On Wed, 30 Sep 2009, Tom Chen wrote:
> Robin,
>
> Thanks.
>
> Could you give me some detailed steps to use "uadmin" to test Suspend/Resume?
>
> Tom
First, setup cpr_debug:
echo "cpr_debug/W0xff" | mdb -kw
This will display debugging information to the console about which
devices are being suspended.
And then us uadmin(1m) with the A_FREEZE cmd (3) and one of the
following fcn's (all but 0, 2, 20, and 21 should be considered
"Volatile" interfaces and *may* change at any time):
0 - AD_SUSPEND Suspend, saving the state (a.k.a. S4/Hibernate)
2 - AD_CHECK Check the above suspend is enabled
7 - AD_CPR_TESTNOZ Suspend normal, immediate resume
8 - AD_CPR_TESTZ Suspend compress, immediate resume
20 - AD_SUSPEND_TO_RAM (the below are in my blog)
21 - AD_CHECK_SUSPEND_TO_RAM
22 - AD_LOOPBACK_SUSPEND_TO_RAM_PASS
23 - AD_LOOPBACK_SUSPEND_TO_RAM_FAIL
25 - AD_DEVICE_SUSPEND_TO_RAM (note on this below)
Note on the "25" fcn, it takes an mdep argument which is the major
number of the driver that is being tested - AND only works on x86
machines.
So, to verify if Suspend to Disk is enabled:
uadmin 3 2
To verify if Suspend to RAM is enabled:
uadmin 3 21
To test Suspend to Disk with immediate restart:
uadmin 3 7
(note that this writes an uncomressed statefile, using '8' compresses
the statefile, which for most testing probably doesn't make a
difference)
To test Suspend to RAM without actually powering the machine off:
uadmin 3 22
To test a driver who's major number is 79 (which happens to be the
major number of the bge driver on one of my test machines):
uadmin 3 25 79
Additional note:
Suspend to disk is currently only supported on Sparc
Suspend to RAM is currently only supported on X86
So: 'uadmin 3 21' will fail on Sparc as will 'uadmin 3 2' on x86.
Good Luck!
---- Randy
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