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

Looks and feels like ESXi is trying to set a persistent scsi reservation=20

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> On 29 Dec 2020, at 12:20, Bj=C3=B6rn Wiggert <[email protected]> wrote:
>=20
> =EF=BB=BFHi, we are running
> *    QNAP NAS
> *    Debian 10
> *    Host VMware 6.7U3 Hypervisor
>=20
> 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 acce=
ssing it with a Windows 7 iSCSI initiator (read/write) works fine.
>=20
> Using the target b) (Debian 10 / LIO) and the initiator a) (VMware v6.7) w=
orks 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)
>=20
> As soon as we try to write anything VMware reports
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>> 2020-12-28T14:36:00.775Z info hostd[2098690] [Originator@6876 sub=3DParti=
tionsvc opID=3Desxui-2f96-fbd9 user=3Droot] Status : 255 Output: gpt 0 0 0 0=

>>=20
>> Error : Error: Read-only file system during write on /dev/disks/naa.60014=
054b666e78a1c443ee941c60e3e SetPtableGpt: Unable to commit to disk
>=20
>=20
> and the Debian 10 box reports:
>=20
>> kernel: [ 80.210044] TARGET_CORE[iSCSI]: Detected WRITE_PROTECTED LUN Acc=
ess for 0x00000000
>=20
> I don't recognize why VMware mounts the iSCSI LUN read-only but Windows 7 m=
ounts it read-write and VMware mount the QNAP-iSCSI-LUN also read-write.
>=20
> I appreciate any hint - thank you therfor in advance.
>=20
> Jan=20
>=20
> =20