Hi!
I was able to change location by adding
"OVS_RUNDIR=/run/openvswitch" into file /etc/default/openvswitch-switch
and changing all
"/var/run/openvswitch" to "/run/openvswitch" in all scripts I've found
inside folder /usr/share/openvswitch/scripts
I'm using Debian GNU/Linux 12 (bookworm), default packages.
Thank you for your help
On 27.06.2025 16:55, Ilya Maximets wrote:
On 6/27/25 3:11 PM,richman10000...@gmail.com wrote:
Hi!
Description
I have an issue with openvswitch on server.
few month ago had issue with server being inaccessible.
Probable cause:
After investigation I think found a reason for that.
folder /var is on the disk (HDD RAID)
folder /run is in memory(tmpfs)
symlink //var/run -> /run/
But openvswitch sockets are at location //var/run/
/
/lsof | grep "var/run"
ovsdb-ser 593 root 15u unix
0x00000000065cc4dd 0t0 12496 /var/run/openvswitch/db.sock
type=STREAM
ovsdb-ser 593 root 16u unix
0x00000000d853813b 0t0 12497
/var/run/openvswitch/ovsdb-server.593.ctl type=STREAM
ovsdb-ser 593 root 18u unix
0x000000004cba3d40 0t0 12544 /var/run/openvswitch/db.sock
type=STREAM
ovs-vswit 641 root 9u unix
0x000000007acb4cf4 0t0 16459
/var/run/openvswitch/ovs-vswitchd.641.ctl type=STREAM
ovs-vswit 641 root 48u unix
0x000000003b097565 0t0 25826
/var/run/openvswitch/ovs-inter.mgmt type=STREAM
ovs-vswit 641 root 49u unix
0x00000000a1bb850e 0t0 25827
/var/run/openvswitch/ovs-inter.snoop type=STREAM/
During heaving IO to disk folder /var becomes frozen. ls -l will not
return anything.
since /var contains "run" symlink this results in ovs daemons to fail
and virtual switch stops working.
Proposed solution:
the solution is to move all pid and sockets to folder */run *but is
seems this is hard-coded into ovs daemons.
I've tried to change in conf.db /"rundir","/var/run/openvswitch" /but ovs.
But if I remove //var/run symlink - /*OVS services will not start!
*
The rundir is defined at the build time. If you're building OVS yourself
you may specify --with-rundir=/run/openvswitch for the ./configure script
to override the default. If you're using already built binary, you should
be able to override the value by exporting OVS_RUNDIR=/run/openvswitch
before starting OVS. Note that all OVS programs will use the same defaults
and you'll need to export this variable before using any OVS utilities
like ovs-vsctl or ovs-appctl, otherwise they may have trouble finding the
right paths.
Best regards, Ilya Maximets.
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