Updated and improved, now autosnapshots according to policy via cron.
This commit is contained in:
parent
04d2d424af
commit
60e606d4b5
134
020_sanoid.sh
134
020_sanoid.sh
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@ -41,7 +41,7 @@ conf_print_syncoid_cron() {
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*/15 * * * * root [ -f /etc/sanoid/syncoid.conf ] && if [ ! -d /run/systemd/system ]; then TZ=UTC /usr/sbin/syncoid --cron --quiet; fi
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EOF
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}
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conf_print_syncoid_cron | sudo tee /etc/cron.d/syncoid
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# conf_print_syncoid_cron | sudo tee /etc/cron.d/syncoid
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# Copied from /usr/share/doc/sanoid/example.conf
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sudo mkdir -p /etc/sanoid/
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@ -50,16 +50,15 @@ conf_print_sanoid() {
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cat <<-EOF
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[rpool/docker]
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use_template = ignore
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recursive = yes
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[rpool/archive]
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use_template = ignore
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recursive = yes
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[rpool/swap]
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use_template = ignore
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[rpool/tmp]
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use_template = ignore
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recursive = yes
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[rpool/ROOT/devuan-1]
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use_template = root
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@ -72,12 +71,14 @@ conf_print_sanoid() {
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# rpool/ROOT/devuan-1/var
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# rpool/ROOT/devuan-1/var_lib
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# Specific override for Virtual Machines to use scripts
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[rpool/ROOT/devuan-1/var_lib_virt]
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use_template = root
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# Custom script to freeze VMs before snapshotting
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recursive = no
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pre_snapshot_script = /usr/local/bin/virt-freeze-all.sh
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post_snapshot_script = /usr/local/bin/virt-thaw-all.sh
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# -- User Data --
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[rpool/home]
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use_template = production
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recursive = yes
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@ -89,11 +90,6 @@ conf_print_sanoid() {
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# templates below this line #
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#############################
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# name your templates template_templatename. you can create your own, and
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# use them in your module definitions above.
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[template_demo]
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daily = 60
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[template_production]
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frequently = 0
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hourly = 36
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@ -103,7 +99,21 @@ conf_print_sanoid() {
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autosnap = yes
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autoprune = yes
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[template_backup]
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[template_root]
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# Root changes fast; shorter history often suffices
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hourly = 24
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daily = 7
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monthly = 1
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yearly = 0
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autosnap = yes
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autoprune = yes
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[template_ignore]
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autoprune = no
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autosnap = no
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monitor = no
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[template_backup]
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autoprune = yes
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frequently = 0
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hourly = 30
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@ -162,20 +172,6 @@ conf_print_sanoid() {
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#force_post_snapshot_script = yes
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### limit allowed execution time of scripts before continuing (<= 0: infinite)
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script_timeout = 5
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[template_root]
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# Root changes fast; shorter history often suffices
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hourly = 24
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daily = 7
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monthly = 1
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yearly = 0
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autosnap = yes
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autoprune = yes
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[template_ignore]
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autoprune = no
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autosnap = no
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monitor = no
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EOF
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}
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conf_print_sanoid | sudo tee /etc/sanoid/sanoid.conf
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@ -193,6 +189,8 @@ conf_print_sanoid_init() {
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# Provides: sanoid
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# Required-Start: $syslog $local_fs $remote_fs
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# Required-Stop: $syslog $local_fs $remote_fs
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# Default-Start: 2 3 4 5
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# Default-Stop: 0 1 6
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# Short-Description: Snapshot ZFS filesystems
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### END INIT INFO
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@ -251,8 +249,9 @@ conf_print_sanoid_init() {
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esac
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EOF
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}
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conf_print_sanoid_init | sudo tee /etc/init.d/sanoid
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sudo chmod +x /etc/init.d/sanoid
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# Sandoid doesn't ran as a daemon it runs vi cron
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# conf_print_sanoid_init | sudo tee /etc/init.d/sanoid
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# sudo chmod +x /etc/init.d/sanoid
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# Generated using:
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# https://raw.githubusercontent.com/akhilvij/systemd-to-sysvinit-converter/master/converter.py
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@ -323,8 +322,9 @@ conf_print_sanoid-prune_init() {
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esac
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EOF
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}
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conf_print_sanoid-prune_init | sudo tee /etc/init.d/sanoid-prune
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sudo chmod +x /etc/init.d/sanoid-prune
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# Sandoid doesn't ran as a daemon it runs vi cron
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# conf_print_sanoid-prune_init | sudo tee /etc/init.d/sanoid-prune
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# sudo chmod +x /etc/init.d/sanoid-prune
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# Give sudo access to virsh or is part of the libvirt group.
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# qemu-guest-agent must be running in the vm
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@ -341,19 +341,27 @@ if [ -z "$VM_NAME" ]; then
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fi
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# Check if the VM is running
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STATE=$(virsh domstate "$VM_NAME")
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STATE=$(virsh domstate "$VM_NAME" 2>/dev/null)
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if [ "$STATE" != "running" ]; then
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echo "VM $VM_NAME is not running. Skipping freeze."
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echo "VM $VM_NAME is not running or does not exist. Skipping freeze."
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exit 0
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fi
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echo "Freezing filesystems for $VM_NAME..."
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virsh qemu-agent-command "$VM_NAME" '{"execute":"guest-fsfreeze-freeze"}'
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# domfsfreeze returns the number of frozen filesystems on success
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if virsh domfsfreeze "$VM_NAME" > /dev/null; then
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echo "Successfully frozen $VM_NAME."
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else
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echo "Error: Failed to freeze $VM_NAME. Ensure qemu-guest-agent is active."
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exit 1
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fi
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EOF
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}
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conf_print_virt_freeze | sudo tee /usr/local/bin/virt-freeze.sh
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sudo chmod +x /usr/local/bin/virt-freeze.sh
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#---
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conf_print_virt_unfreeze() {
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cat <<'EOF'
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#!/bin/sh
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@ -367,26 +375,34 @@ if [ -z "$VM_NAME" ]; then
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fi
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# Check if the VM is running
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STATE=$(virsh domstate "$VM_NAME")
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STATE=$(virsh domstate "$VM_NAME" 2>/dev/null)
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if [ "$STATE" != "running" ]; then
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echo "VM $VM_NAME is not running. Skipping unfreeze."
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exit 0
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fi
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echo "Thawing filesystems for $VM_NAME..."
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virsh qemu-agent-command "$VM_NAME" '{"execute":"guest-fsfreeze-thaw"}'
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# domfsthaw returns the number of thawed filesystems on success
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if virsh domfsthaw "$VM_NAME" > /dev/null; then
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echo "Successfully thawed $VM_NAME."
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else
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echo "Error: Failed to thaw $VM_NAME."
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exit 1
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fi
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EOF
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}
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conf_print_virt_unfreeze | sudo tee /usr/local/bin/virt-unfreeze.sh
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sudo chmod +x /usr/local/bin/virt-unfreeze.sh
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conf_print_virt_thaw-all() {
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#---
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conf_print_virt_thaw_all() {
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cat <<'EOF'
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#!/bin/sh
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#!/bin/bash
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# /usr/local/bin/virt-thaw-all.sh
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# 1. Get a list of all running VM names
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RUNNING_VMS=$(virsh list --state-running --name)
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# 1. Get running VM names, filtering out empty lines with awk
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RUNNING_VMS=$(virsh list --state-running --name | awk 'NF')
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if [ -z "$RUNNING_VMS" ]; then
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echo "No running VMs found."
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@ -397,30 +413,31 @@ fi
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for VM_NAME in $RUNNING_VMS; do
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echo "Processing $VM_NAME..."
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# Execute the thaw command via QEMU guest agent
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# Note: This requires the guest-agent to be installed/running inside the VM
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RESPONSE=$(virsh qemu-agent-command "$VM_NAME" '{"execute":"guest-fsfreeze-thaw"}' 2>&1)
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if [ $? -eq 0 ]; then
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# Use the native thaw command.
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# It handles the guest agent communication for you.
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if virsh domfsthaw "$VM_NAME" > /dev/null 2>&1; then
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echo "Successfully thawed $VM_NAME."
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else
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echo "Error thawing $VM_NAME: $RESPONSE"
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# If native fails, we capture the error for the user
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ERROR=$(virsh domfsthaw "$VM_NAME" 2>&1)
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echo "Error thawing $VM_NAME: $ERROR"
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fi
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done
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echo "Finished processing all VMs."
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EOF
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}
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conf_print_virt_thaw-all | sudo tee /usr/local/bin/virt-thaw-all.sh
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conf_print_virt_thaw_all | sudo tee /usr/local/bin/virt-thaw-all.sh
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sudo chmod +x /usr/local/bin/virt-thaw-all.sh
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#---
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conf_print_virt_freeze-all() {
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cat <<'EOF'
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#!/bin/sh
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# /usr/local/bin/virt-freeze-all.sh
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#!/bin/bash
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# 1. Get a list of all running VM names
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RUNNING_VMS=$(virsh list --state-running --name)
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# 1. Get running VM names, filtering out empty lines
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RUNNING_VMS=$(virsh list --state-running --name | awk 'NF')
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if [ -z "$RUNNING_VMS" ]; then
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echo "No running VMs found."
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@ -429,17 +446,14 @@ fi
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# 2. Loop through each running VM
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for VM_NAME in $RUNNING_VMS; do
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echo "Processing $VM_NAME..."
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echo "Attempting to freeze $VM_NAME..."
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# Execute the freeze command via QEMU guest agent
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# This flushes disk buffers and halts I/O
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RESPONSE=$(virsh qemu-agent-command "$VM_NAME" '{"execute":"guest-fsfreeze-freeze"}' 2>&1)
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if [ $? -eq 0 ]; then
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# The response usually contains the number of filesystems frozen
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echo "Successfully frozen $VM_NAME. Details: $RESPONSE"
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# Using the native virsh command is generally cleaner
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# It returns the number of frozen filesystems on success
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if virsh domfsfreeze "$VM_NAME" > /dev/null 2>&1; then
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echo "Successfully frozen $VM_NAME."
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else
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echo "Error freezing $VM_NAME: $RESPONSE"
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echo "Error: Could not freeze $VM_NAME. Check if QEMU Guest Agent is running."
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fi
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done
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@ -449,6 +463,8 @@ EOF
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conf_print_virt_freeze-all | sudo tee /usr/local/bin/virt-freeze-all.sh
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sudo chmod +x /usr/local/bin/virt-freeze-all.sh
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#---
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# exit 0
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#
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# # build a debian package from the git repo
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