Your message dated Tue, 3 Mar 2026 12:41:03 +0100
with message-id <[email protected]>
and subject line Re: Bug#689605: multipath-tools: no default multipath.conf
has caused the Debian Bug report #689605,
regarding multipath-tools: blacklist Xen devices by default
to be marked as done.
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--
689605: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=689605
Debian Bug Tracking System
Contact [email protected] with problems
--- Begin Message ---
Package: multipath-tools
Version: 0.4.8+git0.761c66f-10
Severity: normal
Since the multipath-tools package includes no standard multipath.conf,
multipathd will grab any new block device. This can lead to surprising and hard
debug effects.
e.g. attaching a device in a XEN dom0 domain will render the device
inaccessible. This corrupts xen-utils-4.1 since xend will attach the boot
device locally for pygrub, but can't release it properly because multipathd has
it.
I suggest supplying at least a minimal multipath.conf that blacklists the most
dangerous devices by default.
-- Package-specific info:
Contents of /etc/multipath.conf:
blacklist
{
devnode "^xvd[0-9a-z]*"
}
-- System Information:
Debian Release: 6.0.1
APT prefers stable
APT policy: (990, 'stable'), (100, 'stable-updates'), (100, 'testing')
Architecture: amd64 (x86_64)
Kernel: Linux 3.2.0-0.bpo.3-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Versions of packages multipath-tools depends on:
ii initscripts 2.88dsf-32 scripts for initializing and shutt
ii kpartx 0.4.8+git0.761c66f-10 create device mappings for partiti
ii libaio1 0.3.107-7 Linux kernel AIO access library -
ii libc6 2.13-33 Embedded GNU C Library: Shared lib
ii libdevmapper1.02.1 2:1.02.74-4 Linux Kernel Device Mapper userspa
ii libncurses5 5.7+20100313-5 shared libraries for terminal hand
ii libreadline6 6.1-3 GNU readline and history libraries
ii lsb-base 3.2-23.2squeeze1 Linux Standard Base 3.2 init scrip
ii udev 164-3 /dev/ and hotplug management daemo
multipath-tools recommends no packages.
Versions of packages multipath-tools suggests:
pn multipath-tools-boot <none> (no description available)
-- no debconf information
--- End Message ---
--- Begin Message ---
Source: multipath-tools
Source-Version: 0.8.5-1
On Sat, Aug 11, 2018 at 04:51:22PM +0200, Chris Hofstaedtler wrote:
> The built-in defaults in current versions appear to be:
>
> blacklist {
> devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st|dcssblk)[0-9]"
> devnode "^(td|hd|vd)[a-z]"
> devnode "^cciss!c[0-9]d[0-9]*"
> ...
> }
Since upstream commit
https://github.com/opensvc/multipath-tools/commit/00d55a20e65e6807a4ab2e28c99a79673398c30a
the default list has changed to an inverse list, specifically
!^(sd[a-z]|dasd[a-z]|nvme[0-9]).
Thus the xvd* devices should be ignored by default now.
Chris
--- End Message ---
