G10k ZFS

Description

Add ZFS snapshot capability to G10K.

• creates a new ZFS r/o snapshot whose name contains a timestamp (i.e.: code/g10k@Date-06-Jan-2020_Time-16.28.42)
• unmount the currently mounted snapshot
• mount the new snapshot
• deletes the old snapshot

Requirements

• 1. ZOL (ZFS On Linux) configured on Linux
• 2. One ZFS Pool configured (this tool will create a filesystem called g10k inside your pool and mount it, by default, on /g10k). You can follow one of these steps:
  • 2.1. read this help page: setup-zfs-storage-pool
  • 2.2. use Puppet to create the pool: zfs_core.
• 3. The default mount point is /etc/puppetlabs/code, which means that you need to populate the filesystem with all the files that you had under /etc/puppetlabs/code
• 4. if you intend to use g10k hard-links, you need to add the cache directory inside this same filesystem.
• 5. g10k will be pointing to the mount point /g10k. This is the read/write mount point. The mount point on /etc/puppetlabs/code is a read only mount point for the snapshot (i.e. g10k could not write there)

Usage

  g10k-zfs --pool=POOL [--mountpoint=MOUNTPOINT] [--owner=OWNER] [--group=GROUP] [--g10k-mount=G10KMOUNT] [--fix-owner] [--debug]
  g10k-zfs -v | --version
  g10k-zfs -b | --build
  g10k-zfs -h | --help

Options:
  -h --help                   Show this screen
  -p --pool=POOL              ZFS Pool
  -m --mountpoint=MOUNTPOINT  Output file [default: /etc/puppetlabs/code]
  -f --fix-owner              Whether to fix file ownership
  -o --owner=OWNER            Files owner [default: puppet]
  -g --group=GROUP            Files group [default: puppet]
  -k --g10k-mount=G10KMOUNT   G10k mount point [default: /g10k]
  -d --debug                  Print messages to console
  -v --version                Print version exit
  -b --build                  Print version and build information and exit

Examples

Valid examples are:

g10k-zfs -p code -d

for testing purpose you may want to run it outside of your production code directory:

g10k-zfs -p code -m /my/destination -d

Installation

to compile the latest tag:

git clone git@github.com:maxadamo/g10k-zfs.git
cd g10k-zfs
./build.sh