Displaying 20 results from an estimated 31 matches for "rwm".
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2017 Oct 18
2
Can we disable write to /sys/fs/cgroup tree inside container ?
...ll cgroups tree - from hardware node and from
all another containers on node.
[root-inside-lxc@tst1 ~]# for i in `ls
/sys/fs/cgroup/devices/machine.slice/machine-lxc*/devices.list`; do
echo $i; cat $i; done
/sys/fs/cgroup/devices/machine.slice/machine-lxc\x2d10297\x2dtst2.scope/devices.list
c 1:3 rwm
c 1:5 rwm
c 1:7 rwm
c 1:8 rwm
c 1:9 rwm
c 5:0 rwm
c 5:2 rwm
c 10:229 rwm
b 253:6 rw
c 136:* rwm
/sys/fs/cgroup/devices/machine.slice/machine-lxc\x2d9951\x2dtst1.scope/devices.list
c 1:3 rwm
c 1:5 rwm
c 1:7 rwm
c 1:8 rwm
c 1:9 rwm
c 5:0 rwm
c 5:2 rwm
c 10:229 rwm
b 253:7 rw
c 136:* rwm
Hardware nod...
2012 Nov 08
3
Failed to access console after launching LXC through libvirt
...me State
----------------------------------
14366 instance-00000078 running
virsh # console 14366
Connected to domain instance-00000078
Escape character is ^]
And it keeps stuck here.
Initially I thought it could be a cgroup device config issue, and tried to
"echo ?c 5:1 rwm'
>/cgroup/devices/libvirt/lxc/instance-00000078/devices.allow?, to add
/dev/console access right to the container. But it does not work, console
stilll not working.
Before the cgroup tweaking, devices.list are as follows
[root at localhost libvirt]# cat
/cgroup/devices/libvirt/lxc/instance...
2013 Apr 18
1
libvirt 1.0.3 Vs 1.0.4 / cgroup devices
...tty1 -> /dev/pts/0
crw-rw-rw-. 1 root root 1, 9 Apr 17 21:18 urandom
crw-rw-rw-. 1 root root 1, 5 Apr 17 21:18 zero
# rm -f /dev/random (successful)
# mknod random c 1 8
mknod: `random': Operation not permitted
Config on the host :
knowing that selinux is set to permissive and c 1:8 rwm is in the cgroup
devices list of the guest1
# cat /sys/fs/cgroup/devices/libvirt/lxc/guest1/devices.list
c 1:3 rwm
c 1:5 rwm
c 1:7 rwm
c 1:8 rwm
c 1:9 rwm
c 5:0 rwm
c 5:2 rwm
c 10:229 rwm
c 136:* rwm
is this a change that was introduced intentially on 1.0.4 ? if yes, how can
I make it work ?
ple...
2012 Jan 25
2
How to change libvirt / cgroup interaction?
Hi there,
Do you know if there is a way to modify how libvirt interacts with the
cgroup?
Because, I successfully add the /dev/net/tun support in my LXC container
by doing:
echo c 10:200 rwm >> /cgroup/libvirt/lxc/instance-00000005/devices.allow
But when I restart the instance/LXC container, this option has gone.
How can I make this persistant? Is there a configuration file?
Thanks for your answers.
Best regards.
Sam
2011 Jun 08
5
LXC and Dahdi
Howdy,
I am playing around with asterisk within an LXC container on Ubuntu 11.04.
I have asterisk (1.4.42) running fine, but want access to dahdi_dummy for
timing (meetme). I have dahdi installed on the "host", and dahdi_dummy is
loaded:
root at astnorth:/# ls -ltr /dev/dahdi
total 0
crw-rw---- 1 root root 196, 250 2011-06-08 13:59 transcode
crw-rw---- 1 root root 196, 253
2017 Sep 21
1
How automatically set group.devices.allow for libvirt-lxc container after start ?
...<capabilities policy='default'>
<mknod state='on'/>
</capabilities>
</features>
2) start container
3) attach or ssh container, be root:
#mknod /dev/ppp c 108 0
4) inside container (or from hardware node, no difference) run:
# echo "c 108:0 rwm" >
/sys/fs/cgroup/devices/machine.slice/machine-lxc\\x2d${PID}\\x2d${CONTAINER_NAEM}scope/devices.allow
5) Now pppd work inside lxc:
#pppd call reuters debug nodetach
using channel 1
Using interface ppp0
Connect: ppp0 <--> /dev/pts/2
sent [LCP ConfReq id=0x1 <mru 1000> <asyn...
2011 Jan 17
2
ping_pong using o2cb and cman
I was testing ocfs2 on a 2 node cluster set up.
ocfs2-tools version is 1.6.3
ocfs2 kernel version is 2.6.36
Using cman on 2 nodes
node02 dw # ping_pong -rwm /data/test.dat 3
data increment = 2
14 locks/sec
node01 dw # ping_pong -rw /data/test.dat 3
data increment = 2
10 locks/sec
node02 dw # ping_pong -r /data/test.dat 3
1980 locks/sec
Using cman on 1 node
node02 dw # ping_pong -rwm /data/test.dat 3
data increment = 1
3165 locks...
2013 May 30
2
Re: libguestfs-1.22.1 compilation error
Yes i am using ArchLinux (what else is there ?)
and i hate/love (mixed feelings) when you have a valid point and give
such pointers!
indeed there is a diff between your perl and mine
[tmp]> diff -u rwm perl
--- rwm 2013-05-30 13:24:21.066286908 +0300
+++ perl 2013-05-30 13:26:27.149615793 +0300
@@ -1,14 +1,14 @@
- if ($t =~ /\G([^\n]{0,$ll})($break|\n+|\z)/xmgc) {
+ if ($t =~ /\G((?:(?=[^\n])\X){0,$ll})($break|\n+|\z)/xmgc) {
$r .= $unexpand...
2009 Jun 22
5
Convert "ragged" list to matrix
Hi,
I have a list made up of character strings with each item a different
length (each item is between 1and 6 strings long). Is there a way to
convert a "ragged" list to a matrix such that each item is its own row?
Here is a simple example:
a=list();
a[[1]] = c("a", "b", "c");
a[[2]] = c("d", "e");
a[[3]] = c("f",
2013 Jul 06
2
Permission problem with /dev/net/tun
...ed from precise and then upgraded. The guest is
Ubuntu precise; however, I see the same symptom in another raring
container on the same host.
What I tried to resolve this:
1) On the host, I echoed various stuff to the cgroup device files:
cd /sys/fs/cgroup/devices/libvirt/lxc
echo "c 10:200 rwm" > devices.allow
echo "c 10:200 rwm" > depot/devices.allow
echo a > depot/devices.allow
... and I see the successful results in depot/devices.list, but no
success.
2) I inserted a line "/dev/net/tun rwk," into
/etc/apparmor.d/abstractions/lxc/container-base - no...
2012 Nov 05
1
using fuse with libguestfs
Upon seeing RWM Jones article "Using mount-local API from C" I became
curious because I thought there WAS a way to combine aspects of FUSE
with the tools provided by libguestfs. So if I wanted to create my own
filesystem using callbacks placed in the 'fuse_operations' struct
(parameter to 'fu...
2013 May 30
0
Re: libguestfs-1.22.1 compilation error
On Thu, May 30, 2013 at 01:37:34PM +0300, Evaggelos Balaskas wrote:
> [tmp]> diff -u rwm perl
> --- rwm 2013-05-30 13:24:21.066286908 +0300
> +++ perl 2013-05-30 13:26:27.149615793 +0300
> @@ -1,14 +1,14 @@
> - if ($t =~ /\G([^\n]{0,$ll})($break|\n+|\z)/xmgc) {
> + if ($t =~ /\G((?:(?=[^\n])\X){0,$ll})($break|\n+|\z)/xmgc) {
> $r ....
2014 Feb 25
2
libvirt lxc /dev/null
...r on F19 with virt-manager and it starts OK. The only
problem is that sshd does not run complaining "/dev/null is not a character
device".
# ls -l /dev/null
-rw-r--r-- 1 root root 0 2014-02-25 22:39 /dev/null
/sys/fs/cgroup/devices/machine/VM_NAME.libvirt-lxc/devices.list has "c 1:3
rwm" line, but I cannot create /dev/null:
# mknod /dev/nulll c 1 3
mknod: `/dev/nulll': Operation not permitted
Thanks,
Nerijus
2013 Jul 08
0
Re: Permission problem with /dev/net/tun
...is
> Ubuntu precise; however, I see the same symptom in another raring
> container on the same host.
>
> What I tried to resolve this:
>
> 1) On the host, I echoed various stuff to the cgroup device files:
>
> cd /sys/fs/cgroup/devices/libvirt/lxc
> echo "c 10:200 rwm" > devices.allow
> echo "c 10:200 rwm" > depot/devices.allow
> echo a > depot/devices.allow
>
> ... and I see the successful results in depot/devices.list, but no
> success.
>
> 2) I inserted a line "/dev/net/tun rwk," into
> /etc/apparmor...
2013 May 30
2
libguestfs-1.22.1 compilation error
myconf
./configure \
PYTHON=/usr/bin/python2 \
--prefix=/usr --libdir=/usr/lib \
--mandir=/usr/share/man \
--sysconfdir=/etc \
--disable-probes \
--disable-gobject \
--enable-introspection=no \
--disable-lua \
--disable-erlang \
--disable-php \
--disable-haskell \
--disable-ruby \
2013 Jan 23
4
Organization of Users in Samba4
Hello,
I am working on migrating from OpenLDAP using the inetOrgPerson schema to Samba4. I would like to continue to provide backwards compatibility with our existing authentication service. In OpenLDAP, users are all contained inside the People organizational unit and referenced by uid, for example:
dn: uid=myuser,ou=People,dc=example,dc=com
When using samba-tool to add a user, it places the
2012 Jan 24
0
Question about libvirt / LXC
Hi there,
I have a small simple question about libvirt and LXC containers. I know
how to activate /dev/net/tun in an LXC container:
#tun
lxc.cgroup.devices.allow = c 10:200 rwm
in the LXC config file.
But, how to do that in a libvirt XML file? I just need to activate the
/dev/net/tun device in an LXC container using libvirt.
Thanks for your answers!
Best regards.
Sam
2014 Feb 26
0
Re: libvirt lxc /dev/null
...tarts OK. The only
> problem is that sshd does not run complaining "/dev/null is not a character
> device".
> # ls -l /dev/null
> -rw-r--r-- 1 root root 0 2014-02-25 22:39 /dev/null
>
> /sys/fs/cgroup/devices/machine/VM_NAME.libvirt-lxc/devices.list has "c 1:3
> rwm" line, but I cannot create /dev/null:
> # mknod /dev/nulll c 1 3
> mknod: `/dev/nulll': Operation not permitted
Libvirt will pre-populate the /dev filesystem with any permitted
devices, creation is denied by cgroups.
That you have a plain file for /dev/null suggests something in
yo...
2014 Mar 06
1
Fail to convert LXC container configuration into a domain XML fragment
...late
it?
PS:
I care about the rules in my LXC container configuration file, such as:
*lxc.aa_profile = unconfined*
*lxc.cgroup.devices.deny = a*
*# Allow any mknod (but not using the node)*
*lxc.cgroup.devices.allow = c *:* m*
*lxc.cgroup.devices.allow = b *:* m*
*lxc.cgroup.devices.allow = b 7:* rwm*
I just don't know how to express the rules above using xml format. Please
help! Thanks!
--
Best Regards,
Du Jun
2014 Oct 20
0
Libvirt with containers
...I am trying to define a container using libvirt, and I need to allow access of the device /dev/uio0 on the host on the container as well. That is, I have the following line in the container config file:
lxc.mount.entry = /dev/uio0 dev/uio0 none bind,create=file
lxc.cgroup.devices.allow = c 249:1 rwm
And I want to add it in the libvirt XML file for the container.
I tried something like:
<filesystem accessmode="passthrough" type="mount">
<source file="/dev/uio0" />
<target dir="/dev/uio0" />
</filesystem>
But...