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Full Discussion: Linux on SAN
Operating Systems Linux Linux on SAN Post 302199187 by d_ark on Monday 26th of May 2008 04:28:54 AM
Old 05-26-2008
Linux on SAN

Hello everyone.

I was wondering if there is a way to increase the size on the LUN on a SAN and make the Linux kernel understand the changes without restarting?

In the past it has always been rebooted to see the new values but im sure that there is a way now for the lvm to see the Free PE in pvdisplay, but i have not yet to find this.

Ill be grateful if someone here has the answer.

Thanks alot in advanced.
Cheers.
 

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

NAME
pvdisplay - display attributes of a physical volume SYNOPSIS
pvdisplay [-c|--colon] [-d|--debug] [-h|-?|--help] [--ignorelockingfailure] [--maps] [--nosuffix] [-s|--short] [--units hsbkmgtHKMGT] [-v[v]|--verbose [--verbose]] [--version] [PhysicalVolumePath [PhysicalVolumePath...]] pvdisplay --columns | -C [--aligned] [-a|--all] [-d|--debug] [-h|-?|--help] [--ignorelockingfailure] [--noheadings] [--nosuffix] [-o|--options [+]Field[,Field]] [-O|--sort [+|-]Key1[,[+|-]Key2[,...]]] [--separator Separator] [--unbuffered] [--units hHbBsSkKmMg- GtTpPeE] [-v[v]|--verbose [--verbose]] [--version] [PhysicalVolumePath [PhysicalVolumePath...]] DESCRIPTION
pvdisplay allows you to see the attributes of one or more physical volumes like size, physical extent size, space used for the volume group descriptor area and so on. pvs (8) is an alternative that provides the same information in the style of ps (1). OPTIONS
See lvm for common options and pvs for options given with --columns. -c, --colon Generate colon separated output for easier parsing in scripts or programs. N.B. pvs (8) provides considerably more control over the output. The values are: * physical volume device name * volume group name * physical volume size in kilobytes * internal physical volume number (obsolete) * physical volume status * physical volume (not) allocatable * current number of logical volumes on this physical volume * physical extent size in kilobytes * total number of physical extents * free number of physical extents * allocated number of physical extents -s, --short Only display the size of the given physical volumes. -m, --maps Display the mapping of physical extents to logical volumes and logical extents. --columns | -C Display output in columns, the equivalent of pvs (8). See pvs (8) for a description of other options with this form of pvdisplay. SEE ALSO
lvm(8), pvcreate(8), lvcreate(8), vgcreate(8) Sistina Software UK LVM TOOLS 2.02.95(2) (2012-03-06) PVDISPLAY(8)
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