Seagate ST39103LC Guia do Utilizador descarregar pdf (Página 29)

Chapter 3. SVA Path Operation 19

Figure 3-7 Example spmon show Output, Next Interval

Adding FDevs to an

Existing Lun

After adding new FDevs to an existing lun via the “Add FDev”

button on the SVA console, run the following command:

# spmon update-fdevs

This enables spmon to load balance the new FDevs separately

from the rest of the FDevs that make up the LUN. If this command

is not run, the FDevs will be treated as if they belonged to the last

original FDev and will be prevented from being assigned to

different paths. For example, if a LUN was originally composed of

two FDevs

spd0:0 and spd0:1 and the user adds three FDevs

using the SVA console, the new FDevs are assigned to spd0:1.

# spmon show

Total I/O load across monitored HBAs = 105.1s

HBA Device I/O Load %load

------------------------------

c1 glm3 34.1s 32.5%

c2 glm4 31.3s 29.8%

c4 lpfc0 19.1s 18.1%

c5 lpfc1 20.6s 19.6%

Device c6t0d0 [STK 9500 0000000010850000]

FDev Path I/O Load HBA Load

----------------------------------------------------------

spd0:0 0/glm3/sd66 16.9s 34.1s 49.5%

Device c6t0d1 [STK 9500 0000000010850001]

FDev Path I/O Load HBA Load

----------------------------------------------------------

spd1:0 0/glm3/sd67 17.3s 34.1s 50.5%

spd1:1 3/lpfc1/sd190 10.2s 20.6s 49.6%

Device c6t0d2 [STK 9500 0000000010850002]

FDev Path I/O Load HBA Load

----------------------------------------------------------

spd2:0 3/lpfc1/sd191 10.4s 20.6s 50.4%

spd2:1 1/glm4/sd90 15.4s 31.3s 49.3%

spd2:2 2/lpfc0/sd147 19.1s 19.1s 100.0%

Device c6t0d3 [STK 9500 0000000010850222]

FDev Path I/O Load HBA Load

----------------------------------------------------------

spd3:0 1/glm4/sd91 15.9s 31.3s 50.7%

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 67 68

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Seagate ST39103LC Guia do Utilizador Página 29