illumos gate

Hi,

Houston, we have a problem - ZFS Logical Unit stuck in the offlining state with COMSTAR.

Mandatory condition to reproduce the problem - the presence of the I/O load on Logical Unit

stmfadm create-lu /dev/zvol/rdsk/GIGO/zvol200g
stmfadm add-view 600144F054A281000000513DB9770005

I mounted iscsi device on the initiator and began to upload with dd

At this point, you can execute commands:

stmfadm delete-lu -k 600144F054A281000000513DB9770005

or

stmfadm offline-lu 600144F054A281000000513DB9770005

Logical Unit will stuck in the offlining state

stmfadm list-lu -v
LU Name: 600144F054A281000000513DB9770005

    Operational Status: Offlining
    Provider Name     : sbd
    Alias             : /dev/zvol/rdsk/GIGO/zvol200g
    View Entry Count  : 0
    Data File         : /dev/zvol/rdsk/GIGO/zvol200g
    Meta File         : not set
    Size              : 214748364800
    Block Size        : 512
    Management URL    : not set
    Vendor ID         : SUN
    Product ID        : COMSTAR
    Serial Num        : not set
    Write Protect     : Disabled
    Writeback Cache   : Enabled
    Access State      : Active

As a consequence, it cannot be unloaded from the COMSTAR framework

stmfadm delete-lu 600144F054A281000000513DB9770005
stmfadm: resource busy

Hence the GIGO pool cannot be exported:

zpool export GIGO
cannot export 'GIGO': pool is busy

Resulting in the cluster aborting failover
Now only reboot...

I tested it in OmniOS, OpenIndiana and Illumianos
The problem was in all variants.
Can you fix this?

I found this bug during testing rsf-1
Support rsf-1 says that this bug fixed in NexentaStor

Best regards,
Alexander Shvayakov