Releasing a certain logical disk is easy: just swapoff it (that can take some time if swap is in use - the swapped blocks need to be shuffled into RAM).
Then you can lvresize it.
Then swapon -v it - it will see the new size.
To grow (and shrink) a filesystem, lvresize --resizefs --size ... seems to be most easy (but I have never used it).
and the --resizefs option points to
Had a issue recently where DB admins did:
mv listener.log listener.log.old
gzip listener.log.old
Where file listener.log is continually being written to by an oracle process.
Anyway, according to the DB admins they successfully created the
listener.log.old.gz
file (i.e. all went okay).... (4 Replies)
Hi,
I have red hat enterprise 4. I would like to add more space on my lvm from the first partition that is not lvm type.
Here's the config
# fdisk -l
Disk /dev/sda: 73.4 GB, 73406611456 bytes
255 heads, 63 sectors/track, 8924 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes... (6 Replies)
I want to backup my partitions by shrinking it my issue is like
I want to create a new disk copy from only the used blocks I my current image.
How would I redirect the output of resize2fs to new disk and dd the current
partition so that I can boot my new image without issues and also without... (3 Replies)
Hi,
i have done a blunder here, i increased the swap space on Xen5.6 server machine using below steps :-
1056 dd if=/dev/zero of=/root/myswapfile bs=1M count=1024
1057 ls -l /root/myswapfile
1058 chmod 600 /root/myswapfile
1059 mkswap /root/myswapfile
1060 swapon /root/myswapfile
... (1 Reply)
Hi all,
Fedora 17, 64bit
Ubuntu 12.04 desktop 64bit
HD 160G
I installed Ubuntu 12.04 on the HD first taking up the whole disc. Later I added/installed Fedora 17 selecting the "Shrink" option and save the bootloader on /dev/sda1 to make them dualboot. Installation is successful with... (0 Replies)
My root file system is of type LVM. i wanna shrink it but unable to do so.
When i give the below command:
resize2fs /dev/mapper/VolGroup00-VolLog00 10000M
it messages that online shrink can't can't be done as the logical volume is mounted on /. i switched to single user mode by giving command:... (2 Replies)
Hi,
I need a suggesstion i have 2 disk if i installed OS / root partition by making Lvm in one disk and data in other disk also with the lvm, means 2 different lvms.
Is making LVM partition for OS disk will the performacne will be good?
Can i make 2 different lvm one is for OS and other for... (1 Reply)
Hello All,
I have a Red Hat Linux 5.9 Server installed with one hard disk & 2 Partitions created on it as follows,
/boot - Linux Partition & another is
LVM - One VG & under that 5-6 Logical volumes(var,opt,home etc).
Here my requirement is to take out 1GB of space from LVM ( Any logical... (5 Replies)
Hello everyone,
I am having an issue here with CentOS release 6.6 (Final) that shows all of the space used up, but I can't tell where the space went.
Seemingly I am using up 100%, according to
df -h
Filesystem Size Used Avail Use% Mounted on... (27 Replies)
Discussion started by: DannyBoyCentOS
27 Replies
LEARN ABOUT REDHAT
resize2fs
RESIZE2FS(8) System Manager's Manual RESIZE2FS(8)NAME
resize2fs - ext2 file system resizer
SYNOPSIS
resize2fs [ -d debug-flags ] [ -f ] [ -F ] [ -p ] device [ size ]
DESCRIPTION
The resize2fs program will resize ext2 file systems. It can be used to enlarge or shrink an ext2 file system located on device so that it
will have size blocks. If the size parameter is not specified, it will default to the size of the partition. The size parameter may never
be larger than the size of the partition.
The resize2fs program does not manipulate the size of partitions. If you wish to enlarge a filesystem, you must first make sure you can
expand the size of the underlying partition first. This can be done using fdisk(8) by deleting the partition and recreating it with a
larger size. When recreating the partition, make sure you create it with the same starting disk cylinder as before! Otherwise, the resize
operation will certainly not work, and you may lose your entire filesystem.
If you wish to shrink an ext2 partition, first use resize2fs to shrink the size of filesystem. Then you may use fdisk(8) to shrink the
size of the partition. When shrinking the size of the partition, make sure you do not make it smaller than the new size of the ext2
filesystem!
OPTIONS -d debug-flags
Turns on various resize2fs debugging features, if they have been compiled into the binary. debug-flags should be computed by adding
the numbers of the desired features from the following list:
1 - Print out all disk I/O
2 - Debug block relocations
8 - Debug inode relocations
16 - Debug moving the inode table
-p Prints out a percentage completion bars for each resize2fs operation, so that the user can keep track of what the program is doing.
-f Forces resize2fs to proceed with the filesystem resize operation, overriding some safety checks which resize2fs normally enforces.
-F Flush the filesystem device's buffer caches before beginning. Only really useful for doing resize2fs time trials.
AUTHOR
resize2fs was written by Theodore Ts'o <tytso@mit.edu>.
COPYRIGHT
Resize2fs is Copyright 1998 by Theodore Ts'o and PowerQuest, Inc. All rights reserved. As of April, 2000 Resize2fs may be redistributed
under the terms of the GPL.
SEE ALSO fdisk(8), e2fsck(8), mke2fs(8)E2fsprogs version 1.32 November 2002 RESIZE2FS(8)