Oracle ZFS Storage Appliance: 'unknown' file names under the Analytics display output
(Doc ID 2191897.1)
Last updated on OCTOBER 01, 2021
Applies to:
Sun ZFS Storage 7420 - Version All Versions to All Versions [Release All Releases]Oracle ZFS Storage ZS3-BA - Version All Versions to All Versions [Release All Releases]
Oracle ZFS Storage ZS3-4 - Version All Versions to All Versions [Release All Releases]
Sun ZFS Storage 7120 - Version All Versions to All Versions [Release All Releases]
Sun ZFS Storage 7320 - Version All Versions to All Versions [Release All Releases]
7000 Appliance OS (Fishworks)
Symptoms
Using analytics can really help to frame the ZFS appliance activity/performance . The focus can be toward shares and even each filename of the shares.
We can use, for example, the following analytic : NFSv3 operations per seconds broken down by filename.
Unfortunately, most of the activity may be reported against <unknown> file names.
The "Sun ZFS Storage 7000 Analytics Guide" tells this :
There are some circumstances where the filename is not known, such as after a cluster failover and when clients continue to operate on NFS filehandles without issuing an open to identify the filename.
In these situations the filename reported is "<unknown>".
Actually, this is not the only case.
Changes
This behavior has been present since the very first release of the ZFS Storage Appliance in 2008.
Cause
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In this Document
| Symptoms |
| Changes |
| Cause |
| Solution |