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authorMikhail Tsykalov <tsymsh@gmail.com>2020-11-06 12:47:38 +0300
committerLudovic Courtès <ludo@gnu.org>2020-11-26 00:05:39 +0100
commita9a2fdaabcc78e7a54d9a6bcfa4ee3de308e9a90 (patch)
tree1852c17d33cc33ce572810f8042fe5c24a7ef235 /gnu/system
parent788df2ecd62d5c2fc0d94928f45c947e6393e20b (diff)
mapped-devices: Add 'lvm-device-mapping'.
* 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. Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Diffstat (limited to 'gnu/system')
-rw-r--r--gnu/system/linux-initrd.scm1
-rw-r--r--gnu/system/mapped-devices.scm25
2 files changed, 24 insertions, 2 deletions
diff --git a/gnu/system/linux-initrd.scm b/gnu/system/linux-initrd.scm
index 3e2f1282cc..85e493fecb 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) ;for lvm-device-mapping
(srfi srfi-26)
;; FIXME: The following modules are for
diff --git a/gnu/system/mapped-devices.scm b/gnu/system/mapped-devices.scm
index 8b5aec983d..559c27bb28 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:
;;;
@@ -304,4 +305,24 @@ 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