Manpages LVREDUCESection: Maintenance Commands (8)Updated: LVM TOOLS Index Return to Main Contents NAMElvreduce - reduce the size of a logical volumeSYNOPSISlvreduce [-A|--autobackup {y|n}] [-d|--debug] [-f|--force] [-h|--help] {-l|--extents [-]LogicalExtentsNumber| -L|--size [-]LogicalVolumeSize[kKmMgGtT]} [-v|--verbose] LogicalVolumePathDESCRIPTIONlvreduce allows you to reduce the size of a logical volume. Be careful when reducing a logical volume's size, because data in the reduced part is lost!!!You should therefore ensure that the (eg) filesystem on the volume is resized running lvreduce so that the extents that are to be removed are not in use. If the filesystem is ext2 then you can use the e2fsadm(8) command to both resize the filesystem and the logical volume together. Shrinking snapshot logical volumes (see lvcreate(8) for information to create snapshots) is supported as well. OPTIONS
Example"lvreduce -l -3 /dev/vg00/lvol1" reduces the size of logical volume lvol1 in volume group vg00 by 3 logical extents.DIAGNOSTICSlvreduce returns an exit code of 0 for success and > 0 for error:1 no logical volume name on command line 2 invalid logical volume name 3 logical volume is not active 4 logical volume doesn't exist 5 error reading VGDA 6 error getting index of logical volume 7 new size of logical volume not smaller than old one 8 error setting VGDA up for reduce 9 error reducing logical volume in kernel 10 error writing VGDA to physical volume(s) 11 error getting index for read/write statistic transfer 12 error getting status of logical volume from kernel 13 error setting up copy on write exception table 95 driver/module not in kernel 96 invalid I/O protocol version 97 error locking logical volume manager 98 invalid lvmtab (run vgscan(8)) 99 invalid command line ENVIRONMENT VARIABLES
See alsolvm(8), lvcreate(8), lvextend(8), lvchange(8), e2fsadm(8)AUTHORHeinz Mauelshagen <Linux-LVM@Sistina.com>
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