Devuan bug report logs - #527
udev rule for btrfs is not built correctly (fwd)

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Package: eudev; Maintainer for eudev is Devuan Dev Team <>;

Reported by: Bodo Eggert <>

Date: Thu, 3 Dec 2020 22:03:01 UTC

Severity: normal

Found in version 3.2.7-6

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Report forwarded to, Devuan Dev Team <>:
bug#527; Package eudev. (Thu, 03 Dec 2020 22:03:01 GMT) (full text, mbox, link).

Acknowledgement sent to Bodo Eggert <>:
New bug report received and forwarded. Copy sent to Devuan Dev Team <>. (Thu, 03 Dec 2020 22:03:04 GMT) (full text, mbox, link).

Message #5 received at (full text, mbox, reply):

From: Bodo Eggert <>
Subject: udev rule for btrfs is not built correctly (fwd)
Date: Thu, 3 Dec 2020 22:51:39 +0100 (CET)
Package: eudev
Version: 3.2.7-6

This bug has been described here; too:

messages saying "Aug 27 16:30:50 MiniHTPC2 udevd[2291]: failed to execute 
'/usr/lib/udev/${exec_prefix}/bin/udevadm' '${exec_prefix}/bin/udevadm 
trigger -s block -p ID_BTRFS_READY=0': No such file or directory" do 
appear in dmesg log (similar on my system, except for the host name)
To fix, ${exec_prefix} needs to be set in the build scripts

I fixed it locally; until then, the config files were original.

Effective local patch:
--- /lib/udev/rules.d/64-btrfs.rules~   2019-02-09 13:22:24.000000000 +0100
+++ /lib/udev/rules.d/64-btrfs.rules    2020-11-16 15:02:07.720000000 +0100
@@ -11,6 +11,6 @@ IMPORT{builtin}="btrfs ready $devnode"
 # reconsider pending devices in case when multidevice volume awaits
-ENV{ID_BTRFS_READY}=="1", RUN+="${exec_prefix}/bin/udevadm trigger -s block -p ID_BTRFS_READY=0"
+ENV{ID_BTRFS_READY}=="1", RUN+="/bin/udevadm trigger -s block -p ID_BTRFS_READY=0"

Have a nice day; 
	Bodo Eggert

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