Adding Cache Devices to an Existing Pool
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Install the new Readzilla or Logzilla device into the first available
slot. See the Overview in Oracle ZFS Storage Appliance Installation Guide
for slot locations.
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At the command line, enter:
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: poc:> configuration storage
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Specify the pool you want to add the device to:
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: poc:configuration storage (pool_2)> set
pool=pool_2
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: pool = pool_2
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: poc:configuration storage (pool_2)> add
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:A message reminds you to verify that the device is correctly installed.
Note that mixing device types and speeds is strongly discouraged.
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Show the device information for the pool:
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: poc:configuration storage (pool_2) verify>
show
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: ID STATUS ALLOCATION DATA LOG CACHE RPM
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: 0 ok custom 0 0 0/4 1.86T
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: 1 ok custom 0 0/2 34G 0 15000
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: 2 ok custom 0 0/2 34G 0 15000
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Specify which disk shelf and the number of Logzillas or Readzillas to
use. In the following example, 1-log=1 allocates one
Logzilla from the first disk shelf.
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: poc:configuration storage (pool_2) verify> set
1-log=1
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: 1-log = 1
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:Note: A value of "1-log=2" would allocate two Logzillas from the first
disk shelf.
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:This example allocates one Readzilla from the first disk shelf.
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: poc:configuration storage (pool_2) verify> set
1-cache=1
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: 1-cache = 1
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Enter done.
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: poc:configuration storage (pool_2) verify>
done
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: Note: If you add an odd number of Logzilla devices to a pool, or if a
pool does not have already a profile, enter set
log_profile=log_mirror to set the log profile.
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Enter show to display the profile.
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: poc:configuration storage (pool_2) config>
show
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:
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: PROFILE CAPCTY NSPF DESCRIPTION
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: log_profile = log_stripe 17G no Striped log
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Enter done to complete the task:
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: poc:configuration storage (pool_2) config>
done
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: poc:configuration storage (pool_2)>
