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Re: Disk latency is very high, time taken to copy 1M file is > 10s
by Strahil 03 Jul '19

03 Jul '19

Mount your disk (/mnt/) and try the following command(taken from the previous output): dd if=/dev/zero of=/mnt/small.file bs=512 count=2050 oflag=direct How much time does it take? Best Regards, Strahil NikolovOn Jul 3, 2019 13:27, PS Kazi <faruk.apsara(a)gmail.com> wrote: > > hi, > I am using HDD : Toshiba 7200 RPM, Data transfer Rate 150MB/s, Interface 6Gb/s. > But Hyper-converged configuration stopped with error msg: Disk latency is very high, time taken to copy 1M file is > 10s > Please help me to stop this error. > ________________________________________________________________________________________ > TASK [gluster.features/roles/gluster_hci : Check if time taken to copy 1M file (512B chunks) is < 10s] *** > failed: [ov-node-1.hci.com -> ov-node-1.hci.com] (item=11.9508) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/engine/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:11.966178", "end": "2019-07-03 15:28:00.162101", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/engine/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/engine", "rc": 0, "start": "2019-07-03 15:27:48.195923", "stderr": "", "stderr_lines": [], "stdout": "11.9508", "stdout_lines": ["11.9508"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} > failed: [ov-node-1.hci.com -> ov-node-1.hci.com] (item=11.5604) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/data/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:11.574648", "end": "2019-07-03 15:28:14.926805", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/data/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/data", "rc": 0, "start": "2019-07-03 15:28:03.352157", "stderr": "", "stderr_lines": [], "stdout": "11.5604", "stdout_lines": ["11.5604"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} > failed: [ov-node-1.hci.com -> ov-node-1.hci.com] (item=10.9126) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/vmstore/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:10.927547", "end": "2019-07-03 15:28:29.053149", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/vmstore/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/vmstore", "rc": 0, "start": "2019-07-03 15:28:18.125602", "stderr": "", "stderr_lines": [], "stdout": "10.9126", "stdout_lines": ["10.9126"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} > failed: [ov-node-3.hci.com -> ov-node-1.hci.com] (item=12.7177) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/engine/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:12.805771", "end": "2019-07-03 15:28:01.029631", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/engine/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/engine", "rc": 0, "start": "2019-07-03 15:27:48.223860", "stderr": "", "stderr_lines": [], "stdout": "12.7177", "stdout_lines": ["12.7177"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} > failed: [ov-node-3.hci.com -> ov-node-1.hci.com] (item=11.8554) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/data/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:11.883952", "end": "2019-07-03 15:28:15.810562", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/data/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/data", "rc": 0, "start": "2019-07-03 15:28:03.926610", "stderr": "", "stderr_lines": [], "stdout": "11.8554", "stdout_lines": ["11.8554"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} > failed: [ov-node-3.hci.com -> ov-node-1.hci.com] (item=11.6409) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/vmstore/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:11.679377", "end": "2019-07-03 15:28:30.376413", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/vmstore/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/vmstore", "rc": 0, "start": "2019-07-03 15:28:18.697036", "stderr": "", "stderr_lines": [], "stdout": "11.6409", "stdout_lines": ["11.6409"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} > failed: [ov-node-2.hci.com -> ov-node-1.hci.com] (item=12.607) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/engine/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:12.699951", "end": "2019-07-03 15:28:00.918459", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/engine/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/engine", "rc": 0, "start": "2019-07-03 15:27:48.218508", "stderr": "", "stderr_lines": [], "stdout": "12.607", "stdout_lines": ["12.607"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} > failed: [ov-node-2.hci.com -> ov-node-1.hci.com] (item=11.9233) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/data/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:11.961081", "end": "2019-07-03 15:28:15.837654", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/data/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/data", "rc": 0, "start": "2019-07-03 15:28:03.876573", "stderr": "", "stderr_lines": [], "stdout": "11.9233", "stdout_lines": ["11.9233"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} > failed: [ov-node-2.hci.com -> ov-node-1.hci.com] (item=11.5126) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/vmstore/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:11.556528", "end": "2019-07-03 15:28:30.520190", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/vmstore/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/vmstore", "rc": 0, "start": "2019-07-03 15:28:18.963662", "stderr": "", "stderr_lines": [], "stdout": "11.5126", "stdout_lines": ["11.5126"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} > ________________________________________________________________________________________ > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/site/privacy-policy/ > oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ > List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/4EBXRAJMQ75TP…

1 0

Re: Hosted Engine Deploy - Error at the end... [NFS ?]
by Strahil 03 Jul '19

03 Jul '19

Have you checked if the permissions are 36:36 on the NFS side ? Beet Regards, Strahil NikolovOn Jul 3, 2019 12:04, csi-laser(a)cisco.com wrote: > > Hi, > While Trying to Deploy Hosted Engine, I'm stuck on Stage 4. Here is the error : > > [ INFO ] TASK [ovirt.hosted_engine_setup : Fetch Datacenter name] > [ INFO ] ok: [localhost] > [ INFO ] TASK [ovirt.hosted_engine_setup : Add NFS storage domain] > [ ERROR ] Verify permission settings on the specified storage path.]". HTTP response code is 400. > [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false, "msg": "Fault reason is \"Operation Failed\". Fault detail is \"[Permission settings on the specified path do not allow access to the storage.\nVerify permission settings on the specified storage path.]\". HTTP response code is 400."} > > But, it's very strange, because, when I'm trying to mount this NFS share manually, It's working.... > So what am I doing wrong here ? > > Here is the "Storage Connection" - 8.45.119.16:/ovirt_engine > Mount option is blanked > NFS Version is "v3" > > Thanks in advance ! > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/site/privacy-policy/ > oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ > List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/4DPEX6M5PH7Y3…

1 0

Using a synology as an nfs storage
by Andy Michielsen 03 Jul '19

03 Jul '19

Hello, I'm setting up a 3 node cluster with the ovirtnode iso and a seperate server with the engine on and a synology for nfs storage. I have done my configuration and I'm able to mount the share manually on the node with a command. Also on the server with the engine on I can mount it manually. But when I want to do it through the webinterface to add a data domain it say the permissions are wrong. Any idea's on how to figure this out ? Kind regards.

7 11

Disk latency is very high, time taken to copy 1M file is > 10s
by PS Kazi 03 Jul '19

03 Jul '19

hi, I am using HDD : Toshiba 7200 RPM, Data transfer Rate 150MB/s, Interface 6Gb/s. But Hyper-converged configuration stopped with error msg: Disk latency is very high, time taken to copy 1M file is > 10s Please help me to stop this error. ________________________________________________________________________________________ TASK [gluster.features/roles/gluster_hci : Check if time taken to copy 1M file (512B chunks) is < 10s] *** failed: [ov-node-1.hci.com -> ov-node-1.hci.com] (item=11.9508) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/engine/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:11.966178", "end": "2019-07-03 15:28:00.162101", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/engine/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/engine", "rc": 0, "start": "2019-07-03 15:27:48.195923", "stderr": "", "stderr_lines": [], "stdout": "11.9508", "stdout_lines": ["11.9508"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} failed: [ov-node-1.hci.com -> ov-node-1.hci.com] (item=11.5604) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/data/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:11.574648", "end": "2019-07-03 15:28:14.926805", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/data/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/data", "rc": 0, "start": "2019-07-03 15:28:03.352157", "stderr": "", "stderr_lines": [], "stdout": "11.5604", "stdout_lines": ["11.5604"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} failed: [ov-node-1.hci.com -> ov-node-1.hci.com] (item=10.9126) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/vmstore/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:10.927547", "end": "2019-07-03 15:28:29.053149", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/vmstore/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/vmstore", "rc": 0, "start": "2019-07-03 15:28:18.125602", "stderr": "", "stderr_lines": [], "stdout": "10.9126", "stdout_lines": ["10.9126"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} failed: [ov-node-3.hci.com -> ov-node-1.hci.com] (item=12.7177) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/engine/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:12.805771", "end": "2019-07-03 15:28:01.029631", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/engine/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/engine", "rc": 0, "start": "2019-07-03 15:27:48.223860", "stderr": "", "stderr_lines": [], "stdout": "12.7177", "stdout_lines": ["12.7177"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} failed: [ov-node-3.hci.com -> ov-node-1.hci.com] (item=11.8554) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/data/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:11.883952", "end": "2019-07-03 15:28:15.810562", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/data/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/data", "rc": 0, "start": "2019-07-03 15:28:03.926610", "stderr": "", "stderr_lines": [], "stdout": "11.8554", "stdout_lines": ["11.8554"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} failed: [ov-node-3.hci.com -> ov-node-1.hci.com] (item=11.6409) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/vmstore/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:11.679377", "end": "2019-07-03 15:28:30.376413", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/vmstore/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/vmstore", "rc": 0, "start": "2019-07-03 15:28:18.697036", "stderr": "", "stderr_lines": [], "stdout": "11.6409", "stdout_lines": ["11.6409"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} failed: [ov-node-2.hci.com -> ov-node-1.hci.com] (item=12.607) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/engine/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:12.699951", "end": "2019-07-03 15:28:00.918459", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/engine/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/engine", "rc": 0, "start": "2019-07-03 15:27:48.218508", "stderr": "", "stderr_lines": [], "stdout": "12.607", "stdout_lines": ["12.607"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} failed: [ov-node-2.hci.com -> ov-node-1.hci.com] (item=11.9233) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/data/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:11.961081", "end": "2019-07-03 15:28:15.837654", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/data/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/data", "rc": 0, "start": "2019-07-03 15:28:03.876573", "stderr": "", "stderr_lines": [], "stdout": "11.9233", "stdout_lines": ["11.9233"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} failed: [ov-node-2.hci.com -> ov-node-1.hci.com] (item=11.5126) => {"ansible_loop_var": "item", "changed": false, "item": {"ansible_loop_var": "item", "changed": true, "cmd": "dd if=/dev/zero of=/mnt/tmp/vmstore/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "delta": "0:00:11.556528", "end": "2019-07-03 15:28:30.520190", "failed": false, "invocation": {"module_args": {"_raw_params": "dd if=/dev/zero of=/mnt/tmp/vmstore/small.file bs=512 count=2050 oflag=direct 2>&1 |\n awk '/copied/{print $(NF-3)}'\n", "_uses_shell": true, "argv": null, "chdir": null, "creates": null, "executable": null, "removes": null, "stdin": null, "stdin_add_newline": true, "strip_empty_ends": true, "warn": true}}, "item": "/mnt/tmp/vmstore", "rc": 0, "start": "2019-07-03 15:28:18.963662", "stderr": "", "stderr_lines": [], "stdout": "11.5126", "stdout_lines": ["11.5126"]}, "msg": "Disk latency is very high, time taken to copy 1M file is > 10s"} ________________________________________________________________________________________

2 2

Hosted Engine Deploy - Error at the end... [NFS ?]
by csi-laser＠cisco.com 03 Jul '19

03 Jul '19

Hi, While Trying to Deploy Hosted Engine, I'm stuck on Stage 4. Here is the error : [ INFO ] TASK [ovirt.hosted_engine_setup : Fetch Datacenter name] [ INFO ] ok: [localhost] [ INFO ] TASK [ovirt.hosted_engine_setup : Add NFS storage domain] [ ERROR ] Verify permission settings on the specified storage path.]". HTTP response code is 400. [ ERROR ] fatal: [localhost]: FAILED! => {"changed": false, "msg": "Fault reason is \"Operation Failed\". Fault detail is \"[Permission settings on the specified path do not allow access to the storage.\nVerify permission settings on the specified storage path.]\". HTTP response code is 400."} But, it's very strange, because, when I'm trying to mount this NFS share manually, It's working.... So what am I doing wrong here ? Here is the "Storage Connection" - 8.45.119.16:/ovirt_engine Mount option is blanked NFS Version is "v3" Thanks in advance !

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network performance issues
by Guy Brodny 02 Jul '19

02 Jul '19

Hello. we have installed Ovirt on HPE ProLiant XL270d Gen10. The server is installed with 2 * Intel(R) Xeon(R) Gold 6154 CPU @ 3.00GHz, 1.5T Ram, 23T Local SSD, 4 Nvidia V100 32GB GPU and 2* Mellanox Technologies MT27800 Family [ConnectX-5] The Mellanox card are 2 100Gbit DualPort each connected with a single 100Gbit port to a Mellanox 100Gbit switch which has access to a 16GByte storage server. MTU is set to 9000 for jumbo packets. Running our application on a VM created on top of the server is having lower network performance vs the host. I tried both normal ovirt network driver, using Virtual Function and PCI-passthrough moving one of the Mellanox card directly to the VM but i never get the same result as on the host. I also tried allocating the numa bush directly to the VM but it doesnt improve the results. Im testing using FIO to perform sequential reads from the storage, this is the command we run both on the host and the VM. sqream@host-3-171 /media/StorONE1/tpch10t_for_4.0/logs/192.168.3.171_5000 $ fio --randrepeat=1 --ioengine=sync --direct=1 --gtod_reduce=1 --name=test --filename=/media/StorONE3/t1e1s1111t221www22.file --bs=2m --iodepth=24 --size=25G --numjobs=14 --readwrite=read --rwmixread=100 Run status group 0 (all jobs): READ: bw=3919MiB/s (4109MB/s), 280MiB/s-314MiB/s (294MB/s-329MB/s), io=350GiB (376GB), run=81630-91459msec Before starting Ovirt i measured 7.5GB/sec on the host running the same FIO command. are there any optimization i should perform to make sure the vguest i getting the best possible network performance, im mostly stressed about GPFS performance as this is our main filesystem. On the same time running the test on another host not running Ovirt i can still get the 7.9GB/sec. appreciate any comments or suggestions. Kind Regards, *Guy Brodny* Cloud Architecture & DevOps Manager | SQream M: +972-54-2279528 sqream.com <http://www.sqream.com/> | Linkedin <https://www.linkedin.com/company/sqream_/?originalSubdomain=il>| Twitter <https://twitter.com/SQreamTech?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwg…>

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is it possible to convert exsi vm into ovirt vm
by Crazy Ayansh 02 Jul '19

02 Jul '19

Hi, How we can convert exsi vms into ovirt vm without vcenter. Thanks Shashank

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oVirt node 4.3.4 stable can't deploy hosted engine to iscsi target all available LUNs used
by Mitja Pirih 02 Jul '19

02 Jul '19

Hi, I am new to oVirt, coming from XenServer platform, so please be patient with me. After a successful install of latest stable oVirt node (ovirt-node-ng-installer-4.3.4-2019061016.el7.iso) I am having troubles deploying hosted engine to an iscsi target over Cockpit. I have a couple of iscsi targets available on two different storage platforms (Synology DS418, Lenovo DE2000H). After retrieving iscsi Target list all LUNs get automatically "connected" by "Target list scan" and shown as used on LUNs list. I can reproduce this every single time. On storage system I can also see, that all LUNs get connected by the initial scan. As a result I an unable to continue the deployment as there are no LUNs available. Is this a normal behavior? What would you suggest me to do? Thanks.

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Adding a custom fence agent on 4.3.4
by Matteo 02 Jul '19

02 Jul '19

Hi, I'm trying to add a custom fence agent for my test deployment on hetzner. Have written a small fence_hetzner_robot script which works ok from cli and installed on every ovirt node. Then added with engine_config in this way: # engine-config -s CustomVdsFenceType="hetzner_robot" But does not show up in fence agents list under host pm configuration. I'm missing something? thanks! Matteo PS: Also tried to set up an empty param mapping, just to test # engine-config -s CustomVdsFenceOptionMapping="hetzner_robot:" but still nothing.

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SPICE and VNC native
by kim.kargaard＠noroff.no 02 Jul '19

02 Jul '19

Hi, We are running ovirt 4.3. The engine is on a bare metal machine and the hosts are running on Centos 7. When installing the engine, I set it to be the webproxy. When I create a new vm, I select both SPICE+VNC. When clicking on the console I only have the option for SPICE native, not for the HTML option. For VNC I have both options and the HTML option can be selected and works. But, this is also the only option that works. VNC Native as well as SPICE Native do not work. I have tried using both remote viewer on Mac and a VNC client on a Windows machine and neither will actually open the VM. I would really also like the SPICE HTML option to exist, but it does not. The enable SPICE proxy in the Console selection is greyed out. When I open in remoteviewer (Mac) I get Unable to connect to the graphic server. Any suggestions? Kim

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