Oracle ZFS Storage Appliance: Changing Parameters on a LUN Fails with "libstmf error: create meta file failed"

Asset ID:	1-72-2131641.1
Update Date:	2016-05-03
Keywords:

Solution Type Problem Resolution Sure

Solution 2131641.1 : Oracle ZFS Storage Appliance: Changing Parameters on a LUN Fails with "libstmf error: create meta file failed"

Applies to:

Sun Storage 7310 Unified Storage System - Version All Versions and later
Sun Storage 7210 Unified Storage System - Version All Versions and later
Sun Storage 7410 Unified Storage System - Version All Versions and later
Sun ZFS Storage 7120 - Version All Versions and later
Sun ZFS Storage 7320 - Version All Versions and later
7000 Appliance OS (Fishworks)

Symptoms

An attempt is made to change a parameter on a ZFS storage appliance LUN. In this particular case, the Write Cache Disable tunable is being set to true. The command will fail with the following error from the CLI:

ZFS:> shares Select Dbase Select 10GB_lun
ZFS:shares Dbase/10GB_lun> set writecache=false
writecache = false (uncommitted)

ZFS:shares Dbase/10GB_lun> commit
error: An unanticipated system error occurred: failed to set WCE for LU
600144F0D7A7985E0000571E4BA20003: libstmf error: create meta file failed
(code 0x8107)
This may be due to transient failure, or a software defect. If this problem
persists, contact your service provider.

ZFS:shares Dbase/10GB_lun>

Similarly, the command fails in the BUI.

WCE_Fault

Running the command from the shell will also fail.

# stmfadm modify-lu -p wcd=false 600144F0D7A7985E0000571E4BA20003
stmfadm: could not create meta file

Cause

The error only lets us know that the command could not create metadata for the attribute change. What it is not telling you, is that it failed because the pool is full.

To see how much space is available in the pool, you can check the Project in the BUI.

100_percent

You can also check in the CLI:

NAS> shares select Dbase get space_available
space_available = 0

Note: When changing a file system attribute on a 100% full pool, the error message is much more in line with the problem at hand.

No_Space

Solution

You need to free up space or add capacity to the pool.

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