Installation manual

Adding a Managed Volume
Dividing the Import into Multiple Scans
9-8 CLI Storage-Management Guide
bstnA6k(gbl)# namespace wwmed
bstnA6k(gbl-ns[wwmed])# volume /acct
bstnA6k(gbl-ns-vol[wwmed~/acct])# import protection
bstnA6k(gbl-ns-vol[wwmed~/acct])# ...
Reverting to Unprotected Metadata and Faster Import
Protected metadata introduces a performance penalty during import. An unprotected
import is often the best choice when it fits comfortably into the assigned cut-in
window. As mentioned above, CIFS clients would be affected far less than NFS
clients in the event of an unexpected reboot. To leave metadata unprotected during
import, thereby making import faster, use the
no import protection command:
no import protection
After the import is over, the volume starts recording all metadata transactions in
NVRAM. The metadata is only unprotected during the import.
For example, this command sequence lifts all metadata protection from the
“medarcv~/lab_equipment” volume during import:
bstnA6k(gbl)# namespace medarcv
bstnA6k(gbl-ns[medarcv])# volume /lab_equipment
bstnA6k(gbl-ns-vol[medarcv~/lab_equipment])# no import protection
bstnA6k(gbl-ns-vol[medarcv~/lab_equipment])# ...
Reverting Back to the Faster, Single-Scan Import
If the cut-in window is adequate for the single-scan import time, you can use it to
shorten the overall time for import. Use
no import multi-scan to revert to single-scan
imports:
no import multi-scan
As mentioned above, this only applies to future imports.
For example, this command sequence reverts the “wwmed~/acct” volume to the faster
single-scan import:
bstnA6k(gbl)# namespace wwmed
bstnA6k(gbl-ns[wwmed])# volume /acct