Sync from SUSE:SLFO:Main systemd-zram-service revision d81346ed0e9d3e93e5de0255f3476b08

.gitattributes

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+## Default LFS
+*.7z filter=lfs diff=lfs merge=lfs -text
+*.bsp filter=lfs diff=lfs merge=lfs -text
+*.bz2 filter=lfs diff=lfs merge=lfs -text
+*.gem filter=lfs diff=lfs merge=lfs -text
+*.gz filter=lfs diff=lfs merge=lfs -text
+*.jar filter=lfs diff=lfs merge=lfs -text
+*.lz filter=lfs diff=lfs merge=lfs -text
+*.lzma filter=lfs diff=lfs merge=lfs -text
+*.obscpio filter=lfs diff=lfs merge=lfs -text
+*.oxt filter=lfs diff=lfs merge=lfs -text
+*.pdf filter=lfs diff=lfs merge=lfs -text
+*.png filter=lfs diff=lfs merge=lfs -text
+*.rpm filter=lfs diff=lfs merge=lfs -text
+*.tbz filter=lfs diff=lfs merge=lfs -text
+*.tbz2 filter=lfs diff=lfs merge=lfs -text
+*.tgz filter=lfs diff=lfs merge=lfs -text
+*.ttf filter=lfs diff=lfs merge=lfs -text
+*.txz filter=lfs diff=lfs merge=lfs -text
+*.whl filter=lfs diff=lfs merge=lfs -text
+*.xz filter=lfs diff=lfs merge=lfs -text
+*.zip filter=lfs diff=lfs merge=lfs -text
+*.zst filter=lfs diff=lfs merge=lfs -text

systemd-zram-service.changes

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+-------------------------------------------------------------------
+Wed Sep  7 00:00:00 CEST 2022 - dsterba@suse.cz
+
+- disable multi-zram devices (deprecated, not necessary since 4.7)
+- change compression to zstd
+
+-------------------------------------------------------------------
+Mon Dec 13 16:18:04 UTC 2021 - Johannes Segitz <jsegitz@suse.com>
+
+- Drop hardenings again. The current set causes issues (bsc#1193402)
+
+-------------------------------------------------------------------
+Wed Nov 24 12:39:05 UTC 2021 - Johannes Segitz <jsegitz@suse.com>
+
+- Added hardening to systemd service(s) (bsc#1181400). Modified:
+  * zramswap.service
+
+-------------------------------------------------------------------
+Mon Dec 17 22:59:00 UTC 2018 - malcolmlewis@opensuse.org
+
+- Improve package description.
+
+-------------------------------------------------------------------
+Mon Nov 19 14:31:00 UTC 2018 - malcolmlewis@opensuse.org
+
+- Cleanup spec file for submission, (boo#1116056).
+
+-------------------------------------------------------------------
+Tue Feb  7 16:13:34 UTC 2012 - malcolmlewis@opensuse.org
+
+- Initial build.
+

systemd-zram-service.spec

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+#
+# spec file for package systemd-zram-service
+#
+# Copyright (c) 2022 SUSE LLC
+# Copyright (c) 2012-2018 Malcolm J Lewis <malcolmlewis@opensuse.org>
+#
+# All modifications and additions to the file contributed by third parties
+# remain the property of their copyright owners, unless otherwise agreed
+# upon. The license for this file, and modifications and additions to the
+# file, is the same license as for the pristine package itself (unless the
+# license for the pristine package is not an Open Source License, in which
+# case the license is the MIT License). An "Open Source License" is a
+# license that conforms to the Open Source Definition (Version 1.9)
+# published by the Open Source Initiative.
+
+# Please submit bugfixes or comments via https://bugs.opensuse.org/
+#
+
+
+Name:           systemd-zram-service
+Version:        0.2.1
+Release:        0
+Summary:        Systemd service for zram
+License:        GPL-2.0-only
+Group:          System/Daemons
+URL:            https://code.launchpad.net/~elementary-os/elementaryos/zramswap-enabler
+Source0:        zramswap-enabler-0.2.1.tar.bz2
+#Source0:       bzr branch lp:~elementary-os/elementaryos/zramswap-enabler
+Source1:        zramswapon
+Source2:        zramswapoff
+Source3:        zramswap.service
+Conflicts:      compcache
+BuildRoot:      %{_tmppath}/%{name}-%{version}-build
+BuildArch:      noarch
+%systemd_requires
+
+%description
+A successor to compcache, zRam, has been already integrated in the Linux kernel
+for a while now. This means that no additional compilation nor tweaking is
+required to benefit from compressing memory on the fly and massively reduced
+swapping.
+
+This package contains command line scripts zramswapon, zramswapoff to enable
+zRam devices as required, or at boot time via a systemd service.
+
+Individual Compressed RAM Block Devices are created based on cores/threads
+available, the size of each block device is calculated on cores/threads divided
+by total ram installed. The final total is then added to system swap.
+
+%prep
+%setup -q -n zramswap-enabler-%{version}
+
+%build
+# No building required, just a placehoder.
+
+%install
+mkdir -p %{buildroot}%{_sbindir}
+install -m 0755 %{S:1} %{S:2} %{buildroot}%{_sbindir}/
+mkdir -p %{buildroot}%{_unitdir}
+install -m 0644 %{S:3} %{buildroot}%{_unitdir}/
+pushd %{buildroot}%{_sbindir}
+ln -s service rczramswap
+popd
+
+%pre
+%service_add_pre zramswap.service
+
+%post
+%service_add_post zramswap.service
+
+%preun
+%service_del_preun zramswap.service
+
+%postun
+%service_del_postun zramswap.service
+
+%files
+%defattr(-,root,root,-)
+%doc debian/copyright debian/changelog
+%{_sbindir}/rczramswap
+%{_sbindir}/zramswap*
+%{_unitdir}/zramswap.service
+
+%changelog

zramswap.service

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+# /lib/systemd/system/zramswap.service
+#
+# Copyright (c) 2012-2018 Malcolm J Lewis <malcolmlewis@opensuse.org>
+#
+
+[Unit]
+Description=Service enabling compressing RAM with zRam
+After=multi-user.target
+
+[Service]
+Type=oneshot
+ExecStart=/usr/sbin/zramswapon
+ExecStop=/usr/sbin/zramswapoff
+RemainAfterExit=yes
+
+[Install]
+WantedBy=multi-user.target

zramswapoff

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+#!/bin/bash
+
+# Switching off swap
+swapoff /dev/zram0
+
+rmmod zram

zramswapon

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+#!/bin/bash
+
+# get the amount of memory in the machine
+mem_total_kb=$(grep MemTotal /proc/meminfo | grep -E --only-matching '[[:digit:]]+')
+mem_total=$((mem_total_kb * 1024))
+
+# load the dependency module
+modprobe zram
+
+# initialize the device with zstd compression algorithm
+echo zstd > /sys/block/zram0/comp_algorithm;
+echo $mem_total > /sys/block/zram0/disksize
+
+# Creating the swap filesystem
+mkswap /dev/zram0
+
+# Switch the swaps on
+swapon -p 100 /dev/zram0