Subject: Re: [ovirt-users] Update to 3.5.1 scrambled multipath.conf?
Message-ID:
610569491.313815.1422275879664.javamail.zim...@redhat.com
Content-Type: text/plain; charset=utf-8
- Original Message -
From: Dan Kenigsberg dan...@redhat.com
To: Gianluca Cecchi gianluca.cec...@gmail.com, nsof...@redhat.com
Cc: users users@ovirt.org, ykap...@redhat.com
Sent: Monday, January 26, 2015 2:09:23 PM
Subject: Re: [ovirt-users] Update to 3.5.1 scrambled multipath.conf?
On Sat, Jan 24, 2015 at 12:59:01AM +0100, Gianluca Cecchi wrote:
Hello,
on my all-in-one installation @home I had 3.5.0 with F20.
Today I updated to 3.5.1.
it seems it modified /etc/multipath.conf preventing me from using my second
disk at all...
My system has internal ssd disk (sda) for OS and one local storage domain
and another disk (sdb) with some partitions (on one of them there is also
another local storage domain).
At reboot I was put in emergency boot because partitions at sdb disk could
not be mounted (they were busy).
it took me some time to understand that the problem was due to sdb gone
managed as multipath device and so busy for partitions to be mounted.
Here you can find how multipath became after update and reboot
https://drive.google.com/file/d/0BwoPbcrMv8mvS0FkMnNyMTdVTms/view?usp=sharing
No device-mapper-multipath update in yum.log
Also it seems that after changing it, it was then reverted at boot again (I
don't know if the responsible was initrd/dracut or vdsmd) so in the mean
time the only thing I could do was to make the file immutable with
chattr +i /etc/multipath.conf
The supported method of achieving this is to place # RHEV PRIVATE in
the second line of your hand-modified multipath.conf
I do not understand why this has happened only after upgrade to 3.5.1 -
3.5.0's should have reverted you multipath.conf just as well during each
vdsm startup.
The good thing is that this annoying behavior has been dropped from the
master branch, so that 3.6 is not going to have it. Vdsm is not to mess
with other services config file while it is running. The logic moved to
`vdsm-tool configure`
and so I was able to reboot and verify that my partitions on sdb were ok
and I was able to mount them (for safe I also ran an fsck against them)
Update ran around 19:20 and finished at 19:34
here the log in gzip format
https://drive.google.com/file/d/0BwoPbcrMv8mvWjJDTXU1YjRWOFk/view?usp=sharing
Reboot was done around 21:10-21:14
Here my /var/log/messages in gzip format, where you can see latest days.
https://drive.google.com/file/d/0BwoPbcrMv8mvMm1ldXljd3hZWnM/view?usp=sharing
Any suggestion appreciated.
Current multipath.conf (where I also commented out the getuid_callout that
is not used anymore):
[root@tekkaman setup]# cat /etc/multipath.conf
# RHEV REVISION 1.1
blacklist {
devnode ^(sda|sdb)[0-9]*
}
I think what happened is:
1. 3.5.1 had new multipath version
2. So vdsm upgraded the local file
3. blacklist above was removed
(it should exists in /etc/multipath.bak)
To prevent local changes, you have to mark the file as private
as Dan suggests.
Seems to be related to the find_multiapth = yes bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1173290
Ben, can you confirm that this is the same issue?
defaults {
polling_interval 5
#getuid_callout /usr/lib/udev/scsi_id --whitelisted
--replace-whitespace --device=/dev/%n
no_path_retry fail
user_friendly_names no
flush_on_last_del yes
fast_io_fail_tmo 5
dev_loss_tmo 30
max_fds 4096
}
Regards,
Nir
--
Message: 3
Date: Mon, 26 Jan 2015 14:25:23 +0100
From: Martin Pavl?k mpav...@redhat.com
To: Punit Dambiwal hypu...@gmail.com
Cc: users@ovirt.org users@ovirt.org
Subject: Re: [ovirt-users] Loopback interface has huge network
transctions
Message-ID: 6e2536e1-27ae-47eb-bca7-88b3901d2...@redhat.com
Content-Type: text/plain; charset=us-ascii
Hi Punit,
it is ok since ovirt-engine is using loopback for its purposes, e.g. postgress
databas access. Try to check netstat -putna | grep 127.0.0 to see how many
things are attached to it.
If you are interested in checking what is going on a bit more have a look @
this great how-to
http://www.slashroot.in/find-network-traffic-and-bandwidth-usage-process-linux
http://www.slashroot.in/find-network-traffic-and-bandwidth-usage-process-linux
HTH
Martin Pavlik
RHEV QE
On 26 Jan 2015, at 02:24, Punit Dambiwal hypu...@gmail.com wrote:
Hi,
I have noticed that the loop back interface has huge network packets sent and
received...is it common or need to some tweaks
1. Ovirt 3.5.1
2. Before ovirt engine installation...loop back address doesn't has that huge
amount of packets sent/receive
3. After Ovirt engine install it's keep increasing
