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1898
January 24th, 2017 05:00
ESX with ECSv3 NFS
Hello everybody,
I try to use ECSv3 via NFS as vCenter datastore. I have set nfs-options Send-/ReceiveBufferSize of course (VMware KB1007909). To clone/migrate a vm into ECS is slow but working fine. But always I try to migrate the vm back I get an error. The migration start, but 2-5 minutes later the process stops with error (sorry german vcenter):
Verlagern von virtuellen Maschinen Vorlage_HOTlinux_KLON
Von Datei /vmfs/volumes/b20b6853-c6a8bbc7/Vorlage_HOTlinux_KLON/Vorlage_HOTlinux_KLON.vmdk
verursachter Fehler.
VM-Dateien werden kopiert
24.01.2017 12:09:49
24.01.2017 12:09:49
24.01.2017 12:12:34
or
Vorlage_HOTlinux_KLON kann nicht geklont werden: Von Datei /vmfs/volumes/b20b6853-c6a8bbc7/Vorlage_HOTlinux_KLON/Vorlage_HOTlinux_KLON.vmdk
verursachter Fehler.
Fehler
24.01.2017 12:08:33
Virtuelle Maschine klonen
Vorlage_HOTlinux_KLON
An read/write test with 4GB files on command line was successfully:
[root@NT1esx10:/vmfs/volumes/b20b6853-c6a8bbc7] date; dd if=./test.img of=/dev/null bs=8192 count=524288; date
Tue Jan 24 12:16:18 UTC 2017
524288+0 records in
524288+0 records out
Tue Jan 24 12:28:46 UTC 2017
[root@NT1esx10:/vmfs/volumes/b20b6853-c6a8bbc7] date; dd if=/dev/zero of=test.img bs=8192 count=524288; date
Tue Jan 24 12:29:44 UTC 2017
524288+0 records in
524288+0 records out
Tue Jan 24 12:35:37 UTC 2017
Any suggestions?
Best regards
Micha
JasonCwik
281 Posts
0
January 24th, 2017 12:00
Hello Micha,
ECS's NFS service is intended for document archiving and other usecases where the content is typically WORM. Using it as a vCenter datastore will likely not work due to the higher latency of the ECS datastore. There are other products in the DellEMC portfolio such as ScaleIO that would be better suited to hosting vCenter datastores.
DMBrosig
11 Posts
0
January 24th, 2017 23:00
Hello Jason,
sorry but the ECS is designed for any kind of data, virtual machine too. What's better as migrate an old vm direct in the archive? Why I should use other than the vmware posibilities in vCenter? I will not run an vm on this datastore, but I like to copy to and back to the datastore and that should be possible.
By the way:
[root@NT1esx10:/vmfs/volumes/b20b6853-c6a8bbc7] cp -r Vorlage_HOTlinux_KLON /vmfs/volumes/VNX1_TEST_1
cp: read error: Input/output error