Re: Really large drives (was Re: Is there a badblocks-equivalent for OpenBSD?)

2008-04-29 Thread Douglas A. Tutty
On Sun, Apr 20, 2008 at 09:35:32PM +0200, Louis V. Lambrecht wrote: Yeah! Got a 500Gig eSATA mounted, 6 slices. The problem is not how to address the drive, the problem is to backup all that data. That is, eventually, 4 gig per DVD, or XFS, or a cluster. My main database I can't live

Re: Really large drives (was Re: Is there a badblocks-equivalent for OpenBSD?)

2008-04-21 Thread David Gwynne
On 21/04/2008, at 1:53 PM, Matthew Weigel wrote: David Gwynne wrote: solaris suffers from this problem. you cant use big disks with 32bit solaris kernels. For UFS, at least, but doesn't ZFS on i386 (not amd64) scale? this is a block layer problem, nothing to do with the filesystems. if

Re: Really large drives (was Re: Is there a badblocks-equivalent for OpenBSD?)

2008-04-21 Thread Janne Johansson
On Sun, 2008-04-20 at 22:53 -0500, Matthew Weigel wrote: David Gwynne wrote: solaris suffers from this problem. you cant use big disks with 32bit solaris kernels. For UFS, at least, but doesn't ZFS on i386 (not amd64) scale? The filesystem yes, but the block addressing no. I had to split

Re: Is there a badblocks-equivalent for OpenBSD?

2008-04-21 Thread Stuart Henderson
On 2008-04-21, Siegbert Marschall [EMAIL PROTECTED] wrote: i think there are some companies out there having collected a lot more smart-data the we do, wonder what they do with it... ;) in the case of Google, they wrote a paper, Failure Trends in a Large Disk Drive Population (Pinheiro, Weber,

Re: Really large drives (was Re: Is there a badblocks-equivalent for OpenBSD?)

2008-04-21 Thread Otto Moerbeek
On Sun, Apr 20, 2008 at 03:35:13PM -0400, Chris Zakelj wrote: Matthew Weigel wrote: Chris Zakelj wrote: ... I'm wondering if thought is being given on how to make the physical size (not filesystem... I totally understand why those should be kept small) limitation of

Re: Is there a badblocks-equivalent for OpenBSD?

2008-04-20 Thread Siegbert Marschall
Hello, I don't know if anyone brought this up, and I hate to state the obvious, but if you're getting bad blocks then the hard drive has exhausted its ability to deal with them on its own and should be replaced. Otherwise you'll see data loss/corruption and a higher probability of a total

Re: Is there a badblocks-equivalent for OpenBSD?

2008-04-20 Thread Travers Buda
* Siegbert Marschall [EMAIL PROTECTED] [2008-04-20 11:19:31]: Hello, I don't know if anyone brought this up, and I hate to state the obvious, but if you're getting bad blocks then the hard drive has exhausted its ability to deal with them on its own and should be replaced. Otherwise

Really large drives (was Re: Is there a badblocks-equivalent for OpenBSD?)

2008-04-20 Thread Chris Zakelj
Travers Buda wrote: I can certainly see various drive makers pushing capacity irrespective of reliability. Germane to this case, some of them reduce the reserve storage for bad sectors for that extra storage. Going along with this, on a recent trip to my local computer megastore, I

Re: Really large drives (was Re: Is there a badblocks-equivalent for OpenBSD?)

2008-04-20 Thread Matthew Weigel
Chris Zakelj wrote: ... I'm wondering if thought is being given on how to make the physical size (not filesystem... I totally understand why those should be kept small) limitation of http://www.openbsd.org/faq/faq14.html#LargeDrive http://www.openbsd.org/43.html New Functionality: ... o

Re: Really large drives (was Re: Is there a badblocks-equivalent for OpenBSD?)

2008-04-20 Thread Louis V. Lambrecht
Chris Zakelj wrote: Travers Buda wrote: I can certainly see various drive makers pushing capacity irrespective of reliability. Germane to this case, some of them reduce the reserve storage for bad sectors for that extra storage. Going along with this, on a recent trip to my local

Re: Really large drives (was Re: Is there a badblocks-equivalent for OpenBSD?)

2008-04-20 Thread Chris Zakelj
Matthew Weigel wrote: Chris Zakelj wrote: ... I'm wondering if thought is being given on how to make the physical size (not filesystem... I totally understand why those should be kept small) limitation of http://www.openbsd.org/faq/faq14.html#LargeDrive http://www.openbsd.org/43.html New

Re: Really large drives (was Re: Is there a badblocks-equivalent for OpenBSD?)

2008-04-20 Thread David Gwynne
On 21/04/2008, at 4:46 AM, Matthew Weigel wrote: Chris Zakelj wrote: a non-issue on 64-bit platforms Whether a system is 64-bit or not isn't very relevant to this - that mostly establishes what the memory address space is, *not* the size of integers that can be used by the system.

Re: Is there a badblocks-equivalent for OpenBSD?

2008-04-20 Thread Siegbert Marschall
Hello, I'm curious how much more failure in the new perpendicular drives you are seeing. I can certainly see various drive makers pushing capacity irrespective of reliability. Germane to this case, some of them reduce the reserve storage for bad sectors for that extra storage. Tisk tisk.

Re: Is there a badblocks-equivalent for OpenBSD?

2008-04-20 Thread Travers Buda
* Siegbert Marschall [EMAIL PROTECTED] [2008-04-21 02:38:10]: Hello, I'm curious how much more failure in the new perpendicular drives you are seeing. I can certainly see various drive makers pushing capacity irrespective of reliability. Germane to this case, some of them reduce

Re: Really large drives (was Re: Is there a badblocks-equivalent for OpenBSD?)

2008-04-20 Thread Matthew Weigel
David Gwynne wrote: solaris suffers from this problem. you cant use big disks with 32bit solaris kernels. For UFS, at least, but doesn't ZFS on i386 (not amd64) scale? -- Matthew Weigel hacker unique idempot.ent

Re: Is there a badblocks-equivalent for OpenBSD?

2008-04-19 Thread Stuart Henderson
On 2008-04-19, ropers [EMAIL PROTECTED] wrote: Looking at the package contents ( http://www.openbsd.org/4.2_packages/i386/e2fsprogs-1.27p5.tgz-contents.html ), I've also figured out how to search for stuff like this in the future:

Re: Is there a badblocks-equivalent for OpenBSD?

2008-04-19 Thread ropers
On 19/04/2008, ropers [EMAIL PROTECTED] wrote: On 18/04/2008, Calomel [EMAIL PROTECTED] wrote: Ropers, You can find the badblocks utility prepackaged in e2fsprogs. THANK YOU! :) I had wondered why I couldn't find badblocks among OpenBSD's packages. This explains it. I will say in

Is there a badblocks-equivalent for OpenBSD?

2008-04-18 Thread ropers
Sometimes I find myself in need of a disk checking utility that can check both disks with known *and unknown* filesystems, and/or that can check even currently unpartitioned space on a disk. There exists such a program for Linux, called badblocks: http://www.linuxmanpages.com/man8/badblocks.8.php

Re: Is there a badblocks-equivalent for OpenBSD?

2008-04-18 Thread Calomel
Ropers, You can find the badblocks utility prepackaged in e2fsprogs. Hope this helps, BadBlocks Hard Drive Validation and/or Destructive Wipe http://calomel.org/badblocks_wipe.html -- Calomel @ http://calomel.org Open Source Research and Reference On Fri, Apr 18, 2008 at 08:44:27PM

Re: Is there a badblocks-equivalent for OpenBSD?

2008-04-18 Thread Jon Simola
On 4/18/08, ropers [EMAIL PROTECTED] wrote: Sometimes I find myself in need of a disk checking utility that can check both disks with known *and unknown* filesystems, and/or that can check even currently unpartitioned space on a disk. Not claiming to be an optimal solution (dd is faster),

Re: Is there a badblocks-equivalent for OpenBSD?

2008-04-18 Thread Steve Shockley
Jon Simola wrote: Not claiming to be an optimal solution (dd is faster), but does a read pass across the entire partition: $ sudo md5 /dev/rwd0c MD5 (/dev/rwd0c) = a85c2c67475f983a98007fd9a47378b7 I think part of what he wanted about badblocks is that it does a non-destructive write test as

Re: Is there a badblocks-equivalent for OpenBSD?

2008-04-18 Thread ropers
On 18/04/2008, Calomel [EMAIL PROTECTED] wrote: Ropers, You can find the badblocks utility prepackaged in e2fsprogs. THANK YOU! :) I had wondered why I couldn't find badblocks among OpenBSD's packages. This explains it. I will say in my defense ;-) that badblocks is not ext2-specific, so

Re: Is there a badblocks-equivalent for OpenBSD?

2008-04-18 Thread Travers Buda
* ropers [EMAIL PROTECTED] [2008-04-19 02:19:18]: On 18/04/2008, Calomel [EMAIL PROTECTED] wrote: Ropers, You can find the badblocks utility prepackaged in e2fsprogs. THANK YOU! :) I had wondered why I couldn't find badblocks among OpenBSD's packages. This explains it. I will say in