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Ho-Ki Au a écrit : |
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> I was trying to put gentoo on a dell poweredge 1950 quadcore xeon machine |
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> with three disks connected to a lsi PERC 5/i raid controller. In the BIOS |
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> settings, all three disks were added to the controller for a RAID5 set up. |
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> When I boot from LiveCD (2008 version with 2.6.24-r5 kernel) with |
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> dmraid='-ay' option, it came up not recognizing the RAID set, as I only saw |
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> "control" under /dev/mapper. modprobe megaraid was okay, so was modprobe |
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> raid5. Under /dev, I only saw sda, but there was no sdb, sdc. So it looked |
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> like there was only one disk but the system did not recognize it as a raid |
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> set. Booting from LiveCD with dmraid='-ay' doscsi didn't help. I got the |
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> same result. If I did a dmraid -ay in bash, I got "No RAID disks". Could |
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> anyone point me to some instructions on how to make Gentoo recognize the |
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> PERC 5/i RAID controller? |
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> |
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> I tried both 32bit and 64bit gentoo and results were the same. |
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> |
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> lspci showed: |
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> 02:0e.0 RAID bus controller: Dell PowerEdge Expandable RAID controller 5 |
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> |
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> dmesg showed: |
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> megaraid cmm: 2.20.2.7 (Release Date: Sun Jul 16 00:01:03 EST 2006) |
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> megaraid: 2.20.5.1 (Release Date: Thu Nov 16 15:32:35 EST 2006) |
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> megasas: 00.00.03.10-rc5 Thu May 17 10:09:32 PDT 2007 |
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> megasas: 0x1028:0x0015:0x1028:0x1f03: bus 2:slot 14:func 0 |
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> ACPI: PCI Interrupt 0000:02:0e.0[A] -> GSI 78 (level, low) -> IRQ 17 |
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> megasas: FW now in Ready state |
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> scsi4 : LSI Logic SAS based MegaRAID driver |
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> scsi 4:0:0:0: Direct-Access SEAGATE ST973402SS S206 PQ: 0 ANSI: 5 |
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> scsi 4:0:1:0: Direct-Access SEAGATE ST973402SS S206 PQ: 0 ANSI: 5 |
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> scsi 4:0:2:0: Direct-Access SEAGATE ST973402SS S206 PQ: 0 ANSI: 5 |
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> QLogic Fibre Channel HBA Driver |
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> scsi 4:0:8:0: Enclosure DP BACKPLANE 1.05 PQ: 0 ANSI: 5 |
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> scsi 4:2:0:0: Direct-Access DELL PERC 5/i 1.03 PQ: 0 ANSI: 5 |
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> scsi 4:0:8:0: Attached scsi generic sg1 type 13 |
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> sd 4:2:0:0: [sda] 284164096 512-byte hardware sectors (145492 MB) |
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> sd 4:2:0:0: [sda] Write Protect is off |
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> sd 4:2:0:0: [sda] Mode Sense: 1f 00 10 08 |
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> sd 4:2:0:0: [sda] Write cache: disabled, read cache: disabled, supports DPO |
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> and FUA |
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> sd 4:2:0:0: [sda] 284164096 512-byte hardware sectors (145492 MB) |
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> sd 4:2:0:0: [sda] Write Protect is off |
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> sd 4:2:0:0: [sda] Mode Sense: 1f 00 10 08 |
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> |
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> Thanks very much for your help! |
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> |
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|
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Your RAID set is being detected by the LiveCD. It looks as though you |
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have a RAID5 set using 3x72GB drives. This would be consistent with the |
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size of /dev/sda (144GB). Because it's hardware RAID, operating systems |
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don't usually access each individual disk but rather the disk set |
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presented by the controller. |
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|
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As mentioned by Neil, dmraid is for software RAID management. If you |
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want to manage your RAID controller or disk sets from Linux, you'll have |
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to find management software capable of doing this. Try the server |
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manufacture's site or the RAID manufacture's web site to see if such |
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software exists. |
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|
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Hope that helps, |
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Carlos |
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