Acopia Networks 810-0044-00 Installationshandbuch PDF herunterladen (Seite 461)

100

101

Shadowing a Volume

Configuring a Shadow-Copy Rule (Source Switch)

CLI Storage-Management Guide 15-17

bstnA6k(gbl-ns-vol-shdwcp[insur~/claims~insurDR])# ...

Disabling SID Translation

You can stop the shadow-copy rule from translating SIDs. This implies one of two

scenarios:

• none of the filers behind the source volume use local groups, or

• clients do not require read access at the shadow volume.

This is the default for shadow-copy rules. Use

no sid-translation to stop SID

translation:

no sid-translation

For example, the following command sequence disables SID translation for the

“insurDR” rule:

bstnA6k(gbl)# namespace insur

bstnA6k(gbl-ns[insur])# volume /claims

bstnA6k(gbl-ns-vol[insur~/claims])# shadow-copy-rule insurDR

bstnA6k(gbl-ns-vol-shdwcp[insur~/claims~insurDR])# no sid-translation

bstnA6k(gbl-ns-vol-shdwcp[insur~/claims~insurDR])# ...

Copying Files Opened through CIFS

By default, the shadow-copy rule opens each file for read-only access, thus blocking

any other applications from writing to the file. This ensures the integrity of the copied

file. However, the back-end filer does not allow the shadow-copy rule to open the file

for read-only access if any other application already has the file open for writes, or for

an impending deletion. The shadow-copy rule cannot copy these open files if they are

Some filer servers can be configured to return an error for an invalid SID

(STATUS_INVALID_SID, STATUS_INVALID_OWNER, and/or

STATUS_INVALID_PRIMARY_GROUP) but accept the file or directory anyway. You

may want to discount these errors from these particular file servers. You can set this up

for each errant file server from gbl-ns-vol-shr mode, using the

sid-translation

ignore-sid-errors

command (recall “Ignoring SID Errors from the Filer (CIFS)” on

page 9-36).

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