12-02-2008
there is a lot of stuff you will have to look at
Problems
errpt
system messages and your syslog
LVM
lspv
lsvg |lsvg -il
lsvg |lsvg -ip
disks
lspv
lspath
pcmpath query device --->pcmpath ( for mpio ) datapath (for sdd ) Look at disk storage
here are some links to try and get started
http://www.ibm.com/developerworks/wikis/display/WikiPtype/Home
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explain about logical volume and filesystem
thanks for your replay (1 Reply)
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Hello,
I have logical volume group of 50GB, in which I have 2 logical volumes, LogVol01 and LogVol02, both are of 10GB.
If I extend LogVol01 further by 10GB, then it keeps the extended copy after logical volume 2. I want to know where it keeps this information
Regards
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Hi,
I am new to unix. I am working on Red Hat Linux and side by side on AIX also. After reading the concepts of Storage, I am now really confused regarding the terminologies
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Hello everyone,
I just read that while creating a logical volume(LV) we can choose the region of the physical volume (PV) in which the LV should be created.
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When installing Linux, I choose some default setting to use all the disk space.
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Hi all,
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Hello Guys,
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LEARN ABOUT MOJAVE
vgscan
VGSCAN(8) System Manager's Manual VGSCAN(8)
NAME
vgscan - scan all disks for volume groups and rebuild caches
SYNOPSIS
vgscan [-d|--debug] [-h|-?|--help] [--ignorelockingfailure] [--mknodes] [-P|--partial] [-v|--verbose]
DESCRIPTION
vgscan scans all SCSI, (E)IDE disks, multiple devices and a bunch of other disk devices in the system looking for LVM physical volumes and
volume groups. Define a filter in lvm.conf(5) to restrict the scan to avoid a CD ROM, for example.
In LVM2, vgscans take place automatically; but you might still need to run one explicitly after changing hardware.
OPTIONS
See lvm for common options.
--mknodes
Also checks the LVM special files in /dev that are needed for active logical volumes and creates any missing ones and removes unused
ones.
SEE ALSO
lvm(8), vgcreate(8), vgchange(8)
Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) VGSCAN(8)