400, Edward Ned Harvey wrote: > > From: Garrett D'Amore [mailto:garr...@nexenta.com] > > > > Fundamentally, my recommendation is to choose NFS if your clients can > > use it. You'll get a lot of potential advantages in the NFS/zfs > > integration, so better performan

Re: [zfs-discuss] Confused about consumer drives and zfs can someone help?

2010-07-24 Thread Richard Elling
On Jul 24, 2010, at 5:37 PM, JavaWebDev wrote: > On 7/24/2010 8:12 PM, Edward Ned Harvey wrote: >>> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- >>> boun...@opensolaris.org] On Behalf Of Russ Price >>> >>> Good advice - ZFS can use quite a lot of CPU cycles. A low-end AMD >>> q

Re: [zfs-discuss] snapshot .zfs folder can only be seen in the top of a file system?

2010-07-24 Thread Eric Schrock
On Jul 24, 2010, at 12:53 AM, Fred Liu wrote: >> >> Disagree. The benefits are not as great as advertised. > > Is it ZFS intrinsic flaw to realize it? I have lots of users who are addicted > to NetApp's snapshot so much! The tricky part is exporting FIDs over NFS in a way that allows you to 'c

Re: [zfs-discuss] Confused about consumer drives and zfs can someone help?

2010-07-24 Thread JavaWebDev
On 7/24/2010 8:12 PM, Edward Ned Harvey wrote: From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- boun...@opensolaris.org] On Behalf Of Russ Price Good advice - ZFS can use quite a lot of CPU cycles. A low-end AMD quad-core is I know "a lot of CPU cycles" is a relative term. But I

Re: [zfs-discuss] Confused about consumer drives and zfs can someone help?

2010-07-24 Thread Edward Ned Harvey
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Russ Price > > Good advice - ZFS can use quite a lot of CPU cycles. A low-end AMD > quad-core is I know "a lot of CPU cycles" is a relative term. But I never notice CPU utilization, even unde

Re: [zfs-discuss] snapshot .zfs folder can only be seen in the top of a file system?

2010-07-24 Thread Edward Ned Harvey
> From: Fred Liu [mailto:fred_...@issi.com] > > But too many file systems may be an issue for management and also > normal user cannot create file system. > I think it should go like what NetApp's snapshot does. > It is a pity. For Windows/CIFS clients, the solution I use is: ln -s .zfs/s

Re: [zfs-discuss] NFS performance?

2010-07-24 Thread Edward Ned Harvey
> From: Garrett D'Amore [mailto:garr...@nexenta.com] > > Fundamentally, my recommendation is to choose NFS if your clients can > use it. You'll get a lot of potential advantages in the NFS/zfs > integration, so better performance. Plus you can serve multiple > clients, etc. > > The only reason

Re: [zfs-discuss] 1tb SATA drives

2010-07-24 Thread Haudy Kazemi
But if it were just the difference between 5min freeze when a drive fails, and 1min freeze when a drive fails, I don't see that anyone would care---both are bad enough to invoke upper-layer application timeouts of iSCSI connections and load balancers, but not disastrous. but it's not. ZFS does

[zfs-discuss] Filesystem hang when 100% full

2010-07-24 Thread Edward Ned Harvey
I remember asking about this a long time ago, and everybody seemed to think it was a non-issue. The vague and unclearly reported rumor that ZFS behaves poorly when it's 100% full. Well now I have one really solid data point to confirm it. And possibly how to reproduce it, avoid it, and prevent i

[zfs-discuss] ZFS v10 crisis alert - has a zfs subdirectory disappeared?

2010-07-24 Thread Dr Lou
Had a weird one yesterday, so am looking for some insight... At the very least, a deeper understanding of this will contribute to our administration skills! Have a sun4u server with one zpool under which we've created a number of zfses. Something like: /pool/zfs1 .../zfs2 .../zfs3 H

Re: [zfs-discuss] snapshot .zfs folder can only be seen in the top of a file system?

2010-07-24 Thread David Magda
On Jul 24, 2010, at 01:20, Sam Fourman Jr. wrote: I think it should go like what NetApp's snapshot does. There was a long thread on this topic earlier this year. Please see the archives for details. Do you have the URL? I don't have a long subscription I too do not have a long subscrip

Re: [zfs-discuss] Confused about consumer drives and zfs can someone help?

2010-07-24 Thread Russ Price
On 07/23/2010 02:39 AM, tomwaters wrote: > Re the CPU, do not go low power Atom etc, go a newish > Core2 duo...the power differential at idle is bugger all > and when you want to use the nas, ZFS will make good use > of the CPU. Good advice - ZFS can use quite a lot of CPU cycles. A low-end AMD q

[zfs-discuss] Severe ZFS corruption, help needed.

2010-07-24 Thread Voloymyr Kostyrko
I'm running FreeBSD 8.1 with ZFS v15. Recently some time after moving my mirrored pool from one device to another system crashes. From that time on zpool cannot be used/imported - any attempt fails with: solaris assert: sm->space + size <= sm->size, file: /usr/src/sys/moules/zfs/../../cddl/cont