| From 3d1922335f63c10b50527f210c05e039a51f69de Mon Sep 17 00:00:00 2001 |
| From: George McCollister <george.mccollister@gmail.com> |
| Date: Thu, 25 May 2017 21:13:50 -0500 |
| Subject: [PATCH] rules: Handle MMC boot partitions by-path correctly (#6026) |
| |
| Many eMMC devices have separate boot partitions that aren't part of the |
| normal partition table that show up as /dev/mmcblk[0-9]boot[0-9]. These |
| partitions are generally small (128KB to 16MB) and typically hold a boot |
| loader, boot loader data or a recovery image. Match these and create |
| -boot%n by-path symlinks. |
| |
| Prior to this change by-path symlinks for the main device would be |
| incorrectly linked to one of the boot partitions. |
| |
| For instance before: |
| /dev/disk/by-path/platform-219c000.usdhc linked to /dev/mmcblk1boot1 |
| |
| Now: |
| /dev/disk/by-path/platform-219c000.usdhc links to /dev/mmcblk1 |
| /dev/disk/by-path/platform-219c000.usdhc-boot0 links to /dev/mmcblk1boot0 |
| /dev/disk/by-path/platform-219c000.usdhc-boot1 links to /dev/mmcblk1boot1 |
| |
| On systems that support multiple SD/MMC devices it can be essential to |
| have by-path links to these devices since device names vary depending on |
| which other devices are connected. |
| (cherry picked from commit 4e3f07029ad7b86773ce85db422bbce95ac578cf) |
| |
| rules/60-persistent-storage.rules | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| diff --git a/rules/60-persistent-storage.rules b/rules/60-persistent-storage.rules |
| index 9817e9c64b..d2745f65f4 100644 |
| |
| |
| @@ -64,7 +64,8 @@ KERNEL=="msblk[0-9]p[0-9]|mspblk[0-9]p[0-9]", ENV{ID_NAME}=="?*", ENV{ID_SERIAL} |
| |
| # by-path |
| ENV{DEVTYPE}=="disk", DEVPATH!="*/virtual/*", IMPORT{builtin}="path_id" |
| -ENV{DEVTYPE}=="disk", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}" |
| +KERNEL=="mmcblk[0-9]boot[0-9]", ENV{DEVTYPE}=="disk", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}-boot%n" |
| +KERNEL!="mmcblk[0-9]boot[0-9]", ENV{DEVTYPE}=="disk", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}" |
| ENV{DEVTYPE}=="partition", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}-part%n" |
| |
| # legacy virtio-pci by-path links (deprecated) |