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It took Carlos' reply for me to reread & make sense of the original |
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post. |
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|
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On 27 Jul 2009, at 11:46, Carlos wrote: |
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> Ho-Ki Au a écrit : |
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>> |
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>> ... In the BIOS settings, all three disks were added to the |
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>> controller for a RAID5 set up. ... Under /dev, I only saw sda, but |
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>> there was no sdb, sdc. So it looked like there was only one disk |
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>> but the system did not recognize it as a raid set. |
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|
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It looks like *not only* did you add them to the controller, but you |
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configured them as a single drive. Therefore this looks correct. |
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|
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The whole point of RAID is that multiple disks should appear to the |
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host o/s as a single drive. |
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|
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> As mentioned by Neil, dmraid is for software RAID management. If |
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> you want to manage your RAID controller or disk sets from Linux, |
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> you'll have to find management software capable of doing this. Try |
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> the server manufacture's site or the RAID manufacture's web site to |
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> see if such software exists. |
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|
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|
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A Google for "PERC5 Linux" reveals: |
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http://blog.gtuhl.com/2009/03/11/monitoring-dell-perc5-and-perc6-disks-in-arch-linux/ |
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|
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Then searching Portage: |
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|
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$ eix sys-block/mega |
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* sys-block/megacli |
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Available versions: ~1.01.40!m!s!t ~2.00.15!m!s!t ~4.00.11!m!s!t |
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Homepage: http://www.lsi.com/ |
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Description: LSI Logic MegaRAID Command Line Interface |
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management tool |
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|
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* sys-block/megactl |
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Available versions: ~0.4.1 |
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Homepage: http://sourceforge.net/projects/megactl/ |
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Description: LSI MegaRAID control utility |
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|
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* sys-block/megamgr |
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Available versions: ~5.20!m!s!t ~5.20-r1!m!s!t |
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Homepage: http://www.lsi.com |
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Description: LSI Logic MegaRAID Text User Interface |
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management tool |
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|
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* sys-block/megarc |
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Available versions: ~1.11!m!s!t {doc} |
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Homepage: http://www.lsi.com |
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Description: LSI Logic MegaRAID Text User Interface |
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management tool |
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|
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Found 4 matches. |
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$ |
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|
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Viewing the RAID using the correct LSI utility should show the |
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individual drives. |
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|
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I use the tw_cli for my 3ware controller. This is how it it appears on |
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my system (the LSI utility will have a different name & syntax): |
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|
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$ sudo tw_cli /c0/u1 show |
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Unit UnitType Status %RCmpl %V/I/M Port Stripe Size(GB) |
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------------------------------------------------------------------------ |
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u1 RAID-5 OK - - - 64K 931.303 |
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u1-0 DISK OK - - p4 - 465.651 |
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u1-1 DISK OK - - p5 - 465.651 |
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u1-2 DISK OK - - p6 - 465.651 |
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$ |
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|
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Stroller. |
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