Storage network clarification
I'm having trouble setting up a dedicated storage network. I have a separate VLAN designated for storage, and configured separate IP addresses for each host that correspond to that subnet. I have tested this subnet extensively and it is working as expected. Prior to adding the hosts, I configured a storage network and configured the cluster to use that network for storage and not the ovirtmgmt network. I was hopping that this would be recognized when the hosts were added but it was not. I had to actually reconfigure the storage VLAN interface via oVirt "manage host networks" just to bring the host networks into compliance. The IP is configured directly on the bond0.<vlanid>, not on a bridge interface which I assume is correct since it is not a "VM" network. In this setup I was not able to activate any of the hosts due to VDSM gluster errors, I think it was because VDSM was trying to use the hostname/IP of the ovirtmgmt network. I manually set up the peers using "gluster peer probe" and I was able to activate the hosts but they were not using the storage network (tcpdump). I also tried adding DNS records for the storage network interfaces using different hostnames but gluster seemed to still consider the ovirtmgmt interface as the primary. With the hosts active, I couldn't create/activate any volumes until I changed the cluster network settings to use the ovirtmgmt network for storage. I ended up abandoning the dedicated storage subnet for the time being and I'm starting to wonder if running virtualization and gluster on the same hosts is intended to work this way. Assuming that it should work, what is the correct way to configure it? I can't find any docs that go in detail about storage networks. Is reverse DNS a factor? If I had a better understanding of what oVirt is expecting to see that would be helpful.
Hi Fil, this worked for me a couple of months back: http://lists.ovirt.org/pipermail/users/2015-November/036235.html I'll try to set this up again, and see if there are any issues. Which oVirt release are you running ? Ivan On 01/18/2016 02:56 PM, Fil Di Noto wrote:
I'm having trouble setting up a dedicated storage network.
I have a separate VLAN designated for storage, and configured separate IP addresses for each host that correspond to that subnet. I have tested this subnet extensively and it is working as expected.
Prior to adding the hosts, I configured a storage network and configured the cluster to use that network for storage and not the ovirtmgmt network. I was hopping that this would be recognized when the hosts were added but it was not. I had to actually reconfigure the storage VLAN interface via oVirt "manage host networks" just to bring the host networks into compliance. The IP is configured directly on the bond0.<vlanid>, not on a bridge interface which I assume is correct since it is not a "VM" network.
In this setup I was not able to activate any of the hosts due to VDSM gluster errors, I think it was because VDSM was trying to use the hostname/IP of the ovirtmgmt network. I manually set up the peers using "gluster peer probe" and I was able to activate the hosts but they were not using the storage network (tcpdump). I also tried adding DNS records for the storage network interfaces using different hostnames but gluster seemed to still consider the ovirtmgmt interface as the primary.
With the hosts active, I couldn't create/activate any volumes until I changed the cluster network settings to use the ovirtmgmt network for storage. I ended up abandoning the dedicated storage subnet for the time being and I'm starting to wonder if running virtualization and gluster on the same hosts is intended to work this way.
Assuming that it should work, what is the correct way to configure it? I can't find any docs that go in detail about storage networks. Is reverse DNS a factor? If I had a better understanding of what oVirt is expecting to see that would be helpful. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Thanks I will try this. I am running ovirt-engine 3.6.1.3-1.el7.centos In the configuration described, is oVirt able to manage gluster? I am confused because if oVirt knows the nodes by their ovirtmgmt network IP/hostname aren't all the VDSM commands going to fail? On Mon, Jan 18, 2016 at 6:39 AM, combuster <combuster@gmail.com> wrote:
Hi Fil,
this worked for me a couple of months back:
http://lists.ovirt.org/pipermail/users/2015-November/036235.html
I'll try to set this up again, and see if there are any issues. Which oVirt release are you running ?
Ivan
On 01/18/2016 02:56 PM, Fil Di Noto wrote:
I'm having trouble setting up a dedicated storage network.
I have a separate VLAN designated for storage, and configured separate IP addresses for each host that correspond to that subnet. I have tested this subnet extensively and it is working as expected.
Prior to adding the hosts, I configured a storage network and configured the cluster to use that network for storage and not the ovirtmgmt network. I was hopping that this would be recognized when the hosts were added but it was not. I had to actually reconfigure the storage VLAN interface via oVirt "manage host networks" just to bring the host networks into compliance. The IP is configured directly on the bond0.<vlanid>, not on a bridge interface which I assume is correct since it is not a "VM" network.
In this setup I was not able to activate any of the hosts due to VDSM gluster errors, I think it was because VDSM was trying to use the hostname/IP of the ovirtmgmt network. I manually set up the peers using "gluster peer probe" and I was able to activate the hosts but they were not using the storage network (tcpdump). I also tried adding DNS records for the storage network interfaces using different hostnames but gluster seemed to still consider the ovirtmgmt interface as the primary.
With the hosts active, I couldn't create/activate any volumes until I changed the cluster network settings to use the ovirtmgmt network for storage. I ended up abandoning the dedicated storage subnet for the time being and I'm starting to wonder if running virtualization and gluster on the same hosts is intended to work this way.
Assuming that it should work, what is the correct way to configure it? I can't find any docs that go in detail about storage networks. Is reverse DNS a factor? If I had a better understanding of what oVirt is expecting to see that would be helpful. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
oVirt is still managing the cluster via ovirtmgmt network. The same rule applies for tagging networks as VM networks, Live Migration networks etc. Gluster is no different, except that it involved a couple of manual steps for us to configure it. On 01/18/2016 03:53 PM, Fil Di Noto wrote:
Thanks I will try this. I am running ovirt-engine 3.6.1.3-1.el7.centos
In the configuration described, is oVirt able to manage gluster? I am confused because if oVirt knows the nodes by their ovirtmgmt network IP/hostname aren't all the VDSM commands going to fail?
On Mon, Jan 18, 2016 at 6:39 AM, combuster <combuster@gmail.com> wrote:
Hi Fil,
this worked for me a couple of months back:
http://lists.ovirt.org/pipermail/users/2015-November/036235.html
I'll try to set this up again, and see if there are any issues. Which oVirt release are you running ?
Ivan
On 01/18/2016 02:56 PM, Fil Di Noto wrote:
I'm having trouble setting up a dedicated storage network.
I have a separate VLAN designated for storage, and configured separate IP addresses for each host that correspond to that subnet. I have tested this subnet extensively and it is working as expected.
Prior to adding the hosts, I configured a storage network and configured the cluster to use that network for storage and not the ovirtmgmt network. I was hopping that this would be recognized when the hosts were added but it was not. I had to actually reconfigure the storage VLAN interface via oVirt "manage host networks" just to bring the host networks into compliance. The IP is configured directly on the bond0.<vlanid>, not on a bridge interface which I assume is correct since it is not a "VM" network.
In this setup I was not able to activate any of the hosts due to VDSM gluster errors, I think it was because VDSM was trying to use the hostname/IP of the ovirtmgmt network. I manually set up the peers using "gluster peer probe" and I was able to activate the hosts but they were not using the storage network (tcpdump). I also tried adding DNS records for the storage network interfaces using different hostnames but gluster seemed to still consider the ovirtmgmt interface as the primary.
With the hosts active, I couldn't create/activate any volumes until I changed the cluster network settings to use the ovirtmgmt network for storage. I ended up abandoning the dedicated storage subnet for the time being and I'm starting to wonder if running virtualization and gluster on the same hosts is intended to work this way.
Assuming that it should work, what is the correct way to configure it? I can't find any docs that go in detail about storage networks. Is reverse DNS a factor? If I had a better understanding of what oVirt is expecting to see that would be helpful. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
OK, setting up gluster on a dedicated network is easier this time around, mostly point and click adventure (setting everything up from scratch): - 4 NIC's, 2 bonds, one for ovirtmgmt and the other one for gluster - Tagged gluster network for gluster traffic - configured IP addresses without gateways on gluster dedicated bonds on both nodes - allowed_replica_counts=1,2,3 in gluster section within /etc/vdsm/vdsm.conf to allow replica 2 - added transport.socket.bind-address to /etc/glusterfs/glusterd.vol to force glusterd to listen only from gluster dedicated IP address - modified /etc/hosts so that the nodes can resolve each other by gluster dedicated hostnames (optional) - probed the peers by their gluster hostnames - created the volume in the same fashion (I've tried creating another one from oVirt webadmin and it works also) - oVirt picked it up and I was able to create gluster storage domain on this volume (+ optimized the volume for virt store) - tcpdump and iftop shows that replication is going through gluster dedicated interfaces One problem so far, creating preallocated disk images fails. It broke after zeroing out some 37GB of 40GB in total, but it's an intermittent issue (sometimes it fails earlier), I'm still poking around to find the culprit. Thin provisioning works. Bricks and volume are fine, as are gluster services. Bandwidth related issues from what I can see (large amount of net traffic during flushes, rpc_clnt_ping_timer_expired followed by sanlock renewal errors), but I'll report it as soon as I can confirm it's not a hardware/configuration related issue. vdsm.log:
bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,782::utils::716::Storage.Misc.excCmd::(watchCmd) FAILED: <err> = ["/usr/bin/dd: error writing '/rhev/data-center/90758579-cae7-4fdf-97e5-e8415db68c54/9cbc0f15-119e-4fe7-94ef-8bc84e0c8254/images/283ddfaa-7fc2-4bea-9acc-c8ff601110de/e3d135b2-a7c0-43d4-b3a5-04991cce73ae': Transport endpoint is not connected", "/usr/bin/dd: closing output file '/rhev/data-center/90758579-cae7-4fdf-97e5-e8415db68c54/9cbc0f15-119e-4fe7-94ef-8bc84e0c8254/images/283ddfaa-7fc2-4bea-9acc-c8ff601110de/e3d135b2-a7c0-43d4-b3a5-04991cce73ae': Transport endpoint is not connected"]; <rc> = 1 bf482d82-d8f9-442d-ba93-da5ec225c8c3::ERROR::2016-01-19 18:03:20,783::fileVolume::133::Storage.Volume::(_create) Unexpected error Traceback (most recent call last): File "/usr/share/vdsm/storage/fileVolume.py", line 129, in _create vars.task.aborting, sizeBytes) File "/usr/share/vdsm/storage/misc.py", line 350, in ddWatchCopy raise se.MiscBlockWriteException(dst, offset, size) MiscBlockWriteException: Internal block device write failure: u'name=/rhev/data-center/90758579-cae7-4fdf-97e5-e8415db68c54/9cbc0f15-119e-4fe7-94ef-8bc84e0c8254/images/283ddfaa-7fc2-4bea-9acc-c8ff601110de/e3d135b2-a7c0-43d4-b3a5-04991cce73ae, offset=0, size=42949672960' jsonrpc.Executor/7::DEBUG::2016-01-19 18:03:20,784::__init__::533::jsonrpc.JsonRpcServer::(_serveRequest) Return 'GlusterTask.list' in bridge with {'tasks': {}} bf482d82-d8f9-442d-ba93-da5ec225c8c3::ERROR::2016-01-19 18:03:20,790::volume::515::Storage.Volume::(create) Unexpected error Traceback (most recent call last): File "/usr/share/vdsm/storage/volume.py", line 476, in create initialSize=initialSize) File "/usr/share/vdsm/storage/fileVolume.py", line 134, in _create raise se.VolumesZeroingError(volPath) VolumesZeroingError: Cannot zero out volume: (u'/rhev/data-center/90758579-cae7-4fdf-97e5-e8415db68c54/9cbc0f15-119e-4fe7-94ef-8bc84e0c8254/images/283ddfaa-7fc2-4bea-9acc-c8ff601110de/e3d135b2-a7c0-43d4-b3a5-04991cce73ae',) bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,795::resourceManager::616::Storage.ResourceManager::(releaseResource) Trying to release resource '9cbc0f15-119e-4fe7-94ef-8bc84e0c8254_imageNS.283ddfaa-7fc2-4bea-9acc-c8ff601110de' bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,796::resourceManager::635::Storage.ResourceManager::(releaseResource) Released resource '9cbc0f15-119e-4fe7-94ef-8bc84e0c8254_imageNS.283ddfaa-7fc2-4bea-9acc-c8ff601110de' (0 active users) bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,796::resourceManager::641::Storage.ResourceManager::(releaseResource) Resource '9cbc0f15-119e-4fe7-94ef-8bc84e0c8254_imageNS.283ddfaa-7fc2-4bea-9acc-c8ff601110de' is free, finding out if anyone is waiting for it. bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,796::resourceManager::649::Storage.ResourceManager::(releaseResource) No one is waiting for resource '9cbc0f15-119e-4fe7-94ef-8bc84e0c8254_imageNS.283ddfaa-7fc2-4bea-9acc-c8ff601110de', Clearing records. bf482d82-d8f9-442d-ba93-da5ec225c8c3::ERROR::2016-01-19 18:03:20,797::task::866::Storage.TaskManager.Task::(_setError) Task=`bf482d82-d8f9-442d-ba93-da5ec225c8c3`::Unexpected error Traceback (most recent call last): File "/usr/share/vdsm/storage/task.py", line 873, in _run return fn(*args, **kargs) File "/usr/share/vdsm/storage/task.py", line 332, in run return self.cmd(*self.argslist, **self.argsdict) File "/usr/share/vdsm/storage/securable.py", line 77, in wrapper return method(self, *args, **kwargs) File "/usr/share/vdsm/storage/sp.py", line 1886, in createVolume initialSize=initialSize) File "/usr/share/vdsm/storage/sd.py", line 488, in createVolume initialSize=initialSize) File "/usr/share/vdsm/storage/volume.py", line 476, in create initialSize=initialSize) File "/usr/share/vdsm/storage/fileVolume.py", line 134, in _create raise se.VolumesZeroingError(volPath) VolumesZeroingError: Cannot zero out volume: (u'/rhev/data-center/90758579-cae7-4fdf-97e5-e8415db68c54/9cbc0f15-119e-4fe7-94ef-8bc84e0c8254/images/283ddfaa-7fc2-4bea-9acc-c8ff601110de/e3d135b2-a7c0-43d4-b3a5-04991cce73ae',) bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,798::task::885::Storage.TaskManager.Task::(_run) Task=`bf482d82-d8f9-442d-ba93-da5ec225c8c3`::Task._run: bf482d82-d8f9-442d-ba93-da5ec225c8c3 () {} failed - stopping task bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,798::task::1246::Storage.TaskManager.Task::(stop) Task=`bf482d82-d8f9-442d-ba93-da5ec225c8c3`::stopping in state running (force False) bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,798::task::993::Storage.TaskManager.Task::(_decref) Task=`bf482d82-d8f9-442d-ba93-da5ec225c8c3`::ref 1 aborting True bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,799::task::919::Storage.TaskManager.Task::(_runJobs) Task=`bf482d82-d8f9-442d-ba93-da5ec225c8c3`::aborting: Task is aborted: 'Cannot zero out volume' - code 374
On 01/18/2016 04:00 PM, combuster wrote:
oVirt is still managing the cluster via ovirtmgmt network. The same rule applies for tagging networks as VM networks, Live Migration networks etc. Gluster is no different, except that it involved a couple of manual steps for us to configure it.
On 01/18/2016 03:53 PM, Fil Di Noto wrote:
Thanks I will try this. I am running ovirt-engine 3.6.1.3-1.el7.centos
In the configuration described, is oVirt able to manage gluster? I am confused because if oVirt knows the nodes by their ovirtmgmt network IP/hostname aren't all the VDSM commands going to fail?
On Mon, Jan 18, 2016 at 6:39 AM, combuster <combuster@gmail.com> wrote:
Hi Fil,
this worked for me a couple of months back:
http://lists.ovirt.org/pipermail/users/2015-November/036235.html
I'll try to set this up again, and see if there are any issues. Which oVirt release are you running ?
Ivan
On 01/18/2016 02:56 PM, Fil Di Noto wrote:
I'm having trouble setting up a dedicated storage network.
I have a separate VLAN designated for storage, and configured separate IP addresses for each host that correspond to that subnet. I have tested this subnet extensively and it is working as expected.
Prior to adding the hosts, I configured a storage network and configured the cluster to use that network for storage and not the ovirtmgmt network. I was hopping that this would be recognized when the hosts were added but it was not. I had to actually reconfigure the storage VLAN interface via oVirt "manage host networks" just to bring the host networks into compliance. The IP is configured directly on the bond0.<vlanid>, not on a bridge interface which I assume is correct since it is not a "VM" network.
In this setup I was not able to activate any of the hosts due to VDSM gluster errors, I think it was because VDSM was trying to use the hostname/IP of the ovirtmgmt network. I manually set up the peers using "gluster peer probe" and I was able to activate the hosts but they were not using the storage network (tcpdump). I also tried adding DNS records for the storage network interfaces using different hostnames but gluster seemed to still consider the ovirtmgmt interface as the primary.
With the hosts active, I couldn't create/activate any volumes until I changed the cluster network settings to use the ovirtmgmt network for storage. I ended up abandoning the dedicated storage subnet for the time being and I'm starting to wonder if running virtualization and gluster on the same hosts is intended to work this way.
Assuming that it should work, what is the correct way to configure it? I can't find any docs that go in detail about storage networks. Is reverse DNS a factor? If I had a better understanding of what oVirt is expecting to see that would be helpful. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Increasing network ping timeout and lowering the number of io threads helped. Disk image gets created, but during that time nodes are pretty much unresponsive. I should've expected that on my setup... In any case, I hope this helps... Ivan On 01/19/2016 06:43 PM, combuster wrote:
OK, setting up gluster on a dedicated network is easier this time around, mostly point and click adventure (setting everything up from scratch):
- 4 NIC's, 2 bonds, one for ovirtmgmt and the other one for gluster - Tagged gluster network for gluster traffic - configured IP addresses without gateways on gluster dedicated bonds on both nodes - allowed_replica_counts=1,2,3 in gluster section within /etc/vdsm/vdsm.conf to allow replica 2 - added transport.socket.bind-address to /etc/glusterfs/glusterd.vol to force glusterd to listen only from gluster dedicated IP address - modified /etc/hosts so that the nodes can resolve each other by gluster dedicated hostnames (optional) - probed the peers by their gluster hostnames - created the volume in the same fashion (I've tried creating another one from oVirt webadmin and it works also) - oVirt picked it up and I was able to create gluster storage domain on this volume (+ optimized the volume for virt store) - tcpdump and iftop shows that replication is going through gluster dedicated interfaces
One problem so far, creating preallocated disk images fails. It broke after zeroing out some 37GB of 40GB in total, but it's an intermittent issue (sometimes it fails earlier), I'm still poking around to find the culprit. Thin provisioning works. Bricks and volume are fine, as are gluster services. Bandwidth related issues from what I can see (large amount of net traffic during flushes, rpc_clnt_ping_timer_expired followed by sanlock renewal errors), but I'll report it as soon as I can confirm it's not a hardware/configuration related issue.
vdsm.log:
bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,782::utils::716::Storage.Misc.excCmd::(watchCmd) FAILED: <err> = ["/usr/bin/dd: error writing '/rhev/data-center/90758579-cae7-4fdf-97e5-e8415db68c54/9cbc0f15-119e-4fe7-94ef-8bc84e0c8254/images/283ddfaa-7fc2-4bea-9acc-c8ff601110de/e3d135b2-a7c0-43d4-b3a5-04991cce73ae': Transport endpoint is not connected", "/usr/bin/dd: closing output file '/rhev/data-center/90758579-cae7-4fdf-97e5-e8415db68c54/9cbc0f15-119e-4fe7-94ef-8bc84e0c8254/images/283ddfaa-7fc2-4bea-9acc-c8ff601110de/e3d135b2-a7c0-43d4-b3a5-04991cce73ae': Transport endpoint is not connected"]; <rc> = 1 bf482d82-d8f9-442d-ba93-da5ec225c8c3::ERROR::2016-01-19 18:03:20,783::fileVolume::133::Storage.Volume::(_create) Unexpected error Traceback (most recent call last): File "/usr/share/vdsm/storage/fileVolume.py", line 129, in _create vars.task.aborting, sizeBytes) File "/usr/share/vdsm/storage/misc.py", line 350, in ddWatchCopy raise se.MiscBlockWriteException(dst, offset, size) MiscBlockWriteException: Internal block device write failure: u'name=/rhev/data-center/90758579-cae7-4fdf-97e5-e8415db68c54/9cbc0f15-119e-4fe7-94ef-8bc84e0c8254/images/283ddfaa-7fc2-4bea-9acc-c8ff601110de/e3d135b2-a7c0-43d4-b3a5-04991cce73ae, offset=0, size=42949672960' jsonrpc.Executor/7::DEBUG::2016-01-19 18:03:20,784::__init__::533::jsonrpc.JsonRpcServer::(_serveRequest) Return 'GlusterTask.list' in bridge with {'tasks': {}} bf482d82-d8f9-442d-ba93-da5ec225c8c3::ERROR::2016-01-19 18:03:20,790::volume::515::Storage.Volume::(create) Unexpected error Traceback (most recent call last): File "/usr/share/vdsm/storage/volume.py", line 476, in create initialSize=initialSize) File "/usr/share/vdsm/storage/fileVolume.py", line 134, in _create raise se.VolumesZeroingError(volPath) VolumesZeroingError: Cannot zero out volume: (u'/rhev/data-center/90758579-cae7-4fdf-97e5-e8415db68c54/9cbc0f15-119e-4fe7-94ef-8bc84e0c8254/images/283ddfaa-7fc2-4bea-9acc-c8ff601110de/e3d135b2-a7c0-43d4-b3a5-04991cce73ae',) bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,795::resourceManager::616::Storage.ResourceManager::(releaseResource) Trying to release resource '9cbc0f15-119e-4fe7-94ef-8bc84e0c8254_imageNS.283ddfaa-7fc2-4bea-9acc-c8ff601110de' bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,796::resourceManager::635::Storage.ResourceManager::(releaseResource) Released resource '9cbc0f15-119e-4fe7-94ef-8bc84e0c8254_imageNS.283ddfaa-7fc2-4bea-9acc-c8ff601110de' (0 active users) bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,796::resourceManager::641::Storage.ResourceManager::(releaseResource) Resource '9cbc0f15-119e-4fe7-94ef-8bc84e0c8254_imageNS.283ddfaa-7fc2-4bea-9acc-c8ff601110de' is free, finding out if anyone is waiting for it. bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,796::resourceManager::649::Storage.ResourceManager::(releaseResource) No one is waiting for resource '9cbc0f15-119e-4fe7-94ef-8bc84e0c8254_imageNS.283ddfaa-7fc2-4bea-9acc-c8ff601110de', Clearing records. bf482d82-d8f9-442d-ba93-da5ec225c8c3::ERROR::2016-01-19 18:03:20,797::task::866::Storage.TaskManager.Task::(_setError) Task=`bf482d82-d8f9-442d-ba93-da5ec225c8c3`::Unexpected error Traceback (most recent call last): File "/usr/share/vdsm/storage/task.py", line 873, in _run return fn(*args, **kargs) File "/usr/share/vdsm/storage/task.py", line 332, in run return self.cmd(*self.argslist, **self.argsdict) File "/usr/share/vdsm/storage/securable.py", line 77, in wrapper return method(self, *args, **kwargs) File "/usr/share/vdsm/storage/sp.py", line 1886, in createVolume initialSize=initialSize) File "/usr/share/vdsm/storage/sd.py", line 488, in createVolume initialSize=initialSize) File "/usr/share/vdsm/storage/volume.py", line 476, in create initialSize=initialSize) File "/usr/share/vdsm/storage/fileVolume.py", line 134, in _create raise se.VolumesZeroingError(volPath) VolumesZeroingError: Cannot zero out volume: (u'/rhev/data-center/90758579-cae7-4fdf-97e5-e8415db68c54/9cbc0f15-119e-4fe7-94ef-8bc84e0c8254/images/283ddfaa-7fc2-4bea-9acc-c8ff601110de/e3d135b2-a7c0-43d4-b3a5-04991cce73ae',) bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,798::task::885::Storage.TaskManager.Task::(_run) Task=`bf482d82-d8f9-442d-ba93-da5ec225c8c3`::Task._run: bf482d82-d8f9-442d-ba93-da5ec225c8c3 () {} failed - stopping task bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,798::task::1246::Storage.TaskManager.Task::(stop) Task=`bf482d82-d8f9-442d-ba93-da5ec225c8c3`::stopping in state running (force False) bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,798::task::993::Storage.TaskManager.Task::(_decref) Task=`bf482d82-d8f9-442d-ba93-da5ec225c8c3`::ref 1 aborting True bf482d82-d8f9-442d-ba93-da5ec225c8c3::DEBUG::2016-01-19 18:03:20,799::task::919::Storage.TaskManager.Task::(_runJobs) Task=`bf482d82-d8f9-442d-ba93-da5ec225c8c3`::aborting: Task is aborted: 'Cannot zero out volume' - code 374
On 01/18/2016 04:00 PM, combuster wrote:
oVirt is still managing the cluster via ovirtmgmt network. The same rule applies for tagging networks as VM networks, Live Migration networks etc. Gluster is no different, except that it involved a couple of manual steps for us to configure it.
On 01/18/2016 03:53 PM, Fil Di Noto wrote:
Thanks I will try this. I am running ovirt-engine 3.6.1.3-1.el7.centos
In the configuration described, is oVirt able to manage gluster? I am confused because if oVirt knows the nodes by their ovirtmgmt network IP/hostname aren't all the VDSM commands going to fail?
On Mon, Jan 18, 2016 at 6:39 AM, combuster <combuster@gmail.com> wrote:
Hi Fil,
this worked for me a couple of months back:
http://lists.ovirt.org/pipermail/users/2015-November/036235.html
I'll try to set this up again, and see if there are any issues. Which oVirt release are you running ?
Ivan
On 01/18/2016 02:56 PM, Fil Di Noto wrote:
I'm having trouble setting up a dedicated storage network.
I have a separate VLAN designated for storage, and configured separate IP addresses for each host that correspond to that subnet. I have tested this subnet extensively and it is working as expected.
Prior to adding the hosts, I configured a storage network and configured the cluster to use that network for storage and not the ovirtmgmt network. I was hopping that this would be recognized when the hosts were added but it was not. I had to actually reconfigure the storage VLAN interface via oVirt "manage host networks" just to bring the host networks into compliance. The IP is configured directly on the bond0.<vlanid>, not on a bridge interface which I assume is correct since it is not a "VM" network.
In this setup I was not able to activate any of the hosts due to VDSM gluster errors, I think it was because VDSM was trying to use the hostname/IP of the ovirtmgmt network. I manually set up the peers using "gluster peer probe" and I was able to activate the hosts but they were not using the storage network (tcpdump). I also tried adding DNS records for the storage network interfaces using different hostnames but gluster seemed to still consider the ovirtmgmt interface as the primary.
With the hosts active, I couldn't create/activate any volumes until I changed the cluster network settings to use the ovirtmgmt network for storage. I ended up abandoning the dedicated storage subnet for the time being and I'm starting to wonder if running virtualization and gluster on the same hosts is intended to work this way.
Assuming that it should work, what is the correct way to configure it? I can't find any docs that go in detail about storage networks. Is reverse DNS a factor? If I had a better understanding of what oVirt is expecting to see that would be helpful. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
On 01/18/2016 07:26 PM, Fil Di Noto wrote:
I'm having trouble setting up a dedicated storage network.
I have a separate VLAN designated for storage, and configured separate IP addresses for each host that correspond to that subnet. I have tested this subnet extensively and it is working as expected.
Prior to adding the hosts, I configured a storage network and configured the cluster to use that network for storage and not the ovirtmgmt network. I was hopping that this would be recognized when the hosts were added but it was not. I had to actually reconfigure the storage VLAN interface via oVirt "manage host networks" just to bring the host networks into compliance. The IP is configured directly on the bond0.<vlanid>, not on a bridge interface which I assume is correct since it is not a "VM" network.
In this setup I was not able to activate any of the hosts due to VDSM gluster errors, I think it was because VDSM was trying to use the hostname/IP of the ovirtmgmt network. I manually set up the peers using "gluster peer probe" and I was able to activate the hosts but they were not using the storage network (tcpdump). I also tried adding DNS records for the storage network interfaces using different hostnames but gluster seemed to still consider the ovirtmgmt interface as the primary.
With the hosts active, I couldn't create/activate any volumes until I changed the cluster network settings to use the ovirtmgmt network for storage. I ended up abandoning the dedicated storage subnet for the time being and I'm starting to wonder if running virtualization and gluster on the same hosts is intended to work this way.
Assuming that it should work, what is the correct way to configure it? I can't find any docs that go in detail about storage networks. Is reverse DNS a factor? If I had a better understanding of what oVirt is expecting to see that would be helpful.
The steps to make sure gluster uses separate network for data traffic : 1. Create a logical network (non-VM), and mark it's role as "Gluster" 2. After adding the host via the ovirtmgmt hostname/ ip address, assign this gluster network to your interface (with the storage sub-net) This step will initiate a peer probe of the host with this additonal ip address. 3. When creating a volume after an interface/bond is tagged with gluster network, the bricks are added using the gluster n/w's ip address. Now when clients connect to the volume, traffic is routed via your gluster network that's used by bricks. What were the vdsm gluster errors when you activated the gluster hosts? Could you attach the earlier vdsm log?
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Hi Sahina, Le 19/01/2016 07:02, Sahina Bose a écrit :
The steps to make sure gluster uses separate network for data traffic :
1. Create a logical network (non-VM), and mark it's role as "Gluster" 2. After adding the host via the ovirtmgmt hostname/ ip address, assign this gluster network to your interface (with the storage sub-net) This step will initiate a peer probe of the host with this additonal ip address.
3. When creating a volume after an interface/bond is tagged with gluster network, the bricks are added using the gluster n/w's ip address. Now when clients connect to the volume, traffic is routed via your gluster network that's used by bricks.
Does that mean that there's no way to reach this goal with an existing volume, previously created, and that was (alas) using the management network? -- Nicolas ECARNOT
On 01/19/2016 12:37 PM, Nicolas Ecarnot wrote:
Hi Sahina,
Le 19/01/2016 07:02, Sahina Bose a écrit :
The steps to make sure gluster uses separate network for data traffic :
1. Create a logical network (non-VM), and mark it's role as "Gluster" 2. After adding the host via the ovirtmgmt hostname/ ip address, assign this gluster network to your interface (with the storage sub-net) This step will initiate a peer probe of the host with this additonal ip address.
3. When creating a volume after an interface/bond is tagged with gluster network, the bricks are added using the gluster n/w's ip address. Now when clients connect to the volume, traffic is routed via your gluster network that's used by bricks.
Does that mean that there's no way to reach this goal with an existing volume, previously created, and that was (alas) using the management network?
There's some ongoing work to replace network used by brick - http://review.gluster.org/#/c/12250/ and https://gerrit.ovirt.org/#/c/51685/ [+Kaushal, Anuradha for further inputs and if there's any manual workaround possible]
Thanks I will add those steps to my notes and try again some time in the future. Trying to move storage network functions from ovirtmgmt to a dedicated logical network for an existing gluster volume did not go well for me. I did not put much effort into recovering, but I lost the storage domain completely. I did not collect any logs because I was pressed for time. I am finding it easier to manage gluster outside of ovirt for now. Without knowing how VDSM is going to try to approach a task it becomes more time consuming (and sometimes destructive) to work with VDSM than to just do things manually. On Tue, Jan 19, 2016 at 12:44 AM, Sahina Bose <sabose@redhat.com> wrote:
On 01/19/2016 12:37 PM, Nicolas Ecarnot wrote:
Hi Sahina,
Le 19/01/2016 07:02, Sahina Bose a écrit :
The steps to make sure gluster uses separate network for data traffic :
1. Create a logical network (non-VM), and mark it's role as "Gluster" 2. After adding the host via the ovirtmgmt hostname/ ip address, assign this gluster network to your interface (with the storage sub-net) This step will initiate a peer probe of the host with this additonal ip address.
3. When creating a volume after an interface/bond is tagged with gluster network, the bricks are added using the gluster n/w's ip address. Now when clients connect to the volume, traffic is routed via your gluster network that's used by bricks.
Does that mean that there's no way to reach this goal with an existing volume, previously created, and that was (alas) using the management network?
There's some ongoing work to replace network used by brick - http://review.gluster.org/#/c/12250/ and https://gerrit.ovirt.org/#/c/51685/ [+Kaushal, Anuradha for further inputs and if there's any manual workaround possible]
participants (4)
-
combuster -
Fil Di Noto -
Nicolas Ecarnot -
Sahina Bose