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Full Discussion: LVM resize
Operating Systems Linux Red Hat LVM resize Post 302954359 by rbatte1 on Monday 7th of September 2015 08:19:08 AM
Old 09-07-2015
I would always use the -r flag on lvreduce and get the filesystem reduction AND logical volume reduction done in one step. I'm not familiar with vfat, so it might not apply. You would at least need to specify the type though as RudiC says.

Using the -r flag does the whole process, i.e. unmounts, reduces FS & LV and re-mounts, so:-
Code:
# umout /lvm (mount point)
# e2fsck -f /dev/vgname/lvname
# resize2fs /dev/vgname/lvname 100M (Say from 200M)
# lvreduce -L 100M /dev/vgname/lvname

becomes just:-
Code:
# lvreduce -t vfat -L 100M -r /dev/vgname/lvname


I hope that this helps,
Robin
This User Gave Thanks to rbatte1 For This Post:
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LEARN ABOUT OPENSOLARIS

pvck

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

NAME

       pvck - check physical volume metadata

SYNOPSIS

       pvck [-d|--debug] [-h|--help] [-v|--verbose] [--labelsector] PhysicalVolume [PhysicalVolume...]

DESCRIPTION

       pvck checks physical volume LVM metadata for consistency.

OPTIONS

       See lvm for common options.

       --labelsector sector
              By  default, 4 sectors of PhysicalVolume are scanned for an LVM label, starting at sector 0.  This parameter allows you to specify a
              different starting sector for the scan and is useful for recovery situations.  For example, suppose the partition table is corrupted
              or  lost  on  /dev/sda, but you suspect there was an LVM partition at approximately 100 MB.  This area of the disk may be scanned by
              using the --labelsector parameter with a value of 204800 (100 * 1024 * 1024 / 512 = 204800):

              pvck --labelsector 204800 /dev/sda

              Note that a script can be used with --labelsector to automate the process of finding LVM labels.

SEE ALSO

       lvm(8), pvcreate(8), pvscan(8) vgck(8)

Sistina Software UK                                      LVM TOOLS 2.02.95(2) (2012-03-06)                                                 PVCK(8)
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