Re: Resilient RAID

2010-05-22 Thread Jussi Peltola
On Fri, May 21, 2010 at 10:45:01PM -0500, Marco Peereboom wrote: I've lost 3 due to washing... I've revived many with a toothbrush and alcohol. It's not the water, but all of the stuff that deposits on the thing. Still, just take the backups...

Re: Resilient RAID

2010-05-22 Thread Olivier Cherrier
On Fri, May 21, 2010 at 10:45:01PM -0500, sl...@peereboom.us wrote: I've lost 3 due to washing... So, stop washing your clothes ;-) On Fri, May 21, 2010 at 05:28:06PM -0700, Greg Thomas wrote: On Fri, May 21, 2010 at 7:11 AM, Marco Peereboom sl...@peereboom.us wrote:

Re: Resilient RAID

2010-05-21 Thread Kevin Chadwick
On Thu, 20 May 2010 18:53:38 +0200 Henning Brauer lists-open...@bsws.de wrote: * Xavier Beaudouin k...@oav.net [2010-05-20 17:34]: And if you don't want to suffer because of a harddisk failure you can also use flashrd to make the openbsd stuff on a DOM, a Compact Flash or even an USB

Re: Resilient RAID

2010-05-21 Thread Henning Brauer
* Kevin Chadwick ma1l1i...@yahoo.co.uk [2010-05-21 11:28]: On Thu, 20 May 2010 18:53:38 +0200 Henning Brauer lists-open...@bsws.de wrote: * Xavier Beaudouin k...@oav.net [2010-05-20 17:34]: And if you don't want to suffer because of a harddisk failure you can also use flashrd to

Re: Resilient RAID

2010-05-21 Thread Bryan
On Fri, May 21, 2010 at 09:01, Henning Brauer lists-open...@bsws.de wrote: If you check usb flash stick packaging, it may say guaranteed for a 1000 writes which is marketing crypto speech for, sectors may fail after 1000 writes. cut the crap. take a random usb stick and don't mail misc until

Re: Resilient RAID

2010-05-21 Thread Marco Peereboom
On Fri, May 21, 2010 at 11:25:00AM +0100, Kevin Chadwick wrote: On Thu, 20 May 2010 18:53:38 +0200 Henning Brauer lists-open...@bsws.de wrote: * Xavier Beaudouin k...@oav.net [2010-05-20 17:34]: And if you don't want to suffer because of a harddisk failure you can also use flashrd

Re: Resilient RAID

2010-05-21 Thread John Rowe
On Fri, 2010-05-21 at 11:25 +0100, Kevin Chadwick wrote: If you check usb flash stick packaging, it may say guaranteed for a 1000 writes which is marketing crypto speech for, sectors may fail after 1000 writes. However, the root partion is not often written to so presumably I could have / on

Re: Resilient RAID

2010-05-21 Thread Marco Peereboom
On Fri, May 21, 2010 at 04:28:32PM +0100, John Rowe wrote: On Fri, 2010-05-21 at 11:25 +0100, Kevin Chadwick wrote: If you check usb flash stick packaging, it may say guaranteed for a 1000 writes which is marketing crypto speech for, sectors may fail after 1000 writes. However, the

Re: Resilient RAID

2010-05-21 Thread Siju George
On Thu, May 20, 2010 at 9:53 AM, Henning Brauer lists-open...@bsws.de wrote: 2) flash never fails, right. fuck redundancy, I have flash! when you say flash are you talking about http://www.transcendusa.com/products/ModDetail.asp?ModNo=177 or http://en.wikipedia.org/wiki/USB_flash_drive the

Re: Resilient RAID

2010-05-21 Thread Siju George
On Fri, May 21, 2010 at 7:11 AM, Marco Peereboom sl...@peereboom.us wrote USB sticks primary cause of death is the washing machine and/or dryer. Second one probably is sitting out in the sun. I have yet to see the USB stick that dies because it was written to. A bit confusing :-(

Re: Resilient RAID

2010-05-21 Thread Kevin Chadwick
If you check usb flash stick packaging, it may say guaranteed for a 1000 writes which is marketing crypto speech for, sectors may fail after 1000 writes. cut the crap. take a random usb stick and don't mail misc until it fails due to exceeded write cycles. we'll never again hear form you

Re: Resilient RAID

2010-05-21 Thread Kevin Chadwick
On Fri, 21 May 2010 16:28:32 +0100 John Rowe r...@excc.ex.ac.uk wrote: On Fri, 2010-05-21 at 11:25 +0100, Kevin Chadwick wrote: If you check usb flash stick packaging, it may say guaranteed for a 1000 writes which is marketing crypto speech for, sectors may fail after 1000 writes.

Re: Resilient RAID

2010-05-21 Thread Kevin Chadwick
However, the root partion is not often written to so presumably I could have / on the USB stick and swap, /var, /usr, /tmp et al. on a mirrored pair? You probably already have, but it's often a good idea to have a separate /var/log partition to allow more control over running out of

Re: Resilient RAID

2010-05-21 Thread Marco Peereboom
On Fri, May 21, 2010 at 05:05:19PM +0100, Kevin Chadwick wrote: If you check usb flash stick packaging, it may say guaranteed for a 1000 writes which is marketing crypto speech for, sectors may fail after 1000 writes. cut the crap. take a random usb stick and don't mail misc until it

Re: Resilient RAID

2010-05-21 Thread Jan Stary
On May 21 16:28:32, John Rowe wrote: On Fri, 2010-05-21 at 11:25 +0100, Kevin Chadwick wrote: If you check usb flash stick packaging, it may say guaranteed for a 1000 writes which is marketing crypto speech for, sectors may fail after 1000 writes. However, the root partion is not often

Re: Resilient RAID

2010-05-21 Thread Jacob Yocom-Piatt
Jan Stary wrote: On May 21 16:28:32, John Rowe wrote: On Fri, 2010-05-21 at 11:25 +0100, Kevin Chadwick wrote: If you check usb flash stick packaging, it may say guaranteed for a 1000 writes which is marketing crypto speech for, sectors may fail after 1000 writes. However, the

Re: Resilient RAID

2010-05-21 Thread Henning Brauer
* Siju George sgeorge...@gmail.com [2010-05-21 19:13]: On Thu, May 20, 2010 at 9:53 AM, Henning Brauer lists-open...@bsws.de wrote: 2) flash never fails, right. fuck redundancy, I have flash! when you say flash are you talking about

Re: Resilient RAID

2010-05-21 Thread J.C. Roberts
On Fri, 21 May 2010 10:13:33 -0700 Siju George sgeorge...@gmail.com wrote: On Fri, May 21, 2010 at 7:11 AM, Marco Peereboom sl...@peereboom.us wrote USB sticks primary cause of death is the washing machine and/or dryer. Second one probably is sitting out in the sun. I have yet to see the

Re: Resilient RAID

2010-05-21 Thread Greg Thomas
On Fri, May 21, 2010 at 7:11 AM, Marco Peereboom sl...@peereboom.us wrote: USB sticks primary cause of death is the washing machine and/or dryer. Second one probably is sitting out in the sun. I have yet to see the USB stick that dies because it was written to. Funny thing is I still

Re: OT - Resilient RAID

2010-05-21 Thread Paul M
Water by itself is pretty harmless to most electronic components - as long as there is no power present. If it is thoroughly and completely dried before power is applied, there's unlikely to be any issues. Even the heat of the drier is unlikely to be a problem. Consumer electronic components

Re: Resilient RAID

2010-05-21 Thread Marco Peereboom
I've lost 3 due to washing... On Fri, May 21, 2010 at 05:28:06PM -0700, Greg Thomas wrote: On Fri, May 21, 2010 at 7:11 AM, Marco Peereboom sl...@peereboom.us wrote: USB sticks primary cause of death is the washing machine and/or dryer. Second one probably is sitting out in

Re: Resilient RAID

2010-05-21 Thread Siju George
On Fri, May 21, 2010 at 2:04 PM, Henning Brauer lists-open...@bsws.de wrote: I'm talking about common flash types. no specific products. Sorry to confuse you :-( I was also not talking about products but the two differrent category of stuff both commonly called here as flash Thanks

Re: Resilient RAID

2010-05-21 Thread gwes
I ran a firewall/server for a year on a flash stick with full logging. No problems. As an ex-chip-verification-engineer, the BIG caveat is temperature. Failures will at least double for every 10C above 20C or so. Heat is electronics most vicious enemy. geoff steckel curmudgeon for hire, rent, or

Resilient RAID

2010-05-20 Thread John Rowe
I need an inexpensive OpenBSD system that will survive a disk failure, to act as a firewall. My understanding from the on-line documentation and the list archives is that the new RAID system, softraid, does not support having the root partition on RAID meaning that if the system disk fails the

Re: Resilient RAID

2010-05-20 Thread Henning Brauer
* John Rowe r...@excc.ex.ac.uk [2010-05-20 16:02]: I need an inexpensive OpenBSD system that will survive a disk failure, to act as a firewall. wrong approach, see below My understanding from the on-line documentation and the list archives is that the new RAID system, softraid, does not

Re: Resilient RAID

2010-05-20 Thread Xavier Beaudouin
What is the most recent OpenBSD release that does support and document installing on to RAID? none. it's pointless anyway. use two machines and carp, et voila, resilent against a lot more things than just disk failures. And if you don't want to suffer because of a harddisk failure you can

Re: Resilient RAID

2010-05-20 Thread Martin Pelikán
If your firewall has to run in not so hostile conditions like sub-zero temperatures or large temp differences over short time (typically right under the roof), consider using flash memory (CF-ATA converters being available around 20 USD) instead of hard disk + eventually mfs for some logging or

Re: Resilient RAID

2010-05-20 Thread Henning Brauer
* Xavier Beaudouin k...@oav.net [2010-05-20 17:34]: And if you don't want to suffer because of a harddisk failure you can also use flashrd to make the openbsd stuff on a DOM, a Compact Flash or even an USB key. 1) flashrd and friends are bullshit, just use your CF/DOM/Whatever like a