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-rw-r--r--doc/guix.texi8
-rw-r--r--gnu/system/linux-initrd.scm7
2 files changed, 10 insertions, 5 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index ef3b8e127e..2d4f7d960e 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -37869,15 +37869,17 @@ here is how to use it and customize it further.
@cindex initrd
@cindex initial RAM disk
@deffn {Scheme Procedure} raw-initrd @var{file-systems} @
- [#:linux-modules '()] [#:mapped-devices '()] @
- [#:keyboard-layout #f] @
- [#:helper-packages '()] [#:qemu-networking? #f] [#:volatile-root? #f]
+ [#:linux-modules '()] [#:pre-mount #t] [#:mapped-devices '()] @
+ [#:keyboard-layout #f] [#:helper-packages '()] @
+ [#:qemu-networking? #f] [#:volatile-root? #f]
Return a derivation that builds a raw initrd. @var{file-systems} is
a list of file systems to be mounted by the initrd, possibly in addition to
the root file system specified on the kernel command line via @option{root}.
@var{linux-modules} is a list of kernel modules to be loaded at boot time.
@var{mapped-devices} is a list of device mappings to realize before
@var{file-systems} are mounted (@pxref{Mapped Devices}).
+@var{pre-mount} is a G-expression to evaluate before realizing
+@var{mapped-devices}.
@var{helper-packages} is a list of packages to be copied in the initrd.
It may
include @code{e2fsck/static} or other packages needed by the initrd to check
diff --git a/gnu/system/linux-initrd.scm b/gnu/system/linux-initrd.scm
index 4c4c78e444..58e95a1312 100644
--- a/gnu/system/linux-initrd.scm
+++ b/gnu/system/linux-initrd.scm
@@ -172,6 +172,7 @@ MODULES and taken from LINUX."
#:key
(linux linux-libre)
(linux-modules '())
+ (pre-mount #t)
(mapped-devices '())
(keyboard-layout #f)
(helper-packages '())
@@ -183,7 +184,8 @@ modules taken from LINUX. FILE-SYSTEMS is a list of file-systems to be
mounted by the initrd, possibly in addition to the root file system specified
on the kernel command line via 'root'. LINUX-MODULES is a list of kernel
modules to be loaded at boot time. MAPPED-DEVICES is a list of device
-mappings to realize before FILE-SYSTEMS are mounted.
+mappings to realize before FILE-SYSTEMS are mounted. PRE-MOUNT is a
+G-expression to evaluate before realizing MAPPED-DEVICES.
HELPER-PACKAGES is a list of packages to be copied in the initrd. It may include
e2fsck/static or other packages needed by the initrd to check root partition.
@@ -255,7 +257,8 @@ upon error."
(map spec->file-system
'#$(map file-system->spec file-systems))
#:pre-mount (lambda ()
- (and #$@device-mapping-commands
+ (and #$pre-mount
+ #$@device-mapping-commands
#$@file-system-scan-commands))
#:linux-modules '#$linux-modules
#:linux-module-directory '#$kodir