resize lvm partition ext4 – Scott Mcintyre https://scott.cm Web Operations Engineer, Linux Systems Administrator, mySQL DBA, MongoDB DBA, Python+PHP Developer, Performance Engineer Sat, 19 Jan 2013 07:59:22 +0000 en-US hourly 1 https://wordpress.org/?v=5.2.2 Resizing ext4 partition centos 5 https://scott.cm/resizing-ext4-partition-centos-5/ https://scott.cm/resizing-ext4-partition-centos-5/#respond Sat, 19 Jan 2013 07:58:09 +0000 https://scott.cm/?p=233 On CentOS 5 the e4fsprogs RPM provides a separate binary (/sbin/resize4fs) for resizing ext4 partitions.

# rpm -qf /sbin/resize2fs
e2fsprogs-1.39-23.el5_5.1
# rpm -qf /sbin/resize4fs
e4fsprogs-1.41.9-3.el5

As I found out today when resizing an LVM partition on one of our mongodb snapshot systems.

# lvextend -L+50G /dev/mapper/mongo
Extending logical volume mongo to 150.00 GB
Logical volume mongo successfully resized
# resize2fs /dev/mapper/mongo
resize2fs 1.39 (29-May-2006)
resize2fs: Filesystem has unsupported feature(s) while trying to open /dev/mapper/mongo
Couldn’t find valid filesystem superblock.

Having alook around I noticed the resize4fs binary which resized it successfully.

# resize4fs /dev/mapper/mongo
resize4fs 1.41.9 (22-Aug-2009)
Filesystem at /dev/mapper/mongo is mounted on /var/lib/mongodb; on-line resizing required
old desc_blocks = 7, new_desc_blocks = 10
Performing an on-line resize of /dev/mapper/mongo to 39321600 (4k) blocks.

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