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Full Discussion: stop raid mean what
Operating Systems Linux stop raid mean what Post 302451716 by ZR_Lang on Tuesday 7th of September 2010 11:09:18 PM
Old 09-08-2010
Question stop raid mean what
Hello, recently I worked about RAID (soft Raid), I use mdadm command. There are some questions, for example:
1, I make a RAID named /dev/md0.
Code:
mdadm -C -v /dev/md0 -l1 -n2 -x1 /dev/hda1 /dev/hdb1 /dev/hdc1

2, Then I stop it.
Code:
mdadm -S /dev/md0

3, Then I make another RAID also named /dev/md0, and I can do it.
Code:
mdadm -C -v /dev/md0 -l0 -n2 /dev/hda2 /dev/hdb2

4, Then I use "/dev/hda1 /dev/hdb1 /dev/hdc1" which belong the old md0 be stopped to make a new RAID named /dev/md1. I can do it, but just I need say "yes".
Code:
localhost:~/mkraid # mdadm -C -v /dev/md1 -l1 -n2 -x1 /dev/hda1 /dev/hdb1 /dev/hdc1
mdadm: layout defaults to left-symmetric
mdadm: chunk size defaults to 64K
mdadm: /dev/hda1 appears to be part of a raid array:
    level=raid1 devices=2 ctime=Wed Sep  8 09:08:47 2010
mdadm: /dev/hdb1 appears to be part of a raid array:
    level=raid5 devices=2 ctime=Wed Sep  8 09:08:47 2010
mdadm: /dev/hdc1 appears to be part of a raid array:
    level=raid5 devices=2 ctime=Wed Sep  8 09:08:47 2010
mdadm: size set to 97216K
Continue creating array? yes
mdadm: array /dev/md1 started.

One:
I hope to know, I made new RAID named same as an old RAID be stopped, and used devices belong to the old RAID be stopped like what I said above. Is it allright? There are any affect? How could I deal with the old RAID be stopped except active it?

Two:
I am writing a program and I need to get the message of old partition has exist. I don't know how to deal with the message of old be stopped RAID. Don't touch it just show it has been stopped wait for deal later or don't care about it just deal it as the devices which can be used as usual?

Thank you very much for your help.
Last edited by pludi; 09-08-2010 at 02:21 AM..
 

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LEARN ABOUT NETBSD

mfi

MFI(4)							   BSD Kernel Interfaces Manual 						    MFI(4)

NAME

     mfi -- LSI Logic & Dell MegaRAID SAS RAID controller

SYNOPSIS

     mfi* at pci? dev ? function ?

DESCRIPTION

     The mfi driver provides support for the MegaRAID SAS family of RAID controllers, including:

	   -   Dell PERC 5/e, PERC 5/i, PERC 6/e, PERC 6/i
	   -   Intel RAID Controller SRCSAS18E, SRCSAS144E
	   -   LSI Logic MegaRAID SAS 8208ELP, MegaRAID SAS 8208XLP, MegaRAID SAS 8300XLP, MegaRAID SAS 8308ELP, MegaRAID SAS 8344ELP, MegaRAID
	       SAS 8408E, MegaRAID SAS 8480E, MegaRAID SAS 8708ELP, MegaRAID SAS 8888ELP, MegaRAID SAS 8880EM2, MegaRAID SAS 9260-8i
	   -   IBM ServeRAID M1015, ServeRAID M5014

     These controllers support RAID 0, RAID 1, RAID 5, RAID 6, RAID 10, RAID 50 and RAID 60 using either SAS or SATA II drives.

     Although the controllers are actual RAID controllers, the driver makes them look just like SCSI controllers.  All RAID configuration is done
     through the controllers' BIOSes.

     mfi supports monitoring of the logical disks in the controller through the bioctl(8) and envstat(8) commands.

EVENTS

     The mfi driver is able to send events to powerd(8) if a logical drive in the controller is not online.  The state-changed event will be sent
     to the /etc/powerd/scripts/sensor_drive script when such condition happens.

SEE ALSO

     intro(4), pci(4), scsi(4), sd(4), bioctl(8), envstat(8), powerd(8)

HISTORY

     The mfi driver first appeared in NetBSD 4.0.

BSD
								  March 22, 2012							       BSD
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