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  • 1.  Datastore and LUN id

    Posted Jan 23, 2014 12:55 PM

    Hi,

    I am having a strange problem with my storage.

    I cant see the one of the Datastore which is mounted on my ESXi. esxcfg-scsidevs -m also doest show that LUN/datastore.

    but when i see with esxcfg-mpath -l . i can see that lun. moreover, from SAN i can see it is mounted.

    If i see on VC under devices i can find the LUN id but i cant see that LUN in data store.

    can anyone guide me here, how i can find that datastore.



  • 2.  RE: Datastore and LUN id

    Posted Jan 23, 2014 01:15 PM

    Hi,

    Its seems the lun is not mounted by esx host. You can use the following options:

    Use the rescan in GUI and chose both options.

    If the lun does not mount using rescan look at the /var/log/vmkernel.log to diagnose the issue. Alternatively you may also try adding the storage back with existing signature if you have not created any lun clones for this lun on storage.

    -f10



  • 3.  RE: Datastore and LUN id

    Posted Jan 23, 2014 01:23 PM

    Thanks f10,

    Yes, you are correct the Lun is not mounted on esxi. But add storage wizard showing the hard disk is blank with a message "A partition will be created and used " but when i see it on storage it is showing around 70% data on it. So if i run through add storage wizard. does it format whole lun and attached with this cluster ? i dont have a history of this datastore

    Thanks again



  • 4.  RE: Datastore and LUN id

    Posted Jan 23, 2014 01:55 PM

    Do not format the lun I suspect that the partition is deleted. What vmfs version are you using? 3.5 or 5.0



  • 5.  RE: Datastore and LUN id

    Posted Jan 23, 2014 02:47 PM

    I am having a vmfs 3.



  • 6.  RE: Datastore and LUN id
    Best Answer

    Posted Jan 23, 2014 02:52 PM

    The following KBs will help you

    VMware KB: Recovering a lost partition table on a VMFS volume

    VMware KB: Recreating a missing VMFS datastore partition in VMware vSphere 5.0/5.1/5.5

    Deleting/Recreating the partition tables does not affect the data however at any point in time if you feel that you need help in recovering the lost partition table, log a case with VMware Support and ask for their assistance.

    All the best !

    -f10