On Wed, Oct 10, 2018 at 03:27:56PM +0200, Patrick Dupre wrote:
Hello,
I made some tests, but it is strange to me.
dparm -Y /dev/sdb
I don't use the "-Y" (uppercase) option, so I really can't comment on
it ... lower case (-y) works lie a charm here ...
/dev/sdb:
issuing sleep command
then
hdparm -C /dev/sdb
/dev/sdb:
drive state is: active/idle
Not sure what this means - are you sure you didn't end the "sleep" of
the disk with this command, or is there some other process trying to
access the disk that spinned it up again? - if you really want to
issue the "-Y" switch maybe try the smartctl command you mentioned
after rendering the disk to sleep, with the appropriate
"-nocheck=<whatever>" (see man page) flag ....
And maybe check whether there are read/writes to the disk?
Someth. like:
dstat -dc -C total -f 5
Again: the lower case hdparm "-y" flag seems to just be working
here. The standy tho' is finished, IIRC, once I suspend and resume the
computer.
Wolfgang
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