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Full Discussion: raid 5 using solaris 9 LVM
Operating Systems Solaris raid 5 using solaris 9 LVM Post 101239 by BG_JrAdmin on Monday 6th of March 2006 01:49:44 PM
Old 03-06-2006
raid 5 using solaris 9 LVM

if i want to create a raid 5 device on 3 disks I have, can I make multiple metadevices? all the example i see on the internet make use of the slice 2 placing the entire disk into the raid5 device.

what if i make 3 identical slices on each disk, and make 3 raid 5 metadevices? will that work?

Last edited by BG_JrAdmin; 03-06-2006 at 03:03 PM.. Reason: added
 

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cmdk(7D)							      Devices								  cmdk(7D)

NAME
cmdk - common disk driver SYNOPSIS
cmdk@target, lun : [ partition | slice ] DESCRIPTION
The cmdk device driver is a common interface to various disk devices. The driver supports magnetic fixed disks and magnetic removable disks. The block-files access the disk using the system's normal buffering mechanism and are read and written without regard to physical disk records. There is also a "raw" interface that provides for direct transmission between the disk and the user's read or write buffer. A sin- gle read or write call usually results in one I/O operation; raw I/O is therefore considerably more efficient when many bytes are transmit- ted. The names of the block files are found in /dev/dsk; the names of the raw files are found in /dev/rdsk. I/O requests to the magnetic disk must have an offset and transfer length that is a multiple of 512 bytes or the driver returns an EINVAL error. Slice 0 is normally used for the root file system on a disk, slice 1 as a paging area (for example, swap), and slice 2 for backing up the entire fdisk partition for Solaris software. Other slices may be used for usr file systems or system reserved area. Fdisk partition 0 is to access the entire disk and is generally used by the fdisk(1M) program. FILES
/dev/dsk/cndn[s|p]n block device (IDE) /dev/rdsk/cndn[s|p]n raw device (IDE) where: cn controller n dn lun n (0-7) sn UNIX system slice n (0-15) pn fdisk partition(0) /kernel/drv/cmdk 32-bit kernel module. /kernel/drv/amd64/cmdk 64-bit kernel module. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Architecture |x86 | +-----------------------------+-----------------------------+ SEE ALSO
fdisk(1M), mount(1M), lseek(2), read(2), write(2), readdir(3C), scsi(4), vfstab(4), attributes(5), dkio(7I) SunOS 5.10 9 Oct 2004 cmdk(7D)
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