[zfs-discuss] recommendations on adding vdev to raidz zpool

2008-10-25 Thread Peter Baumgartner
I have a 7x150GB drive (+1 spare) raidz pool that I need to expand. There are 6 open drive bays, so I bought 6 300GB drives and went to add them as a raidz vdev to the existing zpool, but I didn't realize the raidz vdevs needed to have the same number of drives. (why is that?) My plan now is to, c

Re: [zfs-discuss] diagnosing read performance problem

2008-10-25 Thread Nigel Smith
Hi Matt What chipset is your PCI network card? (obviously, it not Intel, but what is it?) Do you know which driver the card is using? You say '..The system was fine for a couple of weeks..'. At that point did you change any software - do any updates or upgrades? For instance, did you upgrade to a

Re: [zfs-discuss] ZFS + OpenSolaris for home NAS?

2008-10-25 Thread Al Hopper
On Thu, Oct 23, 2008 at 4:04 PM, Peter Bridge <[EMAIL PROTECTED]> wrote: > I'm looking to buy some new hardware to build a home ZFS based NAS. I know > ZFS can be quite CPU/mem hungry and I'd appreciate some opinions on the > following combination: > > Intel Essential Series D945GCLF2 > Kingston

Re: [zfs-discuss] Verify files' checksums

2008-10-25 Thread Marcus Sundman
Ian Collins <[EMAIL PROTECTED]> wrote: > Marcus Sundman wrote: > > Are these I/O errors written to stdout or stderr or where? > > Yes, stderr. OK, good, thanks. > You will not be able top open the file. What?! Even if there are errors I want to still be able to read the file to salvage what can

Re: [zfs-discuss] Verify files' checksums

2008-10-25 Thread Ian Collins
Marcus Sundman wrote: > Ian Collins <[EMAIL PROTECTED]> wrote: > >> Marcus Sundman wrote: >> >>> I couldn't see anything there describing either how to verify the >>> checksums of individual files or why that would be impossible. >>> >> If you can read the file, the checksum is OK. I

Re: [zfs-discuss] Verify files' checksums

2008-10-25 Thread Marcus Sundman
Ian Collins <[EMAIL PROTECTED]> wrote: > Marcus Sundman wrote: > > I couldn't see anything there describing either how to verify the > > checksums of individual files or why that would be impossible. > > If you can read the file, the checksum is OK. If it were not, you > would get an I/O error att

Re: [zfs-discuss] Verify files' checksums

2008-10-25 Thread Marcus Sundman
"Scott Laird" <[EMAIL PROTECTED]> wrote: > On Sat, Oct 25, 2008 at 1:57 PM, Marcus Sundman <[EMAIL PROTECTED]> > wrote: > > I don't want to scrub several TiB of data just to verify a 2 MiB > > file. I want to verify just the data of that file. (Well, I don't > > mind also verifying whatever other d

Re: [zfs-discuss] Verify files' checksums

2008-10-25 Thread Ian Collins
Marcus Sundman wrote: > > I couldn't see anything there describing either how to verify the > checksums of individual files or why that would be impossible. If you can read the file, the checksum is OK. If it were not, you would get an I/O error attempting to read it. -- Ian. ___

Re: [zfs-discuss] Verify files' checksums

2008-10-25 Thread Scott Laird
On Sat, Oct 25, 2008 at 1:57 PM, Marcus Sundman <[EMAIL PROTECTED]> wrote: > I don't want to scrub several TiB of data just to verify a 2 MiB file. I > want to verify just the data of that file. (Well, I don't mind also > verifying whatever other data happens to be in the same blocks.) Just read t

Re: [zfs-discuss] Verify files' checksums

2008-10-25 Thread Marcus Sundman
"Johan Hartzenberg" <[EMAIL PROTECTED]> wrote: > On Sat, Oct 25, 2008 at 6:49 PM, Marcus Sundman <[EMAIL PROTECTED]> > wrote: > > Richard Elling <[EMAIL PROTECTED]> wrote: > > > Marcus Sundman wrote: > > > > How can I verify the checksums for a specific file? > > > > > > ZFS doesn't checksum files.

Re: [zfs-discuss] Verify files' checksums

2008-10-25 Thread Johan Hartzenberg
On Sat, Oct 25, 2008 at 6:49 PM, Marcus Sundman <[EMAIL PROTECTED]> wrote: > Richard Elling <[EMAIL PROTECTED]> wrote: > > Marcus Sundman wrote: > > > How can I verify the checksums for a specific file? > > > > ZFS doesn't checksum files. > > AFAIK ZFS checksums all data, including the contents of

Re: [zfs-discuss] Verify files' checksums

2008-10-25 Thread Marcus Sundman
Richard Elling <[EMAIL PROTECTED]> wrote: > Marcus Sundman wrote: > > How can I verify the checksums for a specific file? > > ZFS doesn't checksum files. AFAIK ZFS checksums all data, including the contents of files. > So a file does not have a checksum to verify. I wrote "checksums" (plural) f

Re: [zfs-discuss] diagnosing read performance problem

2008-10-25 Thread Matt Harrison
On Sat, Oct 25, 2008 at 11:10:42AM -0500, Bob Friesenhahn wrote: > Hmmm, this may indicate that there is an ethernet cable problem. Use > 'netstat -I interface' (where interface is the interface name shown by > 'ifconfig -a') to see if the interface error count is increasing. If you > are usin

Re: [zfs-discuss] diagnosing read performance problem

2008-10-25 Thread Bob Friesenhahn
On Sat, 25 Oct 2008, Matt Harrison wrote: > > The onboard ones haven't so much died (they still allow me to use them > from the OS) but they just won't start up or accept there is a cable > plugged in. The PCI nic does seem to be working and transfers to/from > the server seem ok except when there'

Re: [zfs-discuss] sata on sparc

2008-10-25 Thread Brian Hechinger
On Fri, Oct 24, 2008 at 01:03:32PM -0700, John-Paul Drawneek wrote: > you have buy a lsi sas card. Which work *great* by the way. > not cheap - around 100 GBP Really? I picked mine up for $68US including shipping and the SAS<->SATA breakout cable. Needless to say I haven't looked at prices lat

Re: [zfs-discuss] diagnosing read performance problem

2008-10-25 Thread Matt Harrison
Bob Friesenhahn wrote: > Other people on this list who experienced the exact same problem > ultimately determined that the problem was with the network card. I > recall that Intel NICs were the recommended solution. > > Note that 100MBit is now considered to be a slow link and PCI is also > consi

Re: [zfs-discuss] Disabling COMMIT at NFS level, or disabling ZIL on a per-filesystem basis

2008-10-25 Thread Roch Bourbonnais
Le 23 oct. 08 à 05:40, Constantin Gonzalez a écrit : > Hi, > > Bob Friesenhahn wrote: >> On Wed, 22 Oct 2008, Neil Perrin wrote: >>> On 10/22/08 10:26, Constantin Gonzalez wrote: 3. Disable ZIL[1]. This is of course evil, but one customer pointed out to me that if a tar xvf we