Re: [ovirt-users] Concerns with increasing vdsTimeout value on engine?
On 07/14/2015 12:35 PM, Piotr Kliczewski wrote: On Mon, Jul 13, 2015 at 5:12 PM, Groten, Ryan ryan.gro...@stantec.com wrote: Thanks for the responses everyone and for the RFE. I do use HA in some places at the moment, but I do see another timeout value called vdsConnectionTimeout. Would HA use this value or vdsTimeout (set to 2 by default) when attempting to contact the host? There is a difference between the two: vdsConnectionTimeout - is a timeout used during connecting to a remote host. By default it is 2 seconds. vdsTimeout - high level command invocation timeout used by all commands. By default it is 3 minutes. As far as I understand you are looking for a possibility to customize vdsTimeout for some of the commands. For me, yes, the case is to have an option to set higher value of vdsTimeout for a specific command. -Original Message- From: Shubhendu Tripathi [mailto:shtri...@redhat.com] Sent: Monday, July 13, 2015 2:25 AM To: Piotr Kliczewski Cc: Omer Frenkel; Groten, Ryan; users@ovirt.org Subject: Re: [ovirt-users] Concerns with increasing vdsTimeout value on engine? On 07/13/2015 01:42 PM, Piotr Kliczewski wrote: On Mon, Jul 13, 2015 at 5:57 AM, Shubhendu Tripathi shtri...@redhat.com wrote: On 07/12/2015 09:53 PM, Omer Frenkel wrote: - Original Message - From: Liron Aravot lara...@redhat.com To: Ryan Groten ryan.gro...@stantec.com Cc: users@ovirt.org Sent: Sunday, July 12, 2015 5:44:28 PM Subject: Re: [ovirt-users] Concerns with increasing vdsTimeout value on engine? - Original Message - From: Ryan Groten ryan.gro...@stantec.com To: users@ovirt.org Sent: Friday, July 10, 2015 10:45:11 PM Subject: [ovirt-users] Concerns with increasing vdsTimeout value on engine? When I try to attach new direct lun disks, the scan takes a very long time to complete because of the number of pvs presented to my hosts (there is already a bug on this, related to the pvcreate command taking a very long time - https://bugzilla.redhat.com/show_bug.cgi?id=1217401 ) I discovered a workaround by setting the vdsTimeout value higher (it is 180 seconds by default). I changed it to 300 seconds and now the direct lun scan returns properly, but I’m hoping someone can warn me if this workaround is safe or if it’ll cause other potential issues? I made this change yesterday and so far so good. Hi, no serious issue can be caused by that. Keep in mind though that any other operation will have that amount of time to complete before failing on timeout - which will cause delays before failing (as the timeout was increased for all executions) when not everything is operational and up as expected (as in most of the time). I'd guess that a RFE could be opened to allow increasing the timeout of specific operations if a user want to do that. thanks, Liron. if you have HA vms and use power management (fencing), this might cause longer downtime for HA vms if host has network timeouts: the engine will wait for 3 network failures before trying to fence the host, so in case of timeouts, and increasing it to 5mins, you should expect 15mins before engine will decide host is non-responsive and fence, so if you have HA vm on this host, this will be the vm downtime as well, as the engine will restart HA vms only after fencing. you can read more on http://www.ovirt.org/Automatic_Fencing Even I am in a need where, I try to delete all the 256 gluster volume snapshots using a single gluster CLI command, and engine gets timed out. So, as Liron suggested it would be better if at VDSM verb level we are able to set timeout. That would be better option and caller needs to use the feature judicially :) Please open a RFE for being able to set operation timeout for single command call with description of use cases for which you would like to set the timeout. Piotr, I created an RFE BZ at https://bugzilla.redhat.com/show_bug.cgi?id=1242373. Thanks and Regards, Shubhendu Thanks, Ryan ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Concerns with increasing vdsTimeout value on engine?
On Mon, Jul 13, 2015 at 5:12 PM, Groten, Ryan ryan.gro...@stantec.com wrote: Thanks for the responses everyone and for the RFE. I do use HA in some places at the moment, but I do see another timeout value called vdsConnectionTimeout. Would HA use this value or vdsTimeout (set to 2 by default) when attempting to contact the host? There is a difference between the two: vdsConnectionTimeout - is a timeout used during connecting to a remote host. By default it is 2 seconds. vdsTimeout - high level command invocation timeout used by all commands. By default it is 3 minutes. As far as I understand you are looking for a possibility to customize vdsTimeout for some of the commands. -Original Message- From: Shubhendu Tripathi [mailto:shtri...@redhat.com] Sent: Monday, July 13, 2015 2:25 AM To: Piotr Kliczewski Cc: Omer Frenkel; Groten, Ryan; users@ovirt.org Subject: Re: [ovirt-users] Concerns with increasing vdsTimeout value on engine? On 07/13/2015 01:42 PM, Piotr Kliczewski wrote: On Mon, Jul 13, 2015 at 5:57 AM, Shubhendu Tripathi shtri...@redhat.com wrote: On 07/12/2015 09:53 PM, Omer Frenkel wrote: - Original Message - From: Liron Aravot lara...@redhat.com To: Ryan Groten ryan.gro...@stantec.com Cc: users@ovirt.org Sent: Sunday, July 12, 2015 5:44:28 PM Subject: Re: [ovirt-users] Concerns with increasing vdsTimeout value on engine? - Original Message - From: Ryan Groten ryan.gro...@stantec.com To: users@ovirt.org Sent: Friday, July 10, 2015 10:45:11 PM Subject: [ovirt-users] Concerns with increasing vdsTimeout value on engine? When I try to attach new direct lun disks, the scan takes a very long time to complete because of the number of pvs presented to my hosts (there is already a bug on this, related to the pvcreate command taking a very long time - https://bugzilla.redhat.com/show_bug.cgi?id=1217401 ) I discovered a workaround by setting the vdsTimeout value higher (it is 180 seconds by default). I changed it to 300 seconds and now the direct lun scan returns properly, but I’m hoping someone can warn me if this workaround is safe or if it’ll cause other potential issues? I made this change yesterday and so far so good. Hi, no serious issue can be caused by that. Keep in mind though that any other operation will have that amount of time to complete before failing on timeout - which will cause delays before failing (as the timeout was increased for all executions) when not everything is operational and up as expected (as in most of the time). I'd guess that a RFE could be opened to allow increasing the timeout of specific operations if a user want to do that. thanks, Liron. if you have HA vms and use power management (fencing), this might cause longer downtime for HA vms if host has network timeouts: the engine will wait for 3 network failures before trying to fence the host, so in case of timeouts, and increasing it to 5mins, you should expect 15mins before engine will decide host is non-responsive and fence, so if you have HA vm on this host, this will be the vm downtime as well, as the engine will restart HA vms only after fencing. you can read more on http://www.ovirt.org/Automatic_Fencing Even I am in a need where, I try to delete all the 256 gluster volume snapshots using a single gluster CLI command, and engine gets timed out. So, as Liron suggested it would be better if at VDSM verb level we are able to set timeout. That would be better option and caller needs to use the feature judicially :) Please open a RFE for being able to set operation timeout for single command call with description of use cases for which you would like to set the timeout. Piotr, I created an RFE BZ at https://bugzilla.redhat.com/show_bug.cgi?id=1242373. Thanks and Regards, Shubhendu Thanks, Ryan ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Storage question: single node gluster?
AFAIK it is not the best practice from Gluster. I tested it using single node and it should work fine. everything depend on your traffic and configuration. For example, Single node with only one NIc is not the same as with multiple nics Using only one HDD for both OS and volumes or SSD for OS and another SSD for volumes. so... it depends on the setup... Regards, __ Aharon Canan int phone - 8272036 ext phone - +97297692036 email - aca...@redhat.com - Original Message - From: Alan Murrell li...@murrell.ca To: users@ovirt.org Sent: Tuesday, July 14, 2015 7:18:31 AM Subject: [ovirt-users] Storage question: single node gluster? Hi There, This is not strictly oVirt, but is storage-related, so hopefully you will indulge me? Is there any detriment (performance or otherwise) in setting up a single-node glusterFS storage? I know glusterFS is designed to be used with multiple nodes, but I am wondering if there are any ill-effects in configuring current storage as a single-node cluster, with the idea of possibly adding future nodes in the future? Thanks! :-) -Alan ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
[ovirt-users] ovirt-Node + hosted engine question
Hi All. As I was perusing my e-mails from this list earlier today one that caught my attention was one that had to do with ovirt-node and hosted engine. It appeared as though it is possible to install hosted engine on a ovirt-node host, and indeed, when I installed ovirt-node into a VirtualBox VM to poke around, there is a hosted engine option in the menu where you can enter a URL for an ISO/pxe source for OS installtion. I just want to clarify the following questions: 1.) Is it possible to install ovirt-node, and then install a hosted engine? 2.) If the answer to 1.) is Yes, does it require some sort of NFS-enabled storage, or can you confgiure local storage on ovirt-node and install the engine to there? 3.) Is it possible to create NFS-enabled storage on ovirt-node? 4.) Can you install the hosted engine onto external NFS storage, then move/migrate it to local storage on ovirt-node? I am thinking of a lab situation where there is only one server, but gobs of RAM and storage. Running ovirt-node as the host would require fewer space resources (not that I would necessarily be hurting for space, but any extra I could squeeze out would not be unwelcome). Thanks! :-) -Alan ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Internal Engine Error while adding a new (distribute glusterfs) Storage Domain
Hi Konstantinos.
After having a look at the logs, it seems that the problem you have doesn't
relate directly to oVirt's support to a single Gluster replica, but for some
bug in that area. can you please attach the hole log files so we can open a
bug for this issue?
Thanks.
- Original Message -
From: Konstantinos Christidis kochr...@ekt.gr
To: users@ovirt.org
Sent: Monday, July 13, 2015 7:22:41 PM
Subject: Re: [ovirt-users] Internal Engine Error while adding a new (distribute
glusterfs) Storage Domain
The good news: there is an an option for this.
The bad news: Only replica 3 is supported. Other options are for
development purposes.
[root@hv00 ~]# cat /etc/vdsm/vdsm.conf
...
[gluster]
# Only replica 3 is supported, this configuration is for development.
# Value is comma separated. For example, to allow replica 1 and
# replica 3, use 1,3.
allowed_replica_counts = 1,3
...
https://bugzilla.redhat.com/show_bug.cgi?id=1238093
On 07/13/2015 05:08 PM, Konstantinos Christidis wrote:
Hello,
I created (through oVirt web) a GlusterFS distributed volume with four
bricks.
When I try to add a New Domain - GlusterFS Data I am getting
Error while executing action Add Storage Connection: Internal Engine
Error
and
Error validating master storage domain: ('MD read error',)
Full logs
engine.log - https://paste.kde.org/pefcwndgc/zamd2o/raw
vdsm.log - https://paste.kde.org/pxf91znwq/6mhrg3/raw
Gluster info/options - https://paste.kde.org/pjfauvisg/grfrvj/raw
(oVirt3.6/Centos7)
ps: My installation seems to work only with replica-3 oVirt Optimized
volumes. Every other combination fails with the error above.
Any help would be appreciated.
Thanks,
K.
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Re: [ovirt-users] ovirt-Node + hosted engine question
- Original Message - Hi All. As I was perusing my e-mails from this list earlier today one that caught my attention was one that had to do with ovirt-node and hosted engine. It appeared as though it is possible to install hosted engine on a ovirt-node host, and indeed, when I installed ovirt-node into a VirtualBox VM to poke around, there is a hosted engine option in the menu where you can enter a URL for an ISO/pxe source for OS installtion. Hey, I just want to clarify the following questions: 1.) Is it possible to install ovirt-node, and then install a hosted engine? Yes. 2.) If the answer to 1.) is Yes, does it require some sort of NFS-enabled storage, or can you confgiure local storage on ovirt-node and install the engine to there? Currently you can install hosted-engine on eitehr NFS or iSCSI storage 3.) Is it possible to create NFS-enabled storage on ovirt-node? No. Maybe you technically can, but I can just strongly discourage to do that. 4.) Can you install the hosted engine onto external NFS storage, then move/migrate it to local storage on ovirt-node? I strongly believe not. I am thinking of a lab situation where there is only one server, but gobs of RAM and storage. Running ovirt-node as the host would require fewer space resources (not that I would necessarily be hurting for space, but any extra I could squeeze out would not be unwelcome). Maybe this will work in future, when we can also configure some storage server on Node. But for now that is not supported. - fabian ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
[ovirt-users] Engine missing snapshot which is used by VM
Hello,
while analyzing a performance issue of a VM, I discovered the machine
uses a snapshot which is not referenced in Engine's database.
[oVirt shell (connected)]# list disks --vm-identifier bamboo
id : 4244c296-2b81-4dff-89ab-cd7f8847576a
name : bamboo_Disk1
[oVirt shell (connected)]# list snapshots --vm-identifier bamboo
id : 24a7de50-83ec-4e33-8f19-28b729422982
description: Active VM
Within the storage mount path I see two images:
root@prod-node-07 4244c296-2b81-4dff-89ab-cd7f8847576a]# ls
ddb30e69-73ac-454a-b9a0-b67c970958e9
ddb30e69-73ac-454a-b9a0-b67c970958e9.lease
ddb30e69-73ac-454a-b9a0-b67c970958e9.meta
e2b4e67a-616c-4be0-bb9b-6470ef9012ba
e2b4e67a-616c-4be0-bb9b-6470ef9012ba.lease
e2b4e67a-616c-4be0-bb9b-6470ef9012ba.meta
[root@prod-node-07 4244c296-2b81-4dff-89ab-cd7f8847576a]# cat *.meta
DOMAIN=fe7e2860-ab10-4010-9b80-2d40a0198594
VOLTYPE=INTERNAL
CTIME=1435308199
FORMAT=RAW
IMAGE=4244c296-2b81-4dff-89ab-cd7f8847576a
DISKTYPE=2
PUUID=----
LEGALITY=LEGAL
MTIME=0
POOL_UUID=
SIZE=1468006400
TYPE=SPARSE
DESCRIPTION=
EOF
DOMAIN=fe7e2860-ab10-4010-9b80-2d40a0198594
VOLTYPE=LEAF
CTIME=1435308200
FORMAT=COW
IMAGE=4244c296-2b81-4dff-89ab-cd7f8847576a
DISKTYPE=2
PUUID=ddb30e69-73ac-454a-b9a0-b67c970958e9
LEGALITY=LEGAL
MTIME=0
POOL_UUID=
DESCRIPTION={DiskAlias:bamboo_Disk1,DiskDescription:}
TYPE=SPARSE
SIZE=1468006400
EOF
Even if I have no clue why this has happened I would like to remove the
snapshot and return to a consistent state. What can I do now to solve
the problem?
--
Kind regards
Jan Siml
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[ovirt-users] oVirt 3.6.0 beta release postponed
Hi, in order to provide a better and more stable beta release, the schedule for oVirt 3.6.0 has been updated moving the beta release to August 3rd[1]. Following milestones have not yet been rescheduled. Thanks, [1] http://www.ovirt.org/OVirt_3.6_Release_Management#Key_Milestones -- Sandro Bonazzola Better technology. Faster innovation. Powered by community collaboration. See how it works at redhat.com ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] 3.5.3 node iso
On 09/07/15 20:28, Fabian Deutsch wrote: - Original Message - Any chance that 3.5.3 EL7 node will get a release soon? Hey Patrick, currently we are not publishing official isos to resources.ovirt.org, instead please use the ISOs build in our CI: Out of curiosity, why is still not 'official' ? Rgds Jonas ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
[ovirt-users] Create Template error
Hello, Clone VM or Make Template took several minutes and failed with this error Failed with error ENGINE and code5001 Full error engone log http://ur1.ca/n4iiu oVirt / CentOS7 and local PostgreSQL. Thanks, K. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
[ovirt-users] Where can I find the full document/description of ovirtsdk 3.5?
Where can I find the full document/description of ovirtsdk 3.5? Since help(xxx) in python is not very useful. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
