Hi all,
After updating ESX Host to VMware ESXi, 6.5.0, 13635690 my iSCSI Datastore is inactive and VM´s are inaccessable.
iSCSI Target is Synology RS812RP+
Any ideas?
Thanks in advance
Is the Lun detected by your host in the devices view?
Hi vXav,
unfortunately it is E)
Its detected and attached, detaching not possible "device in use"
rescans not succesful
Hi,
I can`t mount or unmount, this options are greyed
I do not see that model (Synology RS812RP+) in the supported list .
VMware Compatibility Guide - Storage/SAN Search
Can you rescan adapter and cehck the vobd.log and vmkernel.log on ESXi and copy over them.
Regards,
AJ
Hi AJ,
thanks for interest.
I´ll try to send logs tommorrow. We have a day off here today
BR
vobd.log
2019-06-07T14:06:34.853Z: [iscsiCorrelator] 158390385us: [vob.iscsi.target.connect.error] vmhba65 @ vmk1 failed to login to iqn.2000-01.com.synology:VMNAS01.name because of a network connection failure.
2019-06-07T14:06:34.853Z: [iscsiCorrelator] 158390809us: [esx.problem.storage.iscsi.target.connect.error] Login to iSCSI target iqn.2000-01.com.synology:VMNAS01.name on vmhba65 @ vmk1 failed. The iSCSI initiator could not establish a network connection to the target.
2019-06-07T14:06:34.853Z: An event (esx.problem.storage.iscsi.target.connect.error) could not be sent immediately to hostd; queueing for retry.
2019-06-07T14:06:41.902Z: [vmfsCorrelator] 165439821us: [vob.vmfs.ats.support.lost] ATS-Only VMFS volume 'DS_VMNAS01' is not mounted. This host does not support ATS, or ATS initialization failed.
2019-06-07T14:06:41.902Z: [vmfsCorrelator] 165440253us: [esx.problem.vmfs.ats.support.lost] ATS-Only VMFS volume 'DS_VMNAS01' will not be mounted. Host does notsupport ATS or ATS intialization has failed.
Run below command on SSH to ESXi to check the locking mode.
esxcli storage vmfs lockmode list
You see output similar to:
Volume Name UUID Type Locking Mode ATS Compatible ATS Upgrade Modes ATS Incompatibility Reason
----------- ----------------------------------- ------ ------------ -------------- ----------------- ---------------------------
SYN01 56f52615-c7d247e4-e688-90b11c268865 VMFS-5 ATS true No upgrade needed
SYN02 578356c4-5abc30bc-2cbd-a4badb2db0d4 VMFS-5 ATS+SCSI false None Device does not support ATS
Unmount the VMFS datastore from all the ESXi hosts which are using it and keep it mounted to the ESXi on which its locking mode is showing as ATS.
Run the below command to set the locking mode to ATS+SCSI:-
esxcli storage vmfs lockmode set -s -l <VMFS_label>
Ex:- esxcli storage vmfs lockmode set -s -l DS_VMNAS01
After running the above command, all the ESXi hosts which were not able to see the datastore will be able to see it now.
Regards,
AJ
Hi vxav,
not sure what I should check? MTU size in TCP/IP?
It´s set to 1500, I think it was also 1500 before update.
BR
When using iSCSI the MTU is usually set to 9000. Meaning you pass more data per frame to maximize bandwidth usage. It needs to be the same on all components of the chain (array > switch > nic).
However I think Ajay is onto something here.
I think he wants you to check the lockmode mecanism on all hosts to see if one of them has the datastore as ATS-only.
You can understand more about your issue in this KB.
Thank you guys,
I´ve bougth a support ticket and opened a case.
They check some logs now...