Acopia Networks 810-0044-00 Manual de instalación descargar pdf (Pagina 241)

100

101

Adding a Managed Volume

Selecting a VPU (optional)

CLI Storage-Management Guide 9-47

To mitigate this problem, you can assign the same namespace to both VPU domains.

This divides the namespace’s volumes between the domains. Each domain runs

independently; one can have a metadata failure without affecting the other. In the

example below, a metadata failure for volume 1 now only affects volume 3:

The volumes on domain 2, volume 5 and volume 7, are completely insulated from the

problem.

By default, a volume goes to the same VPU domain as any other volumes from the

same namespace. As with a direct volume, you can use the optional

domain clause in

the

vpu command to choose a domain for the current managed volume. For example,

the following command sequence assigns the current volume,

“medarcv~/test_results,” to VPU 2, domain 2:

bstnA6k(gbl)# namespace medarcv

bstnA6k(gbl-ns[medarcv])# volume /test_results

bstnA6k(gbl-ns-vol[medarcv~/test_results])# vpu 2 domain 2

bstnA6k(gbl-ns-vol[medarcv~/test_results])# ...

Reverting to Default-VPU Assignment

Before you enable the volume, you can remove the manual-VPU assignment. This

causes the namespace software to assign the volume according to the default rules

(refer back to “Default-VPU Assignment” on page 8-20). From gbl-ns-vol mode, use

the

no vpu command to revert to default-VPU assignment:

no vpu

single namespace

volume 3 volume 5volume 4

volume 6 volume 7volume 2volume 1

VPU 2VPU 1

D1 D2 D1 D2

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