User Guide
6. Management
6.6 T10 Zoning
Element 8 descriptor:
Predicted failure=0, Disabled=0, Swap=0, status: No access
allowed
OK=0, Reserved device=0, Hot spare=0, Cons check=0
In crit array=0, In failed array=0, Rebuild/remap=0, R/R
abort=0
App client bypass A=0, Do not remove=0, Enc bypass A=0, Enc
bypass B=0
Ready to insert=0, RMV=0, Ident=0, Report=0
App client bypass B=0, Fault sensed=0, Fault reqstd=0, Device
off=0
Bypassed A=0, Bypassed B=0, Dev bypassed A=0, Dev bypassed
B=0
...
b.
The status of each SCSI device that appear in PHYs 0-7 display
status: OK
. All other
PHYs display
status:No access allowed
due to this specific host not having access to
those SCSI devices.
c.
To view other zone groups on other hosts, log into each host and repeat this entire step.
6.6.5
Disabling Zoning using Linux
Important:
Ensure that zoning is disabled only during a maintenance window. Disabling
zoning while multiple hosts are active on the enclosure could result in data corruption if
another host gains access to a set of drives that it should not have access to. All hosts will
have access to all drives after zoning is disabled.
Step 1 :
From the host server, identify the sg devices that are associated with the 2U24 Flash Storage
Platform ESMs.
Note:
The operating system associates each SEP device as a sg device. The sg
device of the SEP can be used to get status from or control elements within the
enclosure.
a.
Issue the following command:
sg_scan -i | grep -i enc -B 1
b.
Identify the sg devices from the output. The devices can be identified by the
/dev/
sg<devicenumber>
. The devices appear as
/dev/sg10
and
/dev/sg11
bolded in the
example below.
/dev/sg10: scsi1 channel=0 id=17 lun=0
HGST 2U24_STOR_ENCL 0428 [rmb=0 cmdq=1 pqual=0 pdev=0xd]
/dev/sg11: scsi1 channel=0 id=43 lun=0
HGST 2U24_STOR_ENCL 0428 [rmb=0 cmdq=1 pqual=0 pdev=0xd]
Step 2 :
Disable zoning on each of the sg devices that are associated with the 2U24 Flash Storage
Platform ESMs.
a.
Issue the following command to disable zoning on ESM A using the first sg device:
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