39 lines
1017 B
Bash
39 lines
1017 B
Bash
#!/usr/bin/env bash
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POOL_NAME=rpool
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# Create zfs snapshots before apt operations using apt hooks
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# 1. Create a Snapshot Script
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# Create /usr/local/sbin/snapPrepApt
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conf_print_snapPrepApt() {
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cat <<EOF
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#!/bin/bash
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DATE="'$(date +%F-%T)'"
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zfs snapshot -r ${POOL_NAME}@snap_pre_apt_$DATE
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EOF
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}
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conf_print_snapPrepApt | sudo tee /usr/local/sbin/snapPrepApt
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sudo chmod +x /usr/local/sbin/snapPrepApt
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# 2. Add Apt Hook
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# Create /etc/apt/apt.conf.d/90zfs-pre-apt-snapshot
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conf_print_apt_conf_d() {
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cat <<EOF
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DPkg::Pre-Invoke {"/usr/local/sbin/snapPrepApt || true";};
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EOF
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}
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conf_print_apt_conf_d | sudo tee /etc/apt/apt.conf.d/90zfs-pre-apt-snapshot
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chmod +x /etc/apt/apt.conf.d/90zfs-pre-apt-snapshot
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# 3. Kernel Updates
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# Use /etc/kernel/preinst.d/ to snapshot before kernel installation:
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conf_print_kernel_preinst_d() {
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cat <<EOF
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#!/bin/bash
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DATE='$(date +%F-%T)'
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zfs snapshot -r ${POOL_NAME}@pre-kernel_${DATE}
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EOF
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}
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conf_print_kernel_preinst_d | sudo tee /etc/kernel/preinst.d/90zfs-pre-kernel-snapshot
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