E2FSADM(8)

NAME
e2fsadm - ext2 filesystem / LVM administration

SYNOPSIS
e2fsadm [-d|--debug] [-h|--help] {[-l|--extents] [+|-]LogicalExtentsNumber|" [-L|--size] [+|-]LogicalVolumeSize[kKmMgGtT]} [-n|--nofsck] [-v|--verbose] [--version] LogicalVolumePath

DESCRIPTION
e2fsadm allows resizing of a logical volume containing a mounted or unmounted ext2 filesystem. For unmounted filesystems it can extend the logical volume and grow the filesystem using resize2fs(8) or ext2resize(8), or shrink the filesystem and then reduce the logical volume afterwards. For mounted filesystems it can extend the logical volume and grow the filesystem using ext2online(8).

  OPTIONS

-d, --debug
    Enables additional debugging output (if compiled with DEBUG).

-h, --help
    Print a usage message on standard output and exit successfully.

-l, --extents [+|-]LogicalExtentsNumber
    Resize the filesystem/logical volume to or by the number of logical extents. If you use + or - then the number will be relative the th current size of the logical volume, otherwise the volume will be resized to LogicalExtentsNumber extents.

-L, --size [+|-]LogicalVolumeSize[kKmMgGtT]
    Resize the filesystem/logical volume to or by the given size. If you use + or - then the number will be relative the the current size of the logical volume, otherwise the volume will be resized to LogicalVolumeSize. A size suffix of K for kilobytes, M for megabytes, G for gigabytes or T for terabytes can be used.

-n, --nofsck
    Avoid the filesystem check before the resize operation. A filesystem check is mandatory before resize2fs(8), but is optional for ext2resize(8), and is not allowed for ext2online(8) because the filesystem is mounted. Useful if a check has been done before starting e2fsadm.

-t, --test
    Test run without real resizing.

-v ,  --verbose
    Gives verbose runtime information about e2fsadm's activities.

--version
    Print version number and exit successfully.

DIAGNOSTICS
e2fsadm calls e2fsck(8), lvextend(8), lvreduce(8), and resize2fs(8), ext2resize(8), or ext2online(8) internally. By default, for mounted filesystems e2fsadm will look for resize2fs first, and failing that it will look for ext2resize. For mounted filesystems it will try to run ext2online. It returns an exit code of 0 for success or > 0 for error:
1  the filesystem size is invalid
2  the logical volume name is missing
3  the logical volume name is invalid
4  the logical volume doesn't exist
5  an error occured while reading the VGDA
6  an error occured while resizing the filesystem
7  /proc/mounts is not available
8  the filesystem is mounted
9  the filesystem type is not ext2
10 the e2fsck(8) command is missing or was not found
11 resize2fs(8) is missing or was not found
12 unable to run e2fsck(8)
13 unable to run resize2fs(8)
14 an error occured while reading the logical volume
15 logical volume size error
16 lvextend(8) is missing or was not found
17 unable to run lvextend(8)
18 lvreduce(8) is missing or was not found
19 unable to run lvreduce(8)
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

E2FSADM_RESIZE_CMD
    Command to call instead of resize2fs(8).

E2FSADM_RESIZE_OPTS
    Options for the EXT2_RESIZE_CMD.

E2FSADM_ONLINE_CMD
    Command to call instead of ext2online(8).

E2FSADM_ONLINE_OPTS
    Options for the EXT2_ONLINE_CMD.

SEE ALSO
lvm(8), lvcreate(8), lvextend(8), lvreduce(8), resize2fs(8), ext2resize(8), ext2online(8)

AUTHOR
Heinz Mauelshagen <Linux-LVM@Sistina.com>