[one-users] Breakage when upgrading from 4.38 to 4.4 ... [Resolved]

Fri Dec 6 11:32:08 PST 2013

Ok. Thanks the fix is already in master and one-4.4 branch.

http://dev.opennebula.org/issues/2541

About the problem. Datastores are monitored through two different sources:

1.- monitor script for image datastores.

2.- System datastore are monitored through the monitor_ds script (as in
general they cannot be accessed in the front-end and are potentially
not-shared). There are only two system datastore types, shared and ssh
(with an associated LVM for the FS LVM datastore) so the du/df commands
should work.

The proposed patch adds additional error control so totally agree with it
(also add it a couple of checks for the other variable outputs)

THANKS!

Ruben

On Thu, Dec 5, 2013 at 6:29 PM, Gareth Bult <gareth at linux.co.uk> wrote:

> Ok, not sure what the difference is, but this is a fix;
>
> kvm-probes.d/monitor_ds.sh
>
> --- monitor_ds.sh.orig 2013-12-05 17:06:35.251763742 +0000
> +++ monitor_ds.sh 2013-12-05 16:55:11.699743037 +0000
> @@ -31,6 +31,10 @@
> TOTAL_MB=$(df -B1M -P $dir 2>/dev/null | tail -n 1 | awk '{print $2}')
>  FREE_MB=$(df -B1M -P $dir 2>/dev/null | tail -n 1 | awk '{print $4}')
>
> + USED_MB=${USED_MB:-"0"}
> + TOTAL_MB=${TOTAL_MB:-"0"}
> + FREE_MB=${FREE_MB:-"0"}
> +
> if [ -n "$LVM_SIZE_CMD" ]; then
>  LVM_SIZE=$($LVM_SIZE_CMD ${LVM_VG_PREFIX}${ds} 2>/dev/null)
> LVM_STATUS=$?
> The host monitor seems to be calling a generic monitor which is also
> grabbing information about datastores.
> In an environment (such as VDC) where the data exists remotely, the
> standard monitor (which uses 'du') isn't
> going to provide any useful results, indeed in this instance it errors and
> the script returns blanks, which breaks
> the host monitoring. Returning '0' on failure fixes the issue ...
>
> Any chance this could inserted in the next release please?
>
> --
> *Gareth Bult*
> “The odds of hitting your target go up dramatically when you aim at it.”
>
>
>
> ------------------------------
> *From: *"Gareth Bult" <gareth at linux.co.uk>
> *To: *users at lists.opennebula.org
> *Sent: *Thursday, 5 December, 2013 3:47:12 PM
> *Subject: *[one-users] Breakage when upgrading from 4.38 to 4.4 ...
>
> Hi, I've run the upgrade just to see if a number of issues I was having
> were fixed, and I seem to have
> ended up with a fairly terminal issue I can't spot.
>
> Host monitoring is now failing for hosts that previously seemed to be
> working. The reason seems to be
> that the host is somehow looking at the datastores, and this in turn is
> failing.
>
> The datastore monitoring is correct.
> The error in oned.log is as follows;
>
> *Thu Dec 5 15:24:47 2013 [ONE][E]: Error parsing host information: syntax
> error, unexpected EQUAL, expecting COMMA or CBRACKET at line 30, columns
> 494:497. Monitoring information:*
> ARCH=x86_64
> MODELNAME="AMD Phenom(tm) II X6 1100T Processor"
> HYPERVISOR=kvm
> TOTALCPU=600
> CPUSPEED=3300
> TOTALMEMORY=16175216
> USEDMEMORY=399320
> FREEMEMORY=15775896
> FREECPU=600.0
> USEDCPU=0.0
> NETRX=33791417902
> NETTX=25290741468
> DS_LOCATION_USED_MB=2637
> DS_LOCATION_TOTAL_MB=40190
> DS_LOCATION_FREE_MB=28202
> DS = [
>  ID = 0,
> USED_MB = 29,
> TOTAL_MB = 40190,
>  FREE_MB = 28202
> ]
> DS = [
>  ID = 1,
> USED_MB = 2609,
> TOTAL_MB = 40190,
>  FREE_MB = 28202
> ]
> *DS = [*
> * ID = 107,*
> * USED_MB = ,*
> * TOTAL_MB = ,*
> * FREE_MB =*
> *]*
> *DS = [*
> * ID = 109,*
> * USED_MB = ,*
> * TOTAL_MB = ,*
> * FREE_MB =*
> *]*
> DS = [
>  ID = 114,
> USED_MB = 1,
> TOTAL_MB = 40190,
>  FREE_MB = 28202
> ]
> DS = [
>  ID = 2,
> USED_MB = 1,
> TOTAL_MB = 40190,
>  FREE_MB = 28202
> ]
> HOSTNAME=node1
> VM_POLL=YES
> VERSION="4.4.0"
> So it would appear that it's calling datastore/monitor, and it's failing
> .. however the script does work and is reporting
> the correct size in the datastore monitor. I've added syslog to the
> monitor script, it is being called and it is returning
> the correct result ...
>
> If I call the script on the command line with a pasted in base64 and host
> it, this too gives the correct results;
>
> oneadmin at nebula:~/remotes$ ssh node1
> /var/lib/one/remotes/datastore/vdc/monitor
> "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"
> 109
>
> TOTAL_MB=1500101.21
> FREE_MB=963230.30
> USED_MB=536871
> Short of trying to dig through oned's source code I'm stuck - can anyone
> help?
>
> My datastore driver type is "vdc", even if I insert a static script (I've
> also tried the monitor driver from "fs")
> that just prints out "TOTAL_MB=0" etc .. I still get the same issue ...
>
> ???
> (and it was working fine .. before the upgrade??)
>
>
> --
> *Gareth Bult*
> “The odds of hitting your target go up dramatically when you aim at it.”
>
>
>
>
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> Users at lists.opennebula.org
> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>
>
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>
>

-- 
-- 
Ruben S. Montero, PhD
Project co-Lead and Chief Architect
OpenNebula - Flexible Enterprise Cloud Made Simple
www.OpenNebula.org | rsmontero at opennebula.org | @OpenNebula
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