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grub-btrfs: add custom kernel parameters option for snapshots

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Fix #214, #160

Signed-off-by: Pascal Jäger <pascal.jaeger@leimstift.de>
This commit is contained in:
Pascal Jäger
2022-12-06 22:56:44 +01:00
parent f0ed56d242
commit 934ab213b0
5 changed files with 40 additions and 8 deletions
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manpages/grub-btrfs.8.man
+17 -4
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@@ -1,4 +1,4 @@
.TH "grub-btrfs" "1"
.TH "grub-btrfs" "8"
.SH "NAME"
.PP
@@ -114,6 +114,17 @@ Example: \fCGRUB_BTRFS_NKERNEL=("kernel\-5.19.4\-custom" "vmlinux\-5.19.4\-custo
\fCGRUB_BTRFS_NINIT=("initramfs\-5.19.4\-custom.img" "initrd\-5.19.4\-custom.img" "otherinit\-5.19.4\-custom.gz")\fP
\fCGRUB_BTRFS_CUSTOM_MICROCODE=("custom\-ucode.img" "custom\-uc.img "custom_ucode.cpio")\fP
.SS "\fCGRUB_BTRFS_SNAPSHOT_KERNEL_PARAMETERS\fP"
.PP
Additonal kernel command line parameters that should be passed to the kernelwhen
booting a snapshot.
For dracut based distros this could be useful to pass “rd.live.overlay.overlayfs=1”
or “rd.live.overlay.readonly=1” to the Kernel for booting read only snapshots.
.IP \(em 4
Default: “”
.IP \(em 4
Example: \fCGRUB_BTRFS_SNAPSHOT_KERNEL_PARAMETERS="rd.live.overlay.overlayfs=1"\fP
.SS "SNAPSHOT FILTERING"
.SS "\fCGRUB_BTRFS_IGNORE_SPECIFIC_PATH\fP"
.PP
@@ -168,7 +179,6 @@ Example: \fCGRUB_BTRFS_BOOT_DIRNAME="/"\fP
.SS "\fCGRUB_BTRFS_GRUB_DIRNAME\fP"
.PP
Location of the folder containing the “grub.cfg” file.
Used by grub-btrfs to save the file “grub-btrfs.cfg”.
Might be grub2 on some systems.
For example, on Fedora with EFI : “/boot/efi/EFI/fedora”
.IP \(em 4
@@ -183,9 +193,13 @@ Some distributions (like OpenSuSE) store those file at the snapshot directory
instead of boot. Be aware that this direcory must be available for grub during
startup of the system.
.IP \(em 4
Default: “/boot/grub”
Default: $GRUB\d\s-2BTRFS\s+2\u\d\s-2GRUB\s+2\u\d\s-2DIRNAME\s+2\u
.IP \(em 4
<<<<<<< HEAD
Example: \fCGRUB_BTRFS_GBTRFS_DIRNAME="/.snapshots"\fP
=======
Example \fCGRUB_BTRFS_GBTRFS_DIRNAME="/boot/grub2"\fP
>>>>>>> e76cdc4 (grub-btrfs: add custom kernel parameters option for snapshots)
.SS "\fCGRUB_BTRFS_GBTRFS_SEARCH_DIRNAME\fP"
.PP
@@ -204,7 +218,6 @@ with `$\` before the `$`
.IP \(em 4
Example: GRUB\d\s-2BTRFS\s+2\u\d\s-2GBTRFS\s+2\u\d\s-2SEARCH\s+2\u\d\s-2DIRNAME\s+2\u=“\${prefix}”
.SS "\fCGRUB_BTRFS_MKCONFIG\fP"
.PP
Name/path of the command to generate the grub menu, used by “grub-btrfs.service”
manpages/grub-btrfs.8.org
+8
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@@ -83,6 +83,14 @@ Customs kernel, initramfs and microcodes that are not detected can be added in t
~GRUB_BTRFS_NINIT=("initramfs-5.19.4-custom.img" "initrd-5.19.4-custom.img" "otherinit-5.19.4-custom.gz")~
~GRUB_BTRFS_CUSTOM_MICROCODE=("custom-ucode.img" "custom-uc.img "custom_ucode.cpio")~
*** ~GRUB_BTRFS_SNAPSHOT_KERNEL_PARAMETERS~
Additonal kernel command line parameters that should be passed to the kernelwhen
booting a snapshot.
For dracut based distros this could be useful to pass "rd.live.overlay.overlayfs=1"
or "rd.live.overlay.readonly=1" to the Kernel for booting read only snapshots.
- Default: ""
- Example: ~GRUB_BTRFS_SNAPSHOT_KERNEL_PARAMETERS="rd.live.overlay.overlayfs=1"~
** SNAPSHOT FILTERING
*** ~GRUB_BTRFS_IGNORE_SPECIFIC_PATH~