kaizenlpi/growlvmpart

Quick and dirty python script to automatically detecting disk resize, expand lvm partitions and fs

growlvmpart

Quick and dirty python script to automatically detecting disk resize, expand lvm partitions and fs.

Working only with one scenario: you need to grow FS if free space less then barrier, FS is on LV, PV is in MBR/GPT(not tested) partition, lying on hypervisor's disk that can be resized online.

Not well tested. May be buggy.

Requirements

• python2
• lvm2
• parted
• util-linux
• your FS utils

Usage

./growlvmpart.py --path <mount point> --min <minimal free space> [--max <maximum free space>]

For example:

./growlvmpart.py --path /var/lib/docker --min 1500m --max 4g

Size in bytes. You can use some units [bkmgt].

Algorithm

1. Exit if free space on FS greater then <minimum free space>
2. Rescan SCSI devices and hosts
3. Resize underlying partition
4. Resize PV
5. Resize LV and FS to size <used space> + <maximum free space>