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- udev: use device mapper target name for btrfs device ready (bnc#888215).

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- Add udev-use-device-mapper-target-name-for-btrfs-device-ready.patch

- udev: use device mapper target name for btrfs device ready (bnc#888215).
- Add udev-use-device-mapper-target-name-for-btrfs-device-ready.patch

OBS-URL: https://build.opensuse.org/package/show/Base:System/systemd?expand=0&rev=743
This commit is contained in:
Dr. Werner Fink 2014-07-31 06:53:04 +00:00 committed by Git OBS Bridge
parent 958072d5cd
commit a3474351cb
5 changed files with 61 additions and 0 deletions
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6
systemd-mini.changes
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@ -1,3 +1,9 @@
-------------------------------------------------------------------
Wed Jul 30 21:10:32 UTC 2014 - jeffm@suse.com
- udev: use device mapper target name for btrfs device ready (bnc#888215).
- Add udev-use-device-mapper-target-name-for-btrfs-device-ready.patch
-------------------------------------------------------------------
Wed Jul 30 12:53:07 UTC 2014 - werner@suse.de

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systemd-mini.spec
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@ -884,6 +884,8 @@ Patch1057: 1057-udev-unify-event-timeout-handling.patch
Patch1058: 1058-udev-unify-event-timeout-handling.patch
# PATCH-FIX-UPSTREAM 1059-udev-fixup-commit-dd5eddd28a74a49607a8fffcaf960040db.patch
Patch1059: 1059-udev-fixup-commit-dd5eddd28a74a49607a8fffcaf960040db.patch
# PATCH-FIX-SUSE udev-use-device-mapper-target-name-for-btrfs-device-ready.patch
Patch1060: udev-use-device-mapper-target-name-for-btrfs-device-ready.patch
%description
Systemd is a system and service manager, compatible with SysV and LSB
@ -1491,6 +1493,7 @@ cp %{SOURCE7} m4/
%patch1058 -p0
%endif
%patch1059 -p0
%patch1060 -p1
# ensure generate files are removed
rm -f units/emergency.service

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systemd.changes
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@ -1,3 +1,9 @@
-------------------------------------------------------------------
Wed Jul 30 21:10:21 UTC 2014 - jeffm@suse.com
- udev: use device mapper target name for btrfs device ready (bnc#888215).
- Add udev-use-device-mapper-target-name-for-btrfs-device-ready.patch
-------------------------------------------------------------------
Wed Jul 30 12:53:07 UTC 2014 - werner@suse.de

3
systemd.spec
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@ -879,6 +879,8 @@ Patch1057: 1057-udev-unify-event-timeout-handling.patch
Patch1058: 1058-udev-unify-event-timeout-handling.patch
# PATCH-FIX-UPSTREAM 1059-udev-fixup-commit-dd5eddd28a74a49607a8fffcaf960040db.patch
Patch1059: 1059-udev-fixup-commit-dd5eddd28a74a49607a8fffcaf960040db.patch
# PATCH-FIX-SUSE udev-use-device-mapper-target-name-for-btrfs-device-ready.patch
Patch1060: udev-use-device-mapper-target-name-for-btrfs-device-ready.patch
%description
Systemd is a system and service manager, compatible with SysV and LSB
@ -1486,6 +1488,7 @@ cp %{SOURCE7} m4/
%patch1058 -p0
%endif
%patch1059 -p0
%patch1060 -p1
# ensure generate files are removed
rm -f units/emergency.service

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udev-use-device-mapper-target-name-for-btrfs-device-ready.patch Normal file
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@ -0,0 +1,43 @@
From: Jeff Mahoney <jeffm@suse.com>
Subject: udev: use device mapper target name for btrfs device ready
References: bnc#888215
When udev gets a change event for a block device, it calls the builtin
btrfs helper to scan it for a btrfs file system. If the file system was
mounted using a device mapper node, mount(8) will have looked up the
device mapper table and used the /dev/mapper/<name> node for mount.
If something like partprobe runs, and then causes change events to be
handled, the btrfs ready event is handled using /dev/dm-N instead of
the device mapper named node. Btrfs caches the last name passed to
the scanning ioctl and uses that to report the device name for
things like /proc/mounts.
So, after running partprobe we go from:
/dev/mapper/test-test on /mnt type btrfs (rw,relatime,space_cache)
... to ...
/dev/dm-0 on /mnt type btrfs (rw,relatime,space_cache)
This doesn't apply only to LVM device, but multipath as well.
If the device is a DM device, udev will have already cached the table name
from sysfs and we can use that to pass /dev/mapper/<name> to the builtin
so that the correct name is used.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
---
rules/64-btrfs.rules | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/rules/64-btrfs.rules
+++ b/rules/64-btrfs.rules
@@ -6,7 +6,8 @@ ENV{ID_FS_TYPE}!="btrfs", GOTO="btrfs_en
ENV{SYSTEMD_READY}=="0", GOTO="btrfs_end"
# let the kernel know about this btrfs filesystem, and check if it is complete
-IMPORT{builtin}="btrfs ready $devnode"
+ENV{DM_NAME}=="", IMPORT{builtin}="btrfs ready $devnode"
+ENV{DM_NAME}=="?*", IMPORT{builtin}="btrfs ready /dev/mapper/$env{DM_NAME}"
# mark the device as not ready to be used by the system
ENV{ID_BTRFS_READY}=="0", ENV{SYSTEMD_READY}="0"