Re: LinuxIO (LIO) target @ Debian 10 and VMware 6.7 Initiator: Detected WRITE_PROTECTED LUN Access for 0x00000000

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Looks and feels like ESXi is trying to set a persistent scsi reservation 

Sent from my iPhone

> On 29 Dec 2020, at 12:20, Björn Wiggert <b@xxxxxxxxxx> wrote:
> 
> Hi, we are running
> *    QNAP NAS
> *    Debian 10
> *    Host VMware 6.7U3 Hypervisor
> 
> a) Exporting an iSCSI-LUN-target with the QNAP, what is using LIO therfor, and accessing it from VMware (read/write) works fine.
> b) Exporting an iSCSI-LUN-target with a fresh Debian 10 using LIO and accessing it with a Windows 7 iSCSI initiator (read/write) works fine.
> 
> Using the target b) (Debian 10 / LIO) and the initiator a) (VMware v6.7) works as far as
> *    VMware sees the target host
> *    VMware can login and sees the target
> *    VMware can READ the data on the LUN (sees partition table, size of it, partition types, etc)
> 
> As soon as we try to write anything VMware reports
> 
>> 2020-12-28T14:36:00.775Z info hostd[2098690] [Originator@6876 sub=Partitionsvc opID=esxui-2f96-fbd9 user=root] Status : 255 Output: gpt 0 0 0 0
>> 
>> Error : Error: Read-only file system during write on /dev/disks/naa.60014054b666e78a1c443ee941c60e3e SetPtableGpt: Unable to commit to disk
> 
> 
> and the Debian 10 box reports:
> 
>> kernel: [ 80.210044] TARGET_CORE[iSCSI]: Detected WRITE_PROTECTED LUN Access for 0x00000000
> 
> I don't recognize why VMware mounts the iSCSI LUN read-only but Windows 7 mounts it read-write and VMware mount the QNAP-iSCSI-LUN also read-write.
> 
> I appreciate any hint - thank you therfor in advance.
> 
> Jan 
> 
>  




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