Re: [zfs-discuss] zfs with PERC 6/i card?

2009-03-03 Thread Bryant Eadon
Julius Roberts wrote: I would like to hear if anyone is using ZFS with this card and how you set it up, and what, if any, issues you've had with that set up. However I would expect that if you could present 8 raid0 luns to the host then that should be at least a decent config to start using for

Re: [zfs-discuss] Does your device honor write barriers?

2009-02-10 Thread Bryant Eadon
Toby Thain wrote: On 10-Feb-09, at 10:36 PM, Frank Cusack wrote: On February 10, 2009 4:41:35 PM -0800 Jeff Bonwick wrote: Not if the disk drive just *ignores* barrier and flush-cache commands and returns success. Some consumer drives really do exactly that. ouch. If it were possible to d

[zfs-discuss] Does your device honor write barriers?

2009-02-10 Thread Bryant Eadon
All, I've been following the thread titled 'ZFS: unreliable for professional use' and I've learned a few things. Put simply, external devices don't behave like internal ones. >From JB : >The good news is that ZFS is getting popular enough on consumer-grade >hardware. The bad news is that s

Re: [zfs-discuss] how to fix zpool with corrupted disk?

2009-01-26 Thread Bryant Eadon
Jakov Sosic wrote: > Hi guys! > > I'm doing series of tests on ZFS before putting it into production on several > machines, and I've come to a dead end. I have two disks in mirror (rpool). > Intentionally, I corrupt data on second disk: > > # dd if=/dev/urandom of=/dev/rdsk/c0d1t0 bs=512 count=

[zfs-discuss] danging dbufs in ZFS v6 , FreeBSD 7.1

2009-01-24 Thread Bryant Eadon
First, I've been very impressed with ZFS performance and notification of problems. It was because of this early notification that I should have been able to salvage an array properly! Onto the problem I'm hoping you can solve ! : Running on a 64bit platform with 5, 500GB HDDs in a basic raidz