RAID1, Software, How to setup - Revision history

Jimbo: Reverted edits by 173.88.199.104 (talk) to last revision by 95.222.239.72

2012-08-25T21:55:11Z

Reverted edits by 173.88.199.104 (talk) to last revision by 95.222.239.72

2012-08-13T14:27:28Z

2009-07-12T13:23:30Z

Update for FreeBSD 7

2008-07-02T21:15:23Z

Reverted edits by 80.82.172.230 (Talk); changed back to last version by 134.159.99.8

2007-09-12T04:06:39Z

Creating and Initializing the Mirror

2007-05-23T14:52:16Z

2006-07-06T03:48:51Z

Reconfiguring the System

2006-04-06T18:45:41Z

RAID Subcat

2006-03-03T22:32:14Z

Reverted edit of 82.34.131.150, changed back to last version by 24.123.1.234

2006-03-03T21:01:19Z

Reconfiguring the System

← Older revision		Revision as of 21:55, 25 August 2012
Line 61:		Line 61:
	http://dannyman.toldme.com/2005/01/24/freebsd-howto-gmirror-system/ the original how-to this article was based upon.		http://dannyman.toldme.com/2005/01/24/freebsd-howto-gmirror-system/ the original how-to this article was based upon.

−	[[Category: ~~Configuring~~ FreeBSD]]	+	[[Category:FreeBSD Terminology]]
		+	[[Category:FreeBSD for Servers]]
		+	[[Category:RAID]]

@@ Line 61: / Line 61: @@
 http://dannyman.toldme.com/2005/01/24/freebsd-howto-gmirror-system/  the original how-to this article was based upon.
-[[Category:FreeBSD Terminology]]
+[[Category: Configuring FreeBSD]]
-[[Category:FreeBSD for Servers]]
-[[Category:RAID]]

@@ Line 11: / Line 11: @@
   # '''chroot /dist'''
   # '''mount_devfs devfs /dev'''
 ==Preparing to Create a Mirror==

@@ Line 26: / Line 26: @@
 Now that we've got that sorted out, you've got a decision to make - do you want your new mirror to use round-robin device balancing, or load-based?  ('''Split''' balancing is also available, but is beyond the scope of this article.  '''man gmirror''' for details.)
-Round-robin balancing simply makes each successive data access request to the next component in the mirror since the last one, whereas load-based tries to intelligently send data access requests to the least loaded component in the mirror.  I'm going to assume you want '''load''' balancing, but if you prefer '''round-robin''', simply substitute that in the label command below.
+Round-robin balancing simply makes each successive data access request to the next component in the mirror since the last one, whereas load-based tries to intelligently send data access requests to the least loaded component in the mirror.  I'm going to assume you want '''load''' balancing, but if you prefer '''round-robin''' or '''split''' read requests simply substitute that in the label command below.
   # '''gmirror label -v -b load gm0 /dev/ad0'''
   # '''mount /dev/mirror/gm0s1a /mnt'''
 And we've created and mounted our mirror filesystem, currently with a single physical drive in it - our existing system drive.
 ==Reconfiguring the System==

@@ Line 58: / Line 58: @@
 http://dannyman.toldme.com/2005/01/24/freebsd-howto-gmirror-system/  the original how-to this article was based upon.
-[[Category:Common Tasks]]
+[[Category:FreeBSD Terminology]]
 [[Category:RAID]]

@@ Line 41: / Line 41: @@
 Now we need to fix fstab to refer to the mirror, not to /dev/ad0 itself.  You can either manually edit it using [[ee]] or [[vi]] and change all references to /dev/ad0? to /dev/mirror/gm0? - ie /dev/ad0s1b becomes /dev/mirror/gm0s1b - or you can use a [[sed]] command to do it for you:
-  # '''sed "s%ad0%mirror/gm0%" /mnt/etc/fstab > /mnt/etc/fstab.new'''
+  # '''sed "s%ad0%mirror/gm0%g" /mnt/etc/fstab > /mnt/etc/fstab.new'''
   # '''mv /mnt/etc/fstab /mnt/etc/fstab.old'''
   # '''mv /mnt/etc/fstab.new /mnt/etc/fstab'''

← Older revision		Revision as of 18:45, 6 April 2006
Line 59:		Line 59:

	[[Category:Common Tasks]]		[[Category:Common Tasks]]
−	[[Category:~~FreeBSD for Servers~~]]	+	[[Category:RAID]]

← Older revision		Revision as of 22:32, 3 March 2006
Line 37:		Line 37:

	# '''echo geom_mirror_load=\"YES\" >> /mnt/boot/loader.conf'''		# '''echo geom_mirror_load=\"YES\" >> /mnt/boot/loader.conf'''
		+	# '''echo swapoff=\"YES\" >> /mnt/etc/rc.conf'''

	Now we need to fix fstab to refer to the mirror, not to /dev/ad0 itself. You can either manually edit it using [[ee]] or [[vi]] and change all references to /dev/ad0? to /dev/mirror/gm0? - ie /dev/ad0s1b becomes /dev/mirror/gm0s1b - or you can use a [[sed]] command to do it for you:		Now we need to fix fstab to refer to the mirror, not to /dev/ad0 itself. You can either manually edit it using [[ee]] or [[vi]] and change all references to /dev/ad0? to /dev/mirror/gm0? - ie /dev/ad0s1b becomes /dev/mirror/gm0s1b - or you can use a [[sed]] command to do it for you:

← Older revision		Revision as of 21:01, 3 March 2006
Line 37:		Line 37:

	# '''echo geom_mirror_load=\"YES\" >> /mnt/boot/loader.conf'''		# '''echo geom_mirror_load=\"YES\" >> /mnt/boot/loader.conf'''
−	~~# '''echo swapoff=\"YES\" >> /mnt/etc/rc.conf'''~~

	Now we need to fix fstab to refer to the mirror, not to /dev/ad0 itself. You can either manually edit it using [[ee]] or [[vi]] and change all references to /dev/ad0? to /dev/mirror/gm0? - ie /dev/ad0s1b becomes /dev/mirror/gm0s1b - or you can use a [[sed]] command to do it for you:		Now we need to fix fstab to refer to the mirror, not to /dev/ad0 itself. You can either manually edit it using [[ee]] or [[vi]] and change all references to /dev/ad0? to /dev/mirror/gm0? - ie /dev/ad0s1b becomes /dev/mirror/gm0s1b - or you can use a [[sed]] command to do it for you: