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man: document db_persist udev rules OPTION

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Fixes #1551
This commit is contained in:
Michal Sekletar 2019-01-21 23:05:46 +01:00 committed by Zbigniew Jędrzejewski-Szmek
parent 61a38e0265
commit 07d16cc098
1 changed files with 12 additions and 0 deletions
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12
man/udev.xml
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@ -566,6 +566,18 @@
<para>Disable the watching of a device node with inotify.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>db_persist</option></term>
<listitem>
<para>Set the flag (sticky bit) on the udev database entry
of the event device. Device properties are then kept in the
database even when
<command>udevadm info --cleanup-db</command> is called.
This option can be useful in certain cases
(e.g. Device Mapper devices) for persisting device state
on the transition from initramfs.</para>
</listitem>
</varlistentry>
</variablelist>
</listitem>
</varlistentry>