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authorMartin Pitt <martin.pitt@ubuntu.com>2015-02-11 15:26:52 +0100
committerMartin Pitt <martin.pitt@ubuntu.com>2015-02-13 08:39:07 +0100
commitb87b01cf83947f467f3c46d9831cd67955fc46b9 (patch)
tree4d746ed265a58ce4652af2520b38d348e2108e55 /rules
parent0a6f50c0afdfc434b492493bd9efab20cbee8623 (diff)
rules: Fix by-path of mmc RPMB partitions and don't blkid them
Linux 3.10+ exposes RPMB (Replay Protected Memory Block) partitions of MMC devices [1] ; trying to read them with blkid or other unspecific means will cause kernel buffer I/O errors and timeouts. So don't run blkid on these. Also ensure that /dev/disk/by-path creates proper symlinks and exposes the -rpmb partition separately, instead of letting the "normal" partition symlink point to the rpbm device (this is a race condition). [1] http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=090d25fe224c0 https://launchpad.net/bugs/1333140
Diffstat (limited to 'rules')
-rw-r--r--rules/60-persistent-storage.rules6
1 files changed, 5 insertions, 1 deletions
diff --git a/rules/60-persistent-storage.rules b/rules/60-persistent-storage.rules
index 475b151535..08ed1ccf74 100644
--- a/rules/60-persistent-storage.rules
+++ b/rules/60-persistent-storage.rules
@@ -53,7 +53,8 @@ KERNEL=="mspblk[0-9]p[0-9]", ENV{ID_NAME}=="?*", ENV{ID_SERIAL}=="?*", SYMLINK+=
# by-path (parent device path)
ENV{DEVTYPE}=="disk", DEVPATH!="*/virtual/*", IMPORT{builtin}="path_id"
-ENV{DEVTYPE}=="disk", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}"
+ENV{DEVTYPE}=="disk", ENV{ID_PATH}=="?*", KERNEL=="mmcblk[0-9]*rpmb", SYMLINK+="disk/by-path/$env{ID_PATH}-rpmb"
+ENV{DEVTYPE}=="disk", ENV{ID_PATH}=="?*", KERNEL!="mmcblk[0-9]*rpmb", SYMLINK+="disk/by-path/$env{ID_PATH}"
ENV{DEVTYPE}=="partition", ENV{ID_PATH}=="?*", SYMLINK+="disk/by-path/$env{ID_PATH}-part%n"
# skip unpartitioned removable media devices from drivers which do not send "change" events
@@ -66,6 +67,9 @@ KERNEL=="sr*", ENV{DISK_EJECT_REQUEST}!="?*", ENV{ID_CDROM_MEDIA_TRACK_COUNT_DAT
KERNEL=="sr*", ENV{DISK_EJECT_REQUEST}!="?*", ENV{ID_CDROM_MEDIA_TRACK_COUNT_DATA}=="?*", ENV{ID_CDROM_MEDIA_SESSION_LAST_OFFSET}=="", \
IMPORT{builtin}="blkid --noraid"
+# don't try to read Replay Protected Memory Block partitions
+KERNEL=="mmcblk[0-9]*rpmb", GOTO="persistent_storage_end"
+
# probe filesystem metadata of disks
KERNEL!="sr*", IMPORT{builtin}="blkid"