Software RAID Post: 302378326

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Special Forums Hardware Filesystems, Disks and Memory Software RAID Post 302378326 by mojoman on Monday 7th of December 2009 02:48:22 PM

12-07-2009

Registered User

How do I know path to actual raid?

How do I find out the path to the actual raid?

Al I see is this:

Code:

[root@drill proc]# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
                      16790968   2805884  13118372  18% /
/dev/hda1               101086     17720     78147  19% /boot
tmpfs                   777728         0    777728   0% /dev/shm
/dev/md0             475751440 389860552  61724084  87% /ha0

When I execute your command I get:

Code:

[root@drill proc]# mdadm --detail /dev/ha0
mdadm: cannot open /dev/ha0: No such file or directory
[root@drill proc]# mdadm --detail /dev/md0
/dev/md0:
        Version : 00.90.03
  Creation Time : Thu Mar 26 19:20:00 2009
     Raid Level : raid1
     Array Size : 483336128 (460.95 GiB 494.94 GB)
  Used Dev Size : 483336128 (460.95 GiB 494.94 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 0
    Persistence : Superblock is persistent

    Update Time : Sun Dec  6 04:07:03 2009
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

           UUID : 4a9f08c9:339514a7:b9ef28ff:12bbcfdb
         Events : 0.6

    Number   Major   Minor   RaidDevice State
       0     253        2        0      active sync   /dev/VolGroup_a/Logical_a
       1     253        3        1      active sync   /dev/VolGroup_b/Logical_b

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LEARN ABOUT NETBSD

ataraid

ATARAID(4)						   BSD Kernel Interfaces Manual 						ATARAID(4)

NAME

     ataraid -- software BIOS RAID

SYNOPSIS

     pseudo-device ataraid
     ld* at ataraid? vendtype ? unit ?

DESCRIPTION

     The ataraid driver provides support for BIOS-based software RAID controllers.  These are devices which have some simple support for several
     basic RAID levels (often RAID 0 and RAID 1), but which require software support to actually perform the RAID function.  The BIOS support is
     largely just to create and recognize the array so that it may be a boot device.

     The driver currently supports RAID formats from:
	   o   Adaptec HostRAID (found in Intel 6300ESB)
	   o   Intel MatrixRAID
	   o   JMicron RAID
	   o   nVidia MediaShield
	   o   Promise FastTrak
	   o   Via V-RAID (found in many VIA-based motherboards)

     Status of the logical disk as well as the disks associated with it, can be viewed through the bioctl(8) utility.

SEE ALSO

     ld(4), bioctl(8)

HISTORY

     The ataraid driver first appeared in NetBSD 2.0.

AUTHORS

     The ataraid driver was originally adapted from FreeBSD by Jason Thorpe <thorpej@NetBSD.org>.

BUGS

     Not all features of the software RAID are currently recognized or supported.  For example, the Adaptec support doesn't recognize when a RAID
     1 should be in a ``building'' state, and it does not do the right thing.

     At least part of the reason for this is that the publically-available information on these formats is quite limited.

BSD
								September 16, 2008							       BSD