* [PATCH] Udev integration: udev rules 2/3
@ 2009-04-08 12:35 Peter Rajnoha
2009-04-15 18:12 ` Alasdair G Kergon
0 siblings, 1 reply; 4+ messages in thread
From: Peter Rajnoha @ 2009-04-08 12:35 UTC (permalink / raw)
To: lvm-devel
This one is for LVM -- to create symlinks under /dev directory.
That's all :)
# udev rules for LVM
# This will create LVM symlinks in /dev directory.
SUBSYSTEM!="block", GOTO="lvm_end"
KERNEL!="dm-[0-9]*", GOTO="lvm_end"
ACTION!="change|remove", GOTO="lvm_end"
ACTION=="change", IMPORT{PROGRAM}="/sbin/dmsetup info -j %M -m %m -c --nameprefixes --noheadings --rows -o name,uuid,subsystem,vg_name,lv_name,lv_layer"
ENV{DM_UUID}!="LVM-?*", GOTO="lvm_end"
# Do not create symlinks for hidden subdevices.
ENV{DM_LV_NAME}=="?*_mlog", GOTO="notify"
ENV{DM_LV_NAME}=="?*_mimage_[0-9]*", GOTO="notify"
# Create symlinks for top level devices only.
ENV{DM_VG_NAME}=="?*", ENV{DM_LV_NAME}=="?*", ENV{DM_LV_LAYER}!="?*", SYMLINK+="$env{DM_VG_NAME}/$env{DM_LV_NAME}"
LABEL="notify", ENV{COOKIE}=="[0-9]*", RUN+="/sbin/dmsetup notify $env{COOKIE}", OPTIONS+="last_rule"
LABEL="lvm_end"
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH] Udev integration: udev rules 2/3
2009-04-08 12:35 [PATCH] Udev integration: udev rules 2/3 Peter Rajnoha
@ 2009-04-15 18:12 ` Alasdair G Kergon
2009-04-20 10:07 ` Peter Rajnoha
2009-04-20 10:15 ` Peter Rajnoha
0 siblings, 2 replies; 4+ messages in thread
From: Alasdair G Kergon @ 2009-04-15 18:12 UTC (permalink / raw)
To: lvm-devel
On Wed, Apr 08, 2009 at 02:35:35PM +0200, Peter Rajnoha wrote:
> # udev rules for LVM
> # This will create LVM symlinks in /dev directory.
Again, describe in more detail what the script is doing.
Needs (C) notices too.
> SUBSYSTEM!="block", GOTO="lvm_end"
> KERNEL!="dm-[0-9]*", GOTO="lvm_end"
> ACTION!="change|remove", GOTO="lvm_end"
>
> ACTION=="change", IMPORT{PROGRAM}="/sbin/dmsetup info -j %M -m %m -c --nameprefixes --noheadings --rows -o name,uuid,subsystem,vg_name,lv_name,lv_layer"
If we already have the name (e.g. from sysfs), I think we talked about adding
a 'split up this name' command to dmsetup which does not perform any ioctls.
> ENV{DM_UUID}!="LVM-?*", GOTO="lvm_end"
Seems to be some repetition here. Does udev support including files inline
within other files?
> # Do not create symlinks for hidden subdevices.
> ENV{DM_LV_NAME}=="?*_mlog", GOTO="notify"
> ENV{DM_LV_NAME}=="?*_mimage_[0-9]*", GOTO="notify"
I think the rule was based on lv_layer: if it exists, don't create symlink, otherwise do.
- Don't think mirrors need to be singled out, do they?
Alasdair
--
agk at redhat.com
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH] Udev integration: udev rules 2/3
2009-04-15 18:12 ` Alasdair G Kergon
@ 2009-04-20 10:07 ` Peter Rajnoha
2009-04-20 10:15 ` Peter Rajnoha
1 sibling, 0 replies; 4+ messages in thread
From: Peter Rajnoha @ 2009-04-20 10:07 UTC (permalink / raw)
To: lvm-devel
On 04/15/2009 08:12 PM, Alasdair G Kergon wrote:
> On Wed, Apr 08, 2009 at 02:35:35PM +0200, Peter Rajnoha wrote:
>> # udev rules for LVM
>> # This will create LVM symlinks in /dev directory.
>
> Again, describe in more detail what the script is doing.
> Needs (C) notices too.
ok, I'll add that...
>> SUBSYSTEM!="block", GOTO="lvm_end"
>> KERNEL!="dm-[0-9]*", GOTO="lvm_end"
>> ACTION!="change|remove", GOTO="lvm_end"
>>
>> ACTION=="change", IMPORT{PROGRAM}="/sbin/dmsetup info -j %M -m %m -c --nameprefixes --noheadings --rows -o name,uuid,subsystem,vg_name,lv_name,lv_layer"
>
> If we already have the name (e.g. from sysfs), I think we talked about adding
> a 'split up this name' command to dmsetup which does not perform any ioctls.
>
>> ENV{DM_UUID}!="LVM-?*", GOTO="lvm_end"
>
> Seems to be some repetition here. Does udev support including files inline
> within other files?
Unfortunately not (or I haven't found it documented). The only thing we can do
about including files is IMPORT{FILE} rule, but this is restricted to KEY=VALUE
pairs only...
Peter
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH] Udev integration: udev rules 2/3
2009-04-15 18:12 ` Alasdair G Kergon
2009-04-20 10:07 ` Peter Rajnoha
@ 2009-04-20 10:15 ` Peter Rajnoha
1 sibling, 0 replies; 4+ messages in thread
From: Peter Rajnoha @ 2009-04-20 10:15 UTC (permalink / raw)
To: lvm-devel
On 04/15/2009 08:12 PM, Alasdair G Kergon wrote:
> On Wed, Apr 08, 2009 at 02:35:35PM +0200, Peter Rajnoha wrote:
>> ENV{DM_UUID}!="LVM-?*", GOTO="lvm_end"
>
> Seems to be some repetition here. Does udev support including files inline
> within other files?
This just reminds me one thing -- we don't have to assign DM_UUID and DM_NAME
vars in the rules following the basic DM udev rules. Once it's assigned,
it's set in the other rules as well, so we can save a little with this,
no need to read it again.
Peter
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2009-04-20 10:15 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2009-04-08 12:35 [PATCH] Udev integration: udev rules 2/3 Peter Rajnoha
2009-04-15 18:12 ` Alasdair G Kergon
2009-04-20 10:07 ` Peter Rajnoha
2009-04-20 10:15 ` Peter Rajnoha
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