RE: XFS on x86_64 Linux Question

RE: XFS on x86_64 Linux Question

[Daniel Korstad]

Short answer, yep, I have done it. 

 

I don't know exactly what you are looking for, or what tools you need. 
The follow is my very recent experience. 

 

I have a FC4  x86_64 that I have been using for awhile.  I have a
raided OS (raid 1on using the two separate IDE controllers) and raided data
drives (9 in a RAID6 on SATA controllers) 

 

I had replace the original OS drives with larger ones.  I wanted to take
the new larger drives’ capacity and put that in the ext3 fs on the raid 1. 

 

Last night I did this on the system; 

mdadm --grow /dev/md0 --size=max 

 

But I had older resize2fs, it does not support ext resize on a live mount
filesystem, and since this partition was my / partition... 

 

I rebooted my system with knoppix and did; 

 

mdadm --assemble /dev/md0 /dev/hda1 /dev/hdc1 

fsck.ext /dev/md0 

resize2fs /dev/md0 

 

And reboot back to operational without any problems. 

 

My data raid6 is on a XFS.  It support live filesystem expansion
(xfs_growfs while mounted).   I have not done anything with my xfs in
knoppix but I am sure some tools are in there too. 

 

This is not a thorough test of tools on knoppix on my 64bit system but from my
experience, I can boot into it and assemble my raid within it. 

 

Dan.


 

----- Inline Message Follows ----- 

To: xfs@oss.sgi.com 

Cc: linux-raid@vger.kernel.org 

From: Justin Piszcz 

Subject: Re: XFS on x86_64 Linux Question 

 


With correct CC'd address. 
 
 
On Sat, 28 Apr 2007, Justin Piszcz wrote: 
 
> Hello-- 
> 
> Had a quick question, if I re-provision a host with an Intel Core Duo CPU  
> with x86_64 Linux; I create a software raid array and use the XFS  
> filesystem-- all in 64bit space... 
> 
> If I boot a recovery image such as Knoppix, it will not be able to work on  
> the filesystem correct?  I would need a 64bit live CD? 
> 
> Does the same apply to software raid?  Can I mount a software raid created in  
> a 64bit environment in a 32bit environment? 
> 
> Justin. 
> 
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RAID6 question

[Guy Watkins]

I read in processor.com that Adaptec has a RAID 6/60 that is patented.

Does Linux RAID6 have a conflict?

Thanks,
Guy

Adaptec also has announced a new family of Unified Serial (meaning 3Gbps
SAS/SATA) RAID controllers for PCI Express. Five models include cards with
four, eight, 12, and 16 internal ports, plus one groundbreaking SKU with
eight external ports and dual path failover. The new controllers support
RAIDs 0, 1, 5, 10, 50, 5EE, and the patented RAID 6/60, which Adaptec says
can survive two simultaneous drive failures. 
investor.adaptec.com/ReleaseDetail.cfm?ReleaseID=233555 
investor.adaptec.com/ReleaseDetail.cfm?ReleaseID=233556

http://www.processor.com/editorial/article.asp?article=articles%2Fp2912%2F02
p12%2F02p12.asp&guid=&searchtype=&WordList=&bJumpTo=True

http://tinyurl.com/2kdzcb

RE: RAID6 question

[Guy Watkins]

} -----Original Message-----
} From: linux-raid-owner@vger.kernel.org [mailto:linux-raid-
} owner@vger.kernel.org] On Behalf Of Guy Watkins
} Sent: Saturday, April 28, 2007 8:52 PM
} To: linux-raid@vger.kernel.org
} Subject: RAID6 question
} 
} I read in processor.com that Adaptec has a RAID 6/60 that is patented.
} 
} Does Linux RAID6 have a conflict?
} 
} Thanks,
} Guy
} 
} Adaptec also has announced a new family of Unified Serial (meaning 3Gbps
} SAS/SATA) RAID controllers for PCI Express. Five models include cards with
} four, eight, 12, and 16 internal ports, plus one groundbreaking SKU with
} eight external ports and dual path failover. The new controllers support
} RAIDs 0, 1, 5, 10, 50, 5EE, and the patented RAID 6/60, which Adaptec says
} can survive two simultaneous drive failures.
} investor.adaptec.com/ReleaseDetail.cfm?ReleaseID=233555
} investor.adaptec.com/ReleaseDetail.cfm?ReleaseID=233556
} 
} http://www.processor.com/editorial/article.asp?article=articles%2Fp2912%2F
} 02
} p12%2F02p12.asp&guid=&searchtype=&WordList=&bJumpTo=True
} 
} http://tinyurl.com/2kdzcb

No feedback.  Is no news good news?

RE: RAID6 question

[Neil Brown]

On Friday May 4, linux-raid@watkins-home.com wrote:
> } -----Original Message-----
> } From: linux-raid-owner@vger.kernel.org [mailto:linux-raid-
> } owner@vger.kernel.org] On Behalf Of Guy Watkins
> } Sent: Saturday, April 28, 2007 8:52 PM
> } To: linux-raid@vger.kernel.org
> } Subject: RAID6 question
> } 
> } I read in processor.com that Adaptec has a RAID 6/60 that is patented.
> } 
> } Does Linux RAID6 have a conflict?
> } 
> } Thanks,
> } Guy
> } 
> } Adaptec also has announced a new family of Unified Serial (meaning 3Gbps
> } SAS/SATA) RAID controllers for PCI Express. Five models include cards with
> } four, eight, 12, and 16 internal ports, plus one groundbreaking SKU with
> } eight external ports and dual path failover. The new controllers support
> } RAIDs 0, 1, 5, 10, 50, 5EE, and the patented RAID 6/60, which Adaptec says
> } can survive two simultaneous drive failures.
> } investor.adaptec.com/ReleaseDetail.cfm?ReleaseID=233555
> } investor.adaptec.com/ReleaseDetail.cfm?ReleaseID=233556
> } 
> } http://www.processor.com/editorial/article.asp?article=articles%2Fp2912%2F
> } 02
> } p12%2F02p12.asp&guid=&searchtype=&WordList=&bJumpTo=True
> } 
> } http://tinyurl.com/2kdzcb
> 
> No feedback.  Is no news good news?

No, no news is no news.
If someone has a patent, then that might be nice for them, but is of
little interest to me.

If anyone takes patent action against any one about any code in the
kernel (or elsewhere in widely used FLOSS code) then that is a concern
to lots of people and (providing it becomes know) I suspect that a
lot of people will take interest.

However unless and until that happens, my personal attitude to other
people's patents is that they aren't my problem.  BUGs are my problem
not patents.

NeilBrown