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Top Forums UNIX for Advanced & Expert Users Is there a tutorial on how to create RAID 1 on top of lvm? Post 302123256 by porter on Sunday 24th of June 2007 10:27:33 PM
Old 06-24-2007
That's the wrong way round to build RAID.

The idea behind RAID is that it can survive disk failure. If you have a disk failure LVM may be trashed first so it can't find the segments that make up the parts of the volume. If RAID is directly on a disk and a few tracks get trashed, RAID can still step over those and recover data either side.
 

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IIR(4)                                                     BSD Kernel Interfaces Manual                                                     IIR(4)

NAME
iir -- Intel Integrated RAID controller and ICP Vortex driver SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file: device pci device scbus device iir Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5): iir_load="YES" DESCRIPTION
The iir driver claims to interface with the Intel integrated RAID controller cards, and all versions of the ICP Vortex controllers (including FC). HARDWARE
Controllers supported by the iir driver include: o Intel RAID Controller SRCMR o Intel Server RAID Controller U3-l (SRCU31a) o Intel Server RAID Controller U3-1L (SRCU31La) o Intel Server RAID Controller U3-2 (SRCU32) o All past and future releases of Intel and ICP RAID Controllers. o Intel RAID Controller SRCU21 (discontinued) o Intel RAID Controller SRCU31 (older revision, not compatible) o Intel RAID Controller SRCU31L (older revision, not compatible) The SRCU31 and SRCU31L can be updated via a firmware update available from Intel. SEE ALSO
cam(4), pass(4), xpt(4), camcontrol(8) AUTHORS
The iir driver is supported and maintained by Achim Leubner <Achim_Leubner@adaptec.com>. This manual page was written by Tom Rhodes <trhodes@FreeBSD.org> and is based on information supplied by the driver authors and the website of Mike Smith <msmith@FreeBSD.org>. BSD August 8, 2004 BSD
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