[ILUG] Linux RAID introduction

[Gary Mc Closkey]

AFAIR, there's a raid configuration screen, where you can 'enable' the new disks, and specify how they are to play with the existing ones. You enter the configuration screen on reboot.



---
Gary Mc Closkey
Digital Terrestrial Television Network
Radio Telefis Eireann (RTE), Ireland
Tel: +353-1-208-2992 fax: +353-1-208-3090	


+-----Original Message-----
+From: ilug-admin at linux.ie [mailto:ilug-admin at linux.ie]On Behalf Of John
+P. Looney
+Sent: 11 April 2000 10:37
+To: ilug at linux.ie
+Subject: Re: [ILUG] Linux RAID introduction
+
+
+On Tue, Apr 11, 2000 at 09:55:12AM +0100, Gary Mc Closkey mentioned:
+> He's talking about software RAID there, not hardware btw.  Some claim
+> that in certain circumstances that software RAID is better than
+> hardware, though YMMV.
+
+ Speaking of, anyone added disks to a Dell box, that has a 
+hardware raid
+card ? One of our servers here had a pair of 9GB disks, 
+working away Raid
+1+0'd. 
+
+ Then I added two more, initialised them in the BIOS (took 
+poxy ages), and
+then when I booted the machine up, it didn't see a "/dev/sdb" like I'd
+expected. Any ideas what else I've to do ? The relevant dmesg 
+output is:
+
+scsi2 : Found a MegaRAID controller at 0xe490, IRQ: 18
+megaraid: [Uc77:1.47] detected 2 logical drives
+scsi2 : AMI MegaRAID Uc77 254 commands 16 targs 2 chans 8 luns
+scsi : 3 hosts.
+scsi2: scanning channel 1 for devices.
+scsi2: scanning channel 2 for devices.
+scsi2: scanning virtual channel for logical drives.
+  Vendor: MegaRAID  Model: LD0 RAID1  8568R  Rev: Uc77
+  Type:   Direct-Access                      ANSI SCSI revision: 02
+Detected scsi disk sda at scsi2, channel 2, id 0, lun 0
+
+ So, it sees 2 logical drives, but only detects one ?
+
+Kate
+
+-- 
+"The fool must be beaten with a stick, for an intelligent person 
+the merest hint is sufficient"                -- Zen Master Greg
+
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