Re: addendum: was Re: recovering data on a failed raid-0 installation

2006-04-01 Thread Mark Hahn
> well? are you guys tapped out on this or should I be looking elsewhere? > The *was* the recommended place to seek out help. > still waiting netiquette hint: if you don't get a reply, you need to first verify that you provided all possible diagnostic info in a clear, succinct message, and

Re: addendum: was Re: recovering data on a failed raid-0 installation

2006-04-01 Thread Technomage
On Friday 31 March 2006 22:27, Mike Hardy wrote: > Well, honestly I'm not really sure. I've never done this as I only use > the redundant raid levels, and when they're gone, things are a complete > hash and there's no hope. In fact, with raid-0 (striping, right? not > linear/append?) I believe you

Re: addendum: was Re: recovering data on a failed raid-0 installation

2006-03-31 Thread Mike Hardy
Well, honestly I'm not really sure. I've never done this as I only use the redundant raid levels, and when they're gone, things are a complete hash and there's no hope. In fact, with raid-0 (striping, right? not linear/append?) I believe you are in the same boat. Each large file will have half its

Re: addendum: was Re: recovering data on a failed raid-0 installation

2006-03-31 Thread Technomage
mike. given the problem, I have a request. On Friday 31 March 2006 15:55, Mike Hardy wrote: > > I can't imagine how to coax a filesystem to work when it's missing half > it's contents, but maybe a combination of forcing a start on the raid > and read-only FS mounts could make it hobble along. w

Re: addendum: was Re: recovering data on a failed raid-0 installation

2006-03-31 Thread Technomage
ok, seems I made a mistake in how this silly mail client is configured. so, in that, I do apologize for having this show up on the list (doh!) this was meant to be private and should have remained that way. On Friday 31 March 2006 19:01, Technomage wrote: > Jeff, > I would if I could. but I liv

Re: addendum: was Re: recovering data on a failed raid-0 installation

2006-03-31 Thread Technomage
mike, yeah coaxing the FS into trying to recover seems to be the sticky bit. :( I have tried all that I know, which is not much considering that this is not my specialty (I am a unix security admin ). we still have the original drives and we have a drive imaging device arriving (should have

Re: addendum: was Re: recovering data on a failed raid-0 installation

2006-03-31 Thread Technomage
Jeff, I would if I could. but I live on a rather limited income here . :( also, my chances for employment (other than self-contracted services) in phoenix are slim and none (being disabled in a market with a very soft tech sector can lead to that). now, I don't mean to be abrasive, but, so far,

RE: addendum: was Re: recovering data on a failed raid-0 installation

2006-03-29 Thread Guy
PM } To: Guy } Cc: linux-raid@vger.kernel.org } Subject: addendum: was Re: recovering data on a failed raid-0 installation } } ok, guy and others. } } this is a followup to the case I am currently trying (still) to solve. } } synopsis: } the general consensus is that raid0 writes in a striping f

addendum: was Re: recovering data on a failed raid-0 installation

2006-03-29 Thread Technomage
ok, guy and others. this is a followup to the case I am currently trying (still) to solve. synopsis: the general consensus is that raid0 writes in a striping fashion. However, the test case I have here doesn't appear to operate in the above described manner. what was observed was this: on /dev/

Re: recovering data on a failed raid-0 installation

2006-03-28 Thread Neil Brown
On Tuesday March 28, [EMAIL PROTECTED] wrote: > ok, > here's the situation in a nutshell. > > one of the 2 HD's in a linux raid-0 installation has failed. > > Fortunately, or otherwise, it was NOT the primary HD. What do you mean by "primary HD". All drives in a raid-0 are equal. > > problem

RE: recovering data on a failed raid-0 installation

2006-03-28 Thread Guy
RAID0 uses all disks evenly (all 2 in your case). I don’t see how you can recover from a drive failure with a RAID0. Never use RAID0 unless you are willing to lose all the data! Are you sure the second disk is dead? Have you done a read test on the disk? dd works well for read testing. Try th