Acopia Adaptive Resource Switch, Cli Maintenance Manual

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Troubleshooting Managed Volumes
Finding NFS-Only Entries in a Multi-Protocol Volume
8-62 CLI Maintenance Guide
A directory with any FGN-patterned names introduces the opposite problem: a new
NFS-only entry can create a back-end FGN that collides with an existing entry. In this
case, the pre-existing entry with the FGN-patterned name becomes “NFS-only.” For
example, if “MYFILE~1” already exists in a directory and a client creates “myFile?,”
the volume must probe the back-end shares to see if any of them created a
“MYFILE~1” FGN. If the FGN is found, the original “MYFILE~1” entry becomes
“NFS-only.”
Evidence from the field demonstrates that these collision checks are rarely necessary,
though they do affect performance when they occur.
The policy engine is subject to this collision check like any external client.
Identifying All NFS-Only Entries
If CIFS clients complain about access issues or slow performance, you should
identify the NFS-only entries in the volume and work toward changing their names.
This is especially true for directory names, which can obscure multiple files and
directories from CIFS users. Run an nsck-inconsistencies report with the
multi-protocol
flag (recall “Focusing on Multi-Protocol Issues” on page 5-16 ) to reveal
all NFS-only filenames and directory names. Each of them is flagged with an “NF.”
For example, this command sequence generates and shows an inconsistencies report
for the “insur” namespace, which reveals several NFS-only files and directories:
bstnA6k# nsck insur report inconsistencies multi-protocol outputfile insur_fgns
bstnA6k# show reports insur_fgns._claims.rpt
bstnA6k# show reports insur_fgns._claims.rpt
**** Inconsistencies Report: Started at Fri May 11 03:53:43 2007 ****
**** Software Version: 2.05.001.10153 (May 9 2007 17:40:54) [nbuilds]
**** Hardware Platform: ARX-6000
**** Namespace: insur
**** Volume: /claims
**** Path: /claims
**** multiprotocol flag specified
Share Physical Filer
-------------------- ----------------------------------------------------------
[shr1-old ] 192.168.25.21 NFS:/vol/vol1/NTFS-QTREE/insurance, CIFS:insurance
[shr1-next ] 192.168.25.51NFS:/root_vdm_4/patient_records, CIFS:patient_records
**** Legend: