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[bug#41143] [PATCH v2 2/2] mapped-devices: Add 'lvm-device-mapping'.
|
From: |
Mikhail Tsykalov |
|
Subject: |
[bug#41143] [PATCH v2 2/2] mapped-devices: Add 'lvm-device-mapping'. |
|
Date: |
Fri, 2 Oct 2020 01:49:00 +0300 |
* gnu/system/mapped-devices.scm (lvm-device-mapping, open-lvm-device,
close-lvm-device): New variables.
* gnu/tests/install.scm (%lvm-separate-home-os,
%lvm-separate-home-os-source, %lvm-separate-home-installation-script,
%test-lvm-separate-home-os): New variables.
* gnu/system/linux-initrd.scm (raw-initrd): Add (srfi srfi-1) to initrd
expression.
---
gnu/system/linux-initrd.scm | 1 +
gnu/system/mapped-devices.scm | 25 +++++++++-
gnu/tests/install.scm | 87 +++++++++++++++++++++++++++++++++++
3 files changed, 111 insertions(+), 2 deletions(-)
diff --git a/gnu/system/linux-initrd.scm b/gnu/system/linux-initrd.scm
index db02059a26..41cbe28c3c 100644
--- a/gnu/system/linux-initrd.scm
+++ b/gnu/system/linux-initrd.scm
@@ -217,6 +217,7 @@ upon error."
(gnu system file-systems)
((guix build utils) #:hide (delete))
(guix build bournish) ;add the 'bournish' meta-command
+ (srfi srfi-1)
(srfi srfi-26)
;; FIXME: The following modules are for
diff --git a/gnu/system/mapped-devices.scm b/gnu/system/mapped-devices.scm
index 8622418fcf..8088bd99a3 100644
--- a/gnu/system/mapped-devices.scm
+++ b/gnu/system/mapped-devices.scm
@@ -36,7 +36,7 @@
#:autoload (gnu build linux-modules)
(missing-modules)
#:autoload (gnu packages cryptsetup) (cryptsetup-static)
- #:autoload (gnu packages linux) (mdadm-static)
+ #:autoload (gnu packages linux) (mdadm-static lvm2-static)
#:use-module (srfi srfi-1)
#:use-module (srfi srfi-26)
#:use-module (srfi srfi-34)
@@ -64,7 +64,8 @@
check-device-initrd-modules ;XXX: needs a better place
luks-device-mapping
- raid-device-mapping))
+ raid-device-mapping
+ lvm-device-mapping))
;;; Commentary:
;;;
@@ -296,4 +297,24 @@ TARGET (e.g., \"/dev/md0\"), using 'mdadm'."
(open open-raid-device)
(close close-raid-device)))
+(define (open-lvm-device source targets)
+ #~(and
+ (zero? (system* #$(file-append lvm2-static "/sbin/lvm")
+ "vgchange" "--activate" "ay" #$source))
+ ; /dev/mapper nodes are usually created by udev, but udev may be
unavailable at the time we run this. So we create them here.
+ (zero? (system* #$(file-append lvm2-static "/sbin/lvm")
+ "vgscan" "--mknodes"))
+ (every file-exists? (map (lambda (file) (string-append "/dev/mapper/"
file))
+ '#$targets))))
+
+
+(define (close-lvm-device source targets)
+ #~(zero? (system* #$(file-append lvm2-static "/sbin/lvm")
+ "vgchange" "--activate" "n" #$source)))
+
+(define lvm-device-mapping
+ (mapped-device-kind
+ (open open-lvm-device)
+ (close close-lvm-device)))
+
;;; mapped-devices.scm ends here
diff --git a/gnu/tests/install.scm b/gnu/tests/install.scm
index dee2b870e8..84fe8bda78 100644
--- a/gnu/tests/install.scm
+++ b/gnu/tests/install.scm
@@ -65,6 +65,7 @@
%test-btrfs-root-on-subvolume-os
%test-jfs-root-os
%test-f2fs-root-os
+ %test-lvm-separate-home-os
%test-gui-installed-os
%test-gui-installed-os-encrypted
@@ -794,6 +795,92 @@ build (current-guix) and then store a couple of full
system images.")
(run-basic-test %encrypted-root-os command "encrypted-root-os"
#:initialization enter-luks-passphrase)))))
+
+;;;
+;;; Separate /home on LVM
+;;;
+
+; Since LVM support in guix currently doesn't allow root-on-LVM we use /home
on LVM
+(define-os-with-source (%lvm-separate-home-os %lvm-separate-home-os-source)
+ (use-modules (gnu) (gnu tests))
+
+ (operating-system
+ (host-name "separate-home-on-lvm")
+ (timezone "Europe/Paris")
+ (locale "en_US.utf8")
+
+ (bootloader (bootloader-configuration
+ (bootloader grub-bootloader)
+ (target "/dev/vdb")))
+ (kernel-arguments '("console=ttyS0"))
+
+ (mapped-devices (list (mapped-device
+ (source "vg0")
+ (target "vg0-home")
+ (type lvm-device-mapping))))
+ (file-systems (cons* (file-system
+ (device (file-system-label "root-fs"))
+ (mount-point "/")
+ (type "ext4"))
+ (file-system
+ (device "/dev/mapper/vg0-home")
+ (mount-point "/home")
+ (type "ext4")
+ (dependencies mapped-devices))
+ %base-file-systems))
+ (users %base-user-accounts)
+ (services (cons (service marionette-service-type
+ (marionette-configuration
+ (imported-modules '((gnu services herd)
+ (guix combinators)))))
+ %base-services))))
+
+(define %lvm-separate-home-installation-script
+ "\
+. /etc/profile
+set -e -x
+guix --version
+
+export GUIX_BUILD_OPTIONS=--no-grafts
+parted --script /dev/vdb mklabel gpt \\
+ mkpart primary ext2 1M 3M \\
+ mkpart primary ext2 3M 1.6G \\
+ mkpart primary 1.6G 3.2G \\
+ set 1 boot on \\
+ set 1 bios_grub on
+pvcreate /dev/vdb3
+vgcreate vg0 /dev/vdb3
+lvcreate -L 1.6G -n home vg0
+vgchange -ay
+mkfs.ext4 -L root-fs /dev/vdb2
+mkfs.ext4 /dev/mapper/vg0-home
+mount /dev/vdb2 /mnt
+mkdir /mnt/home
+mount /dev/mapper/vg0-home /mnt/home
+df -h /mnt /mnt/home
+herd start cow-store /mnt
+mkdir /mnt/etc
+cp /etc/target-config.scm /mnt/etc/config.scm
+guix system init /mnt/etc/config.scm /mnt --no-substitutes
+sync
+reboot\n")
+
+(define %test-lvm-separate-home-os
+ (system-test
+ (name "lvm-separate-home-os")
+ (description
+ "Test functionality of an OS installed with a LVM /home partition")
+ (value
+ (mlet* %store-monad ((image (run-install %lvm-separate-home-os
+ %lvm-separate-home-os-source
+ #:script
+
%lvm-separate-home-installation-script
+ #:packages (list lvm2-static)
+ #:target-size (* 3200 MiB)))
+ (command (qemu-command/writable-image image)))
+ (run-basic-test %lvm-separate-home-os
+ `(,@command) "lvm-separate-home-os")))))
+
;;;
;;; Btrfs root file system.
--
2.28.0