VMware Datastore Becomes Inaccessible After LUN Resize in ONTAP System Manager Due to LUN Unmapping

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Visibility:: Public

Votes:: 0

Category:: ontap-9

Specialty:: san

Last Updated:

Applies to

ONTAP 9
System Manager
SAN (FCP/ISCSI)

Issue

After resizing a LUN in NetApp ONTAP using System Manager GUI, a VMware datastore became inaccessible resulting in the VMware datastore showing 0 free space and being unavailable to the host.
AUDIT-MLOG-TXT.GZ log has a record of DELETE lun_maps api being executed in ASUP:

elrxx:http :: 10.126.xx.xx:49xx5 :: elroy:s2705036 :: DELETE /api/protocols/san/lun_maps/450d5e9f-7599-414a-aacd-297c93b0cd27/06b4ef60-47f5-11e6-b14f-00a098557371 : ["X-Dot-Client-App: SMv4"] :: Pending elrxx:http :: 10.126.xx.xx:49xx5 :: elroy:s2705036 :: DELETE /api/protocols/san/lun_maps/450d5e9f-7599-414a-aacd-297c93b0cd27/06b4ef60-47f5-11e6-b14f-00a098557371 : ["X-Dot-Client-App: SMv4"] :: Success

Lun unmap was verified in ASUP LUN-MAPS.XML logs or from cli:

wknd-cm912::*> lun show -fields uuid Vserver Path State Mapped Type Size uuid --------- -------------------------------------------- ------------------------------------------------------ iscsi_svm /vol/iscsi_lun/iscsi_lun1 online unmapped windows 9GB 450d5e9f-7599-414a-aacd-297c93b0cd27 iscsi_svm /vol/iscsi_lun/iscsi_lun2 online mapped windows 9GB 450d5e9f-7xx9-4x4a-aacd-12312vcb2334