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Top Forums UNIX for Advanced & Expert Users How to test RAID10 array performance [Debian Wheezy]? Post 302918616 by gacanepa on Wednesday 24th of September 2014 12:32:38 PM
Old 09-24-2014
Quote:
Originally Posted by gull04
Hi,

I don't think that this is really a suitable way to evaluate the performance of any RAID as it's all on one physical disk.

Regards

Dave
I agree with you. I actually gave it a try because I didn't have any other setup available to test. But in theory (leaving VirtualBox aside, and if I had the actual physical drives available), reads should be ~twice as fast, and writes about as fast as RAID1, am I correct?
 

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PVCHANGE(8)						      System Manager's Manual						       PVCHANGE(8)

NAME
pvchange - change attributes of a physical volume SYNOPSIS
pvchange [--addtag Tag] [-A|--autobackup y|n] [-d|--debug] [-f|--force] [--deltag Tag] [--metadataignore y|n] [-h|-?|--help] [-t|--test] [-v|--verbose] [-a|--all] [-x|--allocatable y|n] [-u|--uuid] [PhysicalVolumePath...] DESCRIPTION
pvchange allows you to change the allocation permissions of one or more physical volumes. OPTIONS
See lvm for common options. -a, --all If PhysicalVolumePath is not specified on the command line all physical volumes are searched for and used. --metadataignore y|n Ignore or un-ignore metadata areas on this physical volume. If metadata areas on a physical volume are ignored, LVM will not not store metadata in the metadata areas present on this Physical Volume. -u, --uuid Generate new random UUID for specified physical volumes. -x, --allocatable y|n Enable or disable allocation of physical extents on this physical volume. Example "pvchange -x n /dev/sdk1" disallows the allocation of physical extents on this physical volume (possibly because of disk errors, or because it will be removed after freeing it. SEE ALSO
lvm(8), pvcreate(8) Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) PVCHANGE(8)
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