Re: [Users] backups
by Martijn Grendelman
Blaster schreef op 27-11-2013 17:23:
> On 11/27/2013 4:24 AM, Martijn Grendelman wrote:
>> The problem with snapshot-based backups is, that they are usually only
>> crash-consistent, meaning that they contain the state of a system's
>> disks as they would be if you pulled the power plug on a server. If
>> you restore a system from this type of backup, you would see file
>> system recovery happening at the first boot, and you risk data loss
>> from -for example- database servers.
>
> The work-around for this is to SSH into the guest first, put the
> database into backup mode(maybe run sync a time or two to flush out as
> much from RAM as possible), take the snap shot, ssh back in to resume
> the database, backup the snap, delete the snap.
Yes, for example for MySQL, you could
1. issue a FLUSH TABLES WITH READ LOCK statement
2. create a snapshot
3. issue a UNLOCK TABLES statement
before starting a backup from the snapshot, to get a consistent backup
of the binary table space.
Cheers,
Martijn.
11 years
[Users] oVirt PPC status update
by Sandro Bonazzola
Hi,
anybody can report about PPC status for 3.3.2 and 3.4.0 target releases?
It would be nice having someone for PPC at ovirt-sync meeting from next week on, so please join :-)
Thanks,
--
Sandro Bonazzola
Better technology. Faster innovation. Powered by community collaboration.
See how it works at redhat.com
11 years
[Users] Where do you run the engine?
by Ernest Beinrohr
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Just curious, where/how you run the engine. I run it in libvirt/kvm on
one of my storage domains.
--
Ernest Beinrohr, AXON PRO
DevOps, Ing <http://www.beinrohr.sk/ing.php>, RHCE
<http://www.beinrohr.sk/rhce.php>, RHCVA
<http://www.beinrohr.sk/rhce.php>, LPIC
<http://www.beinrohr.sk/lpic.php>, VCA <http://www.beinrohr.sk/vca.php>,
+421-2--6241-0360 <callto://+421-2--6241-0360>, +421-903--482-603
<callto://+421-903--482-603>
icq:28153343, skype:oernii-work <callto://oernii-work>,
jabber:oernii@jabber.org
------------------------------------------------------------------------
For a successful technology, reality must take precedence over public
relations, for Nature cannot be fooled. Richard Feynman
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Just curious, where/how you run the engine. I run it in libvirt/kvm
on one of my storage domains.<br>
<br>
<br>
<div class="moz-signature">-- <br>
<div id="oernii_footer" style="color: gray;">
<span style="font-family: Lucida Console, Luxi Mono, Courier,
monospace; font-size: 90%;">
Ernest Beinrohr, AXON PRO<br>
DevOps,
<a style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/ing.php">Ing</a>, <a
style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/rhce.php">RHCE</a>, <a
style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/rhce.php">RHCVA</a>, <a
style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/lpic.php">LPIC</a>, <a
style="text-decoration: none; color: gray;"
href="http://www.beinrohr.sk/vca.php">VCA</a>, <a
style="text-decoration: none; color: gray;"
href="callto://+421-2--6241-0360">+421-2--6241-0360</a>, <a
style="text-decoration: none; color: gray;"
href="callto://+421-903--482-603">+421-903--482-603</a><br>
icq:28153343, <a style="text-decoration: none; color: gray;"
href="callto://oernii-work">skype:oernii-work</a>,
<a class="moz-txt-link-abbreviated" href="mailto:jabber:oernii@jabber.org">jabber:oernii@jabber.org</a>
<br>
</span>
<hr style="height: 1px; width: 95%"> <span style="font-size:
70%;">
For a successful technology, reality must take precedence
over public relations, for Nature cannot be fooled. Richard
Feynman </span> </div>
</div>
<img
src="http://nojsstats.appspot.com/UA-44497096-1/email.beinrohr.sk"
moz-do-not-send="true" border="0" height="1" width="1">
</body>
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11 years
[Users] Guest Agent
by Thomas Suckow
I am running several RHEL6 vms in ovirt. I am looking to install the
guest agent.
The releases repo has ovirt-guest-agent-common and EPEL has
ovirt-guest-agent. Which of these should I use?
How is this distinct from qemu-guest-agent?
If I were to install an Ubuntu vm, what should I do about the guest agent?
-
Thomas
11 years
[Users] ssl error using ovirt-shell in 3.3.1
by Gianluca Cecchi
Hello,
based on RHEVM 3.2 and 3.3 beta docs I'm trying connection from ovirt cli.
I have:
engine on f19 + ovirt stable ovirt-engine-3.3.1-2.fc19.noarch
client from where I run cli is f19 with
ovirt-engine-sdk-python-3.3.0.7-1.fc19.noarch
ovirt-engine-cli-3.3.0.5-1.fc19.noarch
$ curl -o ovirt-f18engine.cer http://f18engine/ca.crt
$ cat ~/.ovirtshellrc
[cli]
autoconnect = True
autopage = True
[ovirt-shell]
username = "internal\\admin"
timeout = None
extended_prompt = False
url = https://f18engine:443/api
insecure = False
filter = False
session_timeout = None
ca_file =
dont_validate_cert_chain = False
key_file = None
password =
cert_file = /home/gcecchi/ovirt-f18engine.cer
cert_file seems not to work because I get
$ ovirt-shell -c
Password:
error: server CA certificate file must be specified for SSL secured connection.
I presume referring to
https://bugzilla.redhat.com/show_bug.cgi?id=960983
still in verified state
$ ovirt-shell -c -A /home/gcecchi/ovirt-f18engine.cer
Password:
error: [Errno 336265225] _ssl.c:351: error:140B0009:SSL
routines:SSL_CTX_use_PrivateKey_file:PEM lib
++++++++++++++++++++++++++++++++++++++++++
Welcome to oVirt shell
++++++++++++++++++++++++++++++++++++++++++
[oVirt shell (disconnected)]# exit
If I change .ovirtshellrc contents with
cert_file =
and run
$ ovirt-shell -c -A /home/gcecchi/ovirt-f18engine.cer
Password:
I get
error: _ssl.c:291: Both the key & certificate files must be specified
What I'm doing wrong?
Gianluca
11 years
[Users] 3.3.1 node isos?
by Paul Jansen
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Are the 3.3.1 node isos that Fabian mentionedlate last week available for d=
ownload yet?=0AI've had a look around resources.ovirt.org but can't see any=
thing yet.=0A
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<html><body><div style=3D"color:#000; background-color:#fff; font-family:ti=
mes new roman, new york, times, serif;font-size:12pt"><div>Are the 3.3.1 no=
de isos that Fabian mentioned<span> late last week available for download y=
et?</span></div><div style=3D"color: rgb(0, 0, 0); font-size: 16px; font-fa=
mily: times new roman,new york,times,serif; background-color: transparent; =
font-style: normal;"><span>I've had a look around resources.ovirt.org but c=
an't see anything yet.</span></div><div style=3D"color: rgb(0, 0, 0); font-=
size: 16px; font-family: times new roman,new york,times,serif; background-c=
olor: transparent; font-style: normal;"><span><br></span></div></div></body=
></html>
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11 years
[Users] gluster storage
by tristano82＠libero.it
Hello everybody,
i'm successful using ovirt with 16 physical node, in a FC cluster with a very
BIG dell compellent (and so expensive) enterprise storage ;)
I'm researching a new architecture for a new cluster, and i want to understand
more better the glusterFS integration in ovirt.
As i understand you have to install a normal physical node, with also the
glusterFS package… right ? after that you have to create a new cluster in ovirt
, new datacenter and put in this new node. in that datacenter you can create a
new data domain ( glusterFS ) that reside on that host. right ?
and… after that ? ok i have 1 node that are also my " storage ", and if i want
to all more compute node ? … every new compute node are a new " brick " for
glusterFS so i can expand/redundant the first one ?
i don't have the architecture very clear in my mind, and the documentation
don't clarify the final architecture for this type of usage.
Thanks for help guys
Luke
11 years
[Users] Building ovirt-guest-agent is destroying my VM!
by Blaster
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So this has happened twice now....Running Windows 7/64 in a VM.
I git cloned the ovirt windows agent and installed the 3 Python
applications as instructed in the README.
When I run the win-guest-agent-build-exe.bat file to create the exe, it
gets to the line of:
adding python27.dll as a resource to virtguestservices.exe.
Then the cmd.exe window just hangs. It can not be killed, nor can any
other window.
The system will not shutdown, either from the Windows side or the VM
side. I had to power off from the GUI.
The first time this happened, the VM hung and became non-responsive.
When I tried to reboot the physical machine, the physical machine would
not reboot either. Had to hit the reset button to get it back.
The second time this happened, ovirt was able to power off successfully,
I decided to reboot the physical machine again, and again the physical
machine hung shutting down and had to physically reset.
Both times when I tried to start the Windows 7 VM again, ovirt refused
to start it. I get the message
Failed to run VM Win7-01 (User: admin@internal).
So off to restore the VM for a second time....
Any explanation how Python is able to destroy a VM like that?
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</head>
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So this has happened twice now....Running Windows 7/64 in a VM.<br>
<br>
I git cloned the ovirt windows agent and installed the 3 Python
applications as instructed in the README.<br>
<br>
When I run the win-guest-agent-build-exe.bat file to create the exe,
it gets to the line of:<br>
adding python27.dll as a resource to virtguestservices.exe.<br>
<br>
Then the cmd.exe window just hangs. It can not be killed, nor can
any other window.<br>
<br>
The system will not shutdown, either from the Windows side or the VM
side. I had to power off from the GUI.<br>
<br>
The first time this happened, the VM hung and became
non-responsive. When I tried to reboot the physical machine, the
physical machine would not reboot either. Had to hit the reset
button to get it back.<br>
<br>
The second time this happened, ovirt was able to power off
successfully, I decided to reboot the physical machine again, and
again the physical machine hung shutting down and had to physically
reset.<br>
<br>
Both times when I tried to start the Windows 7 VM again, ovirt
refused to start it. I get the message<br>
<div title="" tabindex="0" style="outline-style: none;"
__gwt_cell="cell-gwt-uid-33835">
<div id="gwt-uid-3368_col2_row0">Failed to run VM Win7-01 (User:
admin@internal).<br>
<br>
So off to restore the VM for a second time....<br>
<br>
Any explanation how Python is able to destroy a VM like that?<br>
<br>
</div>
</div>
<br>
<br>
</body>
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11 years
[Users] backups
by Charles
How are you folks doing your hypervisor level backups?
Under ESXi I used GhettoVCB which basically took a snap shot, copied the
disk image to another location, then deleted the snap.
I haven't been able to find too much information on how this can be done
with ovirt. I see discussions on the new backup API, but I'm not
interested in spending big bucks on an enterprise backup solution for a
home lab.
Only discussion I saw on using snapshots for backups said don't do it
because the tools don't sync memory when the snapshots are taken.
11 years
