Re: [Lxc-users] /proc/stat
On Wed, Jan 5, 2011 at 9:33 PM, Sergio Daniel Troiano sergio.troi...@elserver.com wrote: Anthony, I need to know the state (waiting i/o ,running or runnable) of every porcess within each container. what you told me only shows PID's created within the container . May be i haven't explained clearly. or maybe i just glazed it too quickly :-) I know i can see that watching the file /proc/stat but it is a global state. I need to watch the field called procs_running separated for each container. i'm not sure off-hand as i haven't actually used LXC in some time, but everything useful will be in the cgroup hierarchy; /proc is not containerized, AFAIK... indefinitely. if the cgroup you've mounted includes all of the `modules` (i forget the actual term), you will have many pseudo files to use, and one or a combination of them likely has the information you seek. sorry i can't be more specific, but everything you can use will be in cgroup; you'll have to forget about /proc :-( though you may also consider putting each process into it's own cgroup... just depends of whether that makes sense in you're use case. C Anthony -- Learn how Oracle Real Application Clusters (RAC) One Node allows customers to consolidate database storage, standardize their database environment, and, should the need arise, upgrade to a full multi-node Oracle RAC database without downtime or disruption http://p.sf.net/sfu/oracle-sfdevnl ___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
Re: [Lxc-users] rootfs backup
On Thu, Jan 6, 2011 at 12:02 PM, Noah Campbell noahcampb...@gmail.com wrote: With my limited knowledge of lxc, I would recommend looking at a filesystem that supports snapshots. yes, in the past i've used btrfs for this (.32 kernel). some will say that it's not suitable for use (and in some situations it may not be), but imo, it's stable enough for my uses; i've had a server running since .32 was released (2 yrs?) hosting several btrfs-based containers without any issue... and btrfs was only considered ready for early adopters at that point. using a couple of template subvolumes, i was able to snapshot them into usable domains in 1 second, and create backups just as fast, while at the same time reusing blocks and saving enormous amounts of disk space. works like a treat :-) i plan on using it extensively very soon for an updated KVM+LXC server using libvirt. C Anthony psdepending on how... bold... you are, there are LZO compression patches queued for .38: http://www.spinics.net/lists/linux-btrfs/msg07748.html and some dedup work is basic but workable: http://www.spinics.net/lists/linux-btrfs/msg07819.html http://www.spinics.net/lists/linux-btrfs/msg07820.html both will be very useful for containerized environments. -- Learn how Oracle Real Application Clusters (RAC) One Node allows customers to consolidate database storage, standardize their database environment, and, should the need arise, upgrade to a full multi-node Oracle RAC database without downtime or disruption http://p.sf.net/sfu/oracle-sfdevnl ___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
Re: [Lxc-users] poor performance between host and container
On 01/05/2011 10:45 AM, Daniel Lezcano wrote: AFAIR, the mtu should fit the mtu of the bridge. Let us know if http://comments.gmane.org/gmane.linux.kernel.containers.lxc.general/663 fixed your problem. MTU was fine but this helped: /usr/sbin/ethtool -K br0 sg off /usr/sbin/ethtool -K br0 tso off Thank you, tamas -- Learn how Oracle Real Application Clusters (RAC) One Node allows customers to consolidate database storage, standardize their database environment, and, should the need arise, upgrade to a full multi-node Oracle RAC database without downtime or disruption http://p.sf.net/sfu/oracle-sfdevnl ___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
[Lxc-users] lxc-execute: Input/output error - failed to read
Hi there,
This is what happens on a freshly installed Ubuntu 10.10 Maverick
Meerkat (2.6.35):
# lxc-version
lxc version: 0.7.2
# mkdir /lxc
# /usr/lib/lxc/templates/lxc-ubuntu -p /lxc
.
I: Retrieving tar
I: Validating tar
I: Retrieving tzdata
I: Validating tzdata
I: Retrieving udev
.
Please change root-password !
# ls
config fstab rootfs
# cat config
lxc.utsname = xxx
lxc.tty = 4
lxc.pts = 1024
lxc.rootfs = /lxc/rootfs
lxc.mount = /lxc/fstab
lxc.cgroup.devices.deny = a
# /dev/null and zero
lxc.cgroup.devices.allow = c 1:3 rwm
lxc.cgroup.devices.allow = c 1:5 rwm
# consoles
lxc.cgroup.devices.allow = c 5:1 rwm
lxc.cgroup.devices.allow = c 5:0 rwm
lxc.cgroup.devices.allow = c 4:0 rwm
lxc.cgroup.devices.allow = c 4:1 rwm
# /dev/{,u}random
lxc.cgroup.devices.allow = c 1:9 rwm
lxc.cgroup.devices.allow = c 1:8 rwm
lxc.cgroup.devices.allow = c 136:* rwm
lxc.cgroup.devices.allow = c 5:2 rwm
# rtc
lxc.cgroup.devices.allow = c 254:0 rwm
# cat fstab
proc/lxc/rootfs/proc procnodev,noexec,nosuid 0 0
devpts /lxc/rootfs/dev/pts devpts defaults 0 0
sysfs /lxc/rootfs/sys sysfs defaults 0 0
All was perfect so far.
Now, this is the place where things become less beautiful:
# lxc-execute -n xxx -f config /bin/bash
r...@xxx:/# lxc-execute: Input/output error - failed to read
r...@xxx:/# r...@xxx:/# exit
[2]+ Stopped lxc-execute -n xxx -f config /bin/bash
# fg
lxc-execute -n xxx -f config /bin/bash
#
Note it somehow manages to send itself to background.
lxc-start simply hangs. When /sbin/init is started with --verbose it
says somewhere in the middle:
init: mountall main process (3) executable changed
init: hostname main process (4) terminated with status 1
init: hostname goal changed from start to stop
Now, what's interesting, if I comment out the lxc.rootfs line in config,
it gives me perfectly functional bash:
# lxc-execute -n xxx -f config /bin/bash
r...@xxx:/lxc# pwd
/lxc
r...@xxx:/lxc# ps ax
PID TTY STAT TIME COMMAND
1 ?S 0:00 /usr/lib/lxc/lxc-init -- /bin/bash
2 ?S 0:00 /bin/bash
12 ?R+ 0:00 ps ax
r...@xxx:/lxc#
Even more interesting: if I add a line like lxc.rootfs = / to the
config file (/ is the default value, right?) it breaks again:
# lxc-execute -n xxx -f config /bin/bash
r...@xxx:/# lxc-execute: Input/output error - failed to read
So my question is what I'm doing wrong? If that's not me, is it
something fixed in 0.7.3?
Thanks,
Mike
--
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Re: [Lxc-users] lxc-execute: Input/output error - failed to read
On 11-01-06 6:02 PM, Mike Ivanov wrote: # lxc-execute -n xxx -f config /bin/bash r...@xxx:/# lxc-execute: Input/output error - failed to read BTW, exactly the same happens to containers created with the lxc-sshd template. Mike -- Gaining the trust of online customers is vital for the success of any company that requires sensitive data to be transmitted over the Web. Learn how to best implement a security strategy that keeps consumers' information secure and instills the confidence they need to proceed with transactions. http://p.sf.net/sfu/oracle-sfdevnl ___ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
