Subject: kern/30674: RAIDframe should be able to create volumes without parity rewrite
To: None <kern-bug-people@netbsd.org, gnats-admin@netbsd.org,>
From: Matthias Scheler <tron@colwyn.zhadum.de>
List: netbsd-bugs
Date: 07/06/2005 09:52:00
>Number: 30674
>Category: kern
>Synopsis: RAIDframe should be able to create volumes without parity rewrite
>Confidential: no
>Severity: non-critical
>Priority: medium
>Responsible: kern-bug-people
>State: open
>Class: change-request
>Submitter-Id: net
>Arrival-Date: Wed Jul 06 09:52:00 +0000 2005
>Originator: Matthias Scheler
>Release: NetBSD 3.99.7
>Organization:
Matthias Scheler http://scheler.de/~matthias/
>Environment:
System: NetBSD lyssa.zhadum.de 3.99.7 NetBSD 3.99.7 (LYSSA) #0: Mon Jul 4 10:16:28 BST 2005 tron@lyssa.zhadum.de:/src/sys/compile/LYSSA i386
Architecture: i386
Machine: i386
>Description:
Setting up a RAIDframe volume requires an initial parity rewrite which
can take a long time. This is completely pointless because the volume
doesn't contain any data yet. The Solaris Volume Manager e.g. allows
you to create a mirror with all disks attached without a resync which
is perfectly fine if the next thing you do is using "newfs" on it.
Solaris Volume Manager
>How-To-Repeat:
Create a RAID 1 volume with RAIDframe which requires using
"raidctl -i raidXZY" to rewrite parity.
>Fix:
None provided.