[mdadm/f15] mdadm: fix udev incremental assembly rules file
Doug Ledford
dledford at fedoraproject.org
Thu Aug 25 19:37:34 UTC 2011
commit fde9b1807d7e7cfcb2697981a297f96c81e20df5
Author: Doug Ledford <dledford at redhat.com>
Date: Thu Aug 25 15:24:06 2011 -0400
mdadm: fix udev incremental assembly rules file
Added support for nested md devices, md on top of LVM devices such as
encrypted partitions (although I don't recommend that, I recommend
encrypting the md device instead), and support for md devices on top
of multipath dm devices.
Signed-off-by: Doug Ledford <dledford at redhat.com>
(cherry picked from commit 6ffc771fa2630eda55e6c256fffbd01b0c23438d)
Signed-off-by: Doug Ledford <dledford at redhat.com>
mdadm.rules | 48 ++++++++++++++++++++++++++++++++++++++++++------
mdadm.spec | 8 +++++++-
2 files changed, 49 insertions(+), 7 deletions(-)
---
diff --git a/mdadm.rules b/mdadm.rules
index ddd9e67..46cd926 100644
--- a/mdadm.rules
+++ b/mdadm.rules
@@ -2,16 +2,57 @@
# automatically cause mdadm to be run.
# See udev(8) for syntax
+# Don't process any events if anaconda is running as anaconda brings up
+# raid devices manually
ENV{ANACONDA}=="?*", GOTO="md_imsm_inc_end"
+
+# Also don't process disks that are slated to be a multipath device
+ENV{DM_MULTIPATH_DEVICE_PATH}=="?*", GOTO="md_imsm_inc_end"
+
+# We process add events on block devices (since they are ready as soon as
+# they are added to the system), but we must process change events as well
+# on any dm devices (like LUKS partitions or LVM logical volumes) and on
+# md devices because both of these first get added, then get brought live
+# and trigger a change event. The reason we don't process change events
+# on bare hard disks is because if you stop all arrays on a disk, then
+# run fdisk on the disk to change the partitions, when fdisk exits it
+# triggers a change event, and we want to wait until all the fdisks on
+# all member disks are done before we do anything. Unfortunately, we have
+# no way of knowing that, so we just have to let those arrays be brought
+# up manually after fdisk has been run on all of the disks.
+
+# First, process all add events (md and dm devices will not really do
+# anything here, just regular disks, and this also won't get any imsm
+# array members either)
SUBSYSTEM=="block", ACTION=="add", ENV{ID_FS_TYPE}=="linux_raid_member", \
RUN+="/sbin/mdadm -I $env{DEVNAME}"
SUBSYSTEM=="block", ACTION=="remove", ENV{ID_FS_TYPE}=="linux_raid_member", \
RUN+="/sbin/mdadm -If $name --path $env{ID_PATH}"
+# Next, check to make sure the BIOS raid stuff wasn't turned off via cmdline
IMPORT{cmdline}="noiswmd"
IMPORT{cmdline}="nodmraid"
ENV{noiswmd}=="?*", GOTO="md_imsm_inc_end"
ENV{nodmraid}=="?*", GOTO="md_imsm_inc_end"
+SUBSYSTEM=="block", ACTION=="add", ENV{ID_FS_TYPE}=="isw_raid_member", \
+ RUN+="/sbin/mdadm -I $env{DEVNAME}"
+SUBSYSTEM=="block", ACTION=="remove", ENV{ID_FS_TYPE}=="isw_raid_member", \
+ RUN+="/sbin/mdadm -If $name --path $env{ID_PATH}"
+LABEL="md_imsm_inc_end"
+
+# Next make sure that this isn't a dm device we should skip for some reason
+ENV{DM_UDEV_RULES_VSN}!="?*", GOTO="dm_change_end"
+ENV{DM_UDEV_DISABLE_DISK_RULES_FLAG}=="1", GOTO="dm_change_end"
+ENV{DM_SUSPENDED}=="1", GOTO="dm_change_end"
+KERNEL=="dm-*", SUBSYSTEM=="block", ENV{ID_FS_TYPE}=="linux_raid_member", \
+ ACTION=="change", RUN+="/sbin/mdadm -I $env{DEVNAME}"
+LABEL="dm_change_end"
+
+# Finally catch any nested md raid arrays. If we brought up an md raid
+# array that's part of another md raid array, it won't be ready to be used
+# until the change event that occurs when it becomes live
+KERNEL=="md*", SUBSYSTEM=="block", ENV{ID_FS_TYPE}=="linux_raid_member", \
+ ACTION=="change", RUN+="/sbin/mdadm -I $env{DEVNAME}"
# In case the initramfs only started some of the arrays in our container,
# run incremental assembly on the container itself. Note: we ran mdadm
@@ -20,12 +61,7 @@ ENV{nodmraid}=="?*", GOTO="md_imsm_inc_end"
# file, we will need to add this line into the middle of the next rule:
# IMPORT{program}="/sbin/mdadm -D --export $tempnode", \
-SUBSYSTEM=="block", ACTION=="add", KERNEL=="md*", \
+SUBSYSTEM=="block", ACTION=="add|change", KERNEL=="md*", \
ENV{MD_LEVEL}=="container", RUN+="/sbin/mdadm -I $env{DEVNAME}"
-SUBSYSTEM=="block", ACTION=="add", ENV{ID_FS_TYPE}=="isw_raid_member", \
- RUN+="/sbin/mdadm -I $env{DEVNAME}"
-SUBSYSTEM=="block", ACTION=="remove", ENV{ID_FS_TYPE}=="isw_raid_member", \
- RUN+="/sbin/mdadm -If $name --path $env{ID_PATH}"
-LABEL="md_imsm_inc_end"
diff --git a/mdadm.spec b/mdadm.spec
index 55b995c..e4995ff 100644
--- a/mdadm.spec
+++ b/mdadm.spec
@@ -1,7 +1,7 @@
Summary: The mdadm program controls Linux md devices (software RAID arrays)
Name: mdadm
Version: 3.2.2
-Release: 7%{?dist}
+Release: 8%{?dist}
Source: http://www.kernel.org/pub/linux/utils/raid/mdadm/mdadm-%{version}.tar.bz2
Source1: mdmonitor.init
Source2: raid-check
@@ -98,6 +98,12 @@ fi
%config(noreplace) %{_sysconfdir}/tmpfiles.d/%{name}.conf
%changelog
+* Thu Aug 25 2011 Doug Ledford <dledford at redhat.com> - 3.2.2-8
+- Rework the 65-md-incremental.rules file to add the following support:
+ Nested md raid arrays should now work
+ MD on top of LUKS or other lvm based devices should now work
+ We should no longer grab multipath paths before multipath can
+
* Wed Jul 27 2011 Doug Ledford <dledford at redhat.com> - 3.2.2-7
- Fix a bug with readding a device
- Fix a bug with writemostly flag handling
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