oxenstored is an ocaml implementation of the xenstore daemon. It is faster,
more scalable and more reliable than the C xenstored.
In particular the transaction model in oxenstored does not involve taking a
complete copy of the database and aborting on any (even non-conflicting) other
change.
There is a paper on the design and implementation of oxenstored at
http://gazagnaire.org/pub/GH09.pdf which includes a performance evaluation and
comparison with the C daemon etc.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
There is currently no code in the kernel to trigger autoload of the
evtchn or gntdev drivers. Load them manually during xencommons start.
Handle both pvops and xenlinux module names.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Currently xencommons prints an error that /proc/xen/capabilities does
not exist when started on a non-xen kernel.
Update the xencommons script to run only when needed:
- do not run if /proc/xen does not exist
- check if /proc/xen/capabilities exists before doing the grep for dom0
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
We need to cope with 0 or more '0' prefixed to '$dev':
# stat -c '%D' "/system.img"
13
# losetup -a
/dev/loop0: [0013]:12062248 (/system.img)
Signed-off-by: Zhigang Wang <zhigang.x.wang@oracle.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Currently, xendomains service will save or migrate all the running domains in
the host on stop.
Change XENDOMAINS_AUTO_ONLY=true. Then on service stop, it will only
save or migrate all VMs under XENDOMAINS_AUTO (/etc/xen/auto), but always
shutdown all the running VMs.
It's a way to cleanly shutdown all the running VMs on system reboot. If you
want to save/migrate a VM, create a link to /etc/xen/auto.
Signed-off-by: Zhigang Wang <zhigang.x.wang@oracle.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
The new feature introduced in 23401:a44b12ee2fd3 was broken; it in
general always fails, at least if there are no hotplug scripts.
If there are no hooks, call_hooks ends up running this:
[ -x ".....*.hook" ] && . "..... *.hook"
This does not directly trigger set -e and sigerr. However, it is the
last command exected in call_hooks. So the return status of
call_hooks is an error, and thus a sigerr happens when call_hooks
returns.
The bug affects xl and xm. However xl does not detect failure of the
hotplug script.
Change the script to use if...then rather than &&, as the latter has
very confusing and undesirable semantics.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Improve busy loop device detection after changeset 22773:02c0af2bf280
The intention is not to find the file to be mounted in the losetup -a
output. What matters are existing mounted files with the same dev:inode
as the new file. So the fix is to apply variable expansion which
happens only without double quotes. Otherwise $dev will contain
newlines for hardlinked files, as mentioned in the commit message from
the changeset above.
losetup -a does also truncate long filenames to 62 chars due to ioctl
limitations. This part is fixed with 2.6.37 where the filename can be
obtained from sysfs. As a result very long filenames will be missed.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Otherwise make can search the path relative to certain standard paths
such as /usr/include (e.g., the line '-include $(XEN_ROOT)/.config' in
Config.mk suffers from this).
Signed-off-by: Keir Fraser <keir@xen.org>
In vif-common.sh, set the shell variable "dev" to the new interface
name when interfaces are renamed, and consistently use this variable
in all the vif scripts.
This fixes hotplug of renamed interfaces.
From: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
From: Patrick Scharrenberg <pittipatti@web.de>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Signed-off-by: Patrick Scharrenberg <pittipatti@web.de>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Apply mtu size from bridge interface also in vif interface.
This depends on a kernel change which allows arbitrary mtu sizes until
the frontend driver has connected to the backend driver. Without this
kernel change, the vif mtu size will be limited to 1500 even with this
change to the vif-bridge script.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Ian Campbell <Ian.Campbell@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Fix an anomaly in /etc/xen/scripts/network-route.
Currently this script contains
netdev=${netdev:-eth${vifnum}}
ie. netdev is set to eth${vifnum} by default. Unfortunately vifnum
is not set anywhere in the xen code so the default is actually the
broken "eth". And anyway the vif number (which is what vifnum ought
to be) is not relevant.
The patch changes the default to eth0 (which is what the comment at
the top of the file says it should be).
Signed-off-by: Michael Young <m.a.young@durham.ac.uk>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Changset 22806:eefb8e971be5 broke 'xl'.
After starting the xenstored, xenconsoled, xenbackendd and running xl
create I get this:
libxl: error: libxl.c:53:libxl_ctx_init Is xenstore daemon running?
failed to stat /var/run/xenstore.pid: No such file or directory
cannot init xl context
The reason for the failure is that the NetBSD startup script
creates the file
/var/run/xenstored.pid
but libxl checks for
/var/run/xenstore.pid
Attached patch makes this consistent across Linux and NetBSD by
changing the Linux name (to the more-conventional food.pid form).
Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
"xen-watchdog stop" attempts to kill non existing "watchdogd" but
misses the running "xenwatchdogd". This also provokes errors during
install and Debian package management.
Signed-off-by: user virtual <virtualusr@gmail.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
tools/hotplug/Linux/block change for this losetup -a output:
(inode 12 is listed twice due to hardlinks)
/dev/loop0: [0809]:139267 (/abuild/vdisk-sles11_2-disk0)
/dev/loop1: [0809]:139266 (/abuild/vdisk-sles11_1-disk1)
/dev/loop3: [0809]:139267 (/abuild/vdisk-sles11_2-disk0)
/dev/loop5: [0809]:139273 (/abuild/vdisk-sles11_5-disk1)
/dev/loop8: [0809]:12 (/abuild/bootiso-xenpaging-sles11_5.iso)
/dev/loop10: [0809]:12 (/abuild/bootiso-xenpaging-sles11_4.iso)
/dev/loop11: [0809]:139271 (/abuild/vdisk-sles11_4-disk0)
Without this change, $dev would contain /dev/loop8\n/dev/loop10
Applies to 4.0 and 4.1
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
This is the default runlevel on a Debian system.
In addition update-rc.d complains:
update-rc.d: warning: xencommons stop runlevel arguments (0 1 6) do not match LSB Default-Stop values (1)
and it seems reasonable to stop the daemons during shutdown or reboot
so make that change as well.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Avoid applying to the bridge and physical network device.
This should un-break dom0 networking in the old xend-creates-bridge
setup (problem introduced in 22493:937488219719).
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Since 22187:c41252a55a0a we have been installing our example
xencommons settings file in either /etc/sysconfig or /etc/default,
depending on whether /etc/sysconfig exists.
However I omitted to add the code to /etc/init.d/xencommons to
actually read either version of the file, although every other init
script seems to have it.
An effect of this misplaced/unread file is that the automatic tests
don't cause xenconsoled to collect serial logs, because the tester
edits whichever file actually exists.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Checking for RELATED,ESTABLISHED traffic being sent to a domU requires
connection tracking, which adds unexpected (to most users) load to
dom0. Heavily loaded systems can fill the conntrack tables.
So avoid this, be more liberal in what we accept, and leave it to domU
to police its own input.
Signed-off-by: Keir Fraser <keir@xen.org>
22508:57907b28e51a was unsafe for mutual exclusion. There is a case
that the owner file doesn't exist yet when an atomic mkdir operation
fails.
Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Most versions of netback do not support setting the MAC address. This
means that c/s 937488219719 causes the hotplug script to break for
vifs, even as it fixes the bridge-wrong-MAC-address problem for tap
devices (used for emulated nics).
The mac-setting operation is not necessary for vifs since they are
hardcoded to fe:ff* anyway.
As a band-aid, add "|| true" to the call to ip link, so that this
error does not cause the hotplug operation to fail. There will still
be an error message printed until we can fix this better.
Suggested-by: Ian Campbell <Ian.Campbell@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
When a script using locking.sh is stopped by ctrl-C, the lock file remains.
We have to wait 100 seconds for releasing the lock at the next time.
Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
While doing block-detach blktap2 disk, tap2 device info is not cleared from
xenstore /vm/uuid/xxx. The reason is in xen-hotplug-cleanup script: when $vm_dev
does not exist, $(xenstore-read "$vm_dev" 2>/dev/null) is also "", won't enter
the block. So, change to use cmd return value to check existence.
Signed-off-by Chunyan Liu <cyliu@novell.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
committer: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
If a tap device is not given an explicit MAC address it will generate
one randomly.
The behaviour of the Linux bridge is to pickup the lowest MAC address
of any port for use in for ARP, STP etc. If the tap device's randomly
generated MAC address happens to be the lowest then this can cause all
manner of strange networking glitches in both domain 0 and guests when
the bridge suddenly takes over from the previously used MAC address.
We choose FE:FF:FF:FF:FF:FF as it the numerically largest
non-broadcast address. This ensures that the physical NIC device's
port will have the lowest MAC address and therefore be the one picked
up by the bridge.
vif devices already have a MAC address of FE:FF:FF:FF:FF:FF set by
netback already but there is no harm in forcing it a second time in
the hotplug script.
tap devices are added by the "add" event and therefore we should call
setup_bridge_port then as well as for "online" which is caused by vif
devices.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
With newer (pvops) kernels logs get flooded with this iptables
warning: physdev match: using --physdev-out in the OUTPUT, FORWARD and
POSTROUTING chains for non-bridged traffic is not supported anymore
Using the --physdev-is-bridged option prevents this.
See also: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=571634#10
Signed-off-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
While earlier this year some work was done to eliminate libxc's
creation of nodes under /dev (as in some cases it actually got
things wrong), I just found that tapdisk2 does exactly the same.
While I'm not currently aiming at removing this code, I want to
at least suggest some adjustments to the provided rules file.
First of all, the present rule
KERNEL=="blktap[0-9]*", NAME="xen/%k"
matches both blktap1's devices and blktap2's ring devices,
resulting in whoever comes last replacing what was there
before (e.g. a tap2:aio: attach will replace bltap1's
/dev/blktap0 [i.e. the main control device] with the ring device
of the new virtual disk). Therefore we should add a subsystem
qualifier there.
Second, at some udev versions default to using 0660 as the
permissions on nodes it creates. The kernel (with devtmpfs)
defaults to 0600, and hence I'd suggest to also make this
explicit in the rules.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Cc: Boris Derzhavets <bderzhavets@yahoo.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Introduce CONFIG_LEAF_DIR, SUBSYS_DIR, INITD_DIR variables to cope
better with variation between distributions.
See docs/misc/distro_mapping.txt for details.
Signed-off-by: Bruce Edge <bruce.edge@gmail.com>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
For example, (vif-script 'vif-bridge bridge=eth1') in xend-config.sxp will
cause vif-setup to attempt to execute 'vif-bridge bridge=eth1' due to a
quoting mismatch. The fix appears to be to remove the extra quotes around
"$script" in vif-setup.
Signed-off-by: Brendan Cully <brendan@cs.ubc.ca>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
From: Anthony PERARD <anthony.perard@citrix.com>
This patch adds a second argument to vif-bridge script. It can be "vif"
or "tap". "vif" give the default behavior and "tap" just add the
interface to the found bridge when the action is "add".
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
---
tools/hotplug/Linux/vif-bridge | 20 ++++++---
tools/hotplug/Linux/vif-common.sh | 70 ++++++++++++++++++++++++---------
tools/hotplug/Linux/xen-backend.rules | 5 +-
tools/libxl/libxl.c | 6 +-
4 files changed, 70 insertions(+), 31 deletions(-)
# User Olaf Hering <olaf@aepfle.de>
# Date 1280140115 -3600
# Node ID 8c3e1e8ddd599371d882b17996be88b545119ccb
# Parent 2092c06f9467747da608c448ddd01e2f1f82290a
tools/hotplug: init.d should test for /proc/xen/capabilities being a file
Correct test for /proc/xen/capabilities
It is a file, not a directory.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
"Default-Enabled:" is not a LSB keyword.
Remove it from the LSB section.
This avoids an openSuSE buildcheck warning and we are not aware of any
reason why it should be kept.
From: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Modified-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Install rules straight into /etc/udev/rules.d
udev version 029 since mid 2004 uses this directory already.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Add missing dependencies to runlevel script
xend requires at least xenstored
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
On SuSE the configuration files in /etc/sysconfig/ will be updated in
a smart way from templates found in /var/adm/fillup-templates/
Introduce new variable SYSCONFIG_DIR for Linux installations. Now
only one place needs patching, or it can be specified as option to
make(1).
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Committed-by: Ian Jackson <ian.jackson@eu.citrix.com>
_release_lock should be used instead of release_lock.
sigerr is introduced so that it can be redefined by
xen-hotplug-common.sh to a version which writes error status to xenstore.
Signed-off-by: Kouya Shimura <kouya@jp.fujitsu.com>
On one of my boxes, the xenstore-write setting dom0's name starts
before xenstored is actually ready to handle the connection properly,
resulting in the name set failing. Wait for xenstored to be up and
responding to reads before continuing, timing out after 30 seconds.
Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com>
Fix the xencommons init script chkconfig configuration since the
priority was missing here and chkconfig was complaining about invalid
chkconfig script so I added both start and stop priorities to the
chkconfig line and it was working fine, the script was successfully
added to chkconfig when using `chkconfig --add xencommons` and
management using the chkconfig utility was now possible.
Tested on RHEL-5 Server with Xen-4.1-unstable installed, running on
PVops kernel 2.6.32.15 and it was working fine.
Signed-off-by: Michal Novotny <minovotn@redhat.com>
If xenfs is compiled as a module, now cannot complete
'service xencommons start', modprobe xenfs can fix it.
Signed-off-by: Yu Zhiguo <yuzg@cn.fujitsu.com>
Previously, the default "network-script",
/etc/xen/scripts/network-bridge, would attempt to do its horrid work
even if you had already set everything up in /etc/network/interfaces.
Setting up your bridge in /etc/network/interfaces is:
* easy
* required for libxl since libxl never does it for you
* not a fragile piece of lunacy
* properly documented
* the way everyone would expect it to work
In this small patch we make it so that the default config for xend
doesn't mess about on startup if you already have a bridge, and
doesn't mess about on shutdown unless your first-named bridge (eth0 or
xenbr0, normally) doesn't also have a physical interface named
p<whatever> (peth0 or pxenbr0) enslaved to it. The latter test is not
ideal but will hopefully do from now until the time xend finally dies.
We also fix the "documentation" - ie, the comments in the default
xend-config.sxp - to correspond to reality.
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Ian Campbell
Olaf Hering
Zhigang Wang
Fabio Fantoni
Ian Jackson
W. Michael Petullo
Keir Fraser
Michael Young
Christoph Egger
user virtual
Kouya Shimura
Chunyan Liu
Sander Eikelenboom
Jan Beulich
Brendan Cully
Anthony Perard
Stefano Stabellini
Keir Fraser