From: "Peter Münster" <pmlists@free.fr>
To: linux-pm@vger.kernel.org
Subject: prevent disk from spinning up at system resume
Date: Mon, 23 Mar 2015 12:02:30 +0100 [thread overview]
Message-ID: <87iodsht89.fsf@free.fr> (raw)
Hi,
My SATA disk (sdb) spins up at every system resume. How could I avoid
that please?
Some details:
- sdb not mounted
- echo 0 >/sys/block/sdb/device/scsi_disk/2:0:0:0/manage_start_stop
- hdparm -C /dev/sdb : "drive state is: standby"
- s2ram
- after wake up: "drive state is: active/idle"
- kernel message at wakeup: "sd 2:0:0:0: [sdb] Synchronizing SCSI cache"
- when doing "echo scsi remove-single-device 2 0 0 0 >/proc/scsi/scsi"
before s2ram, sdb keeps sleeping after resume
I need the disk only about once per week. I use s2ram several times per
day, and I prefer that sdb keeps sleeping.
TIA for any hints,
--
Peter
next reply other threads:[~2015-03-23 12:10 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-23 11:02 Peter Münster [this message]
2015-03-23 13:57 ` prevent disk from spinning up at system resume Alan Stern
2015-03-23 14:07 ` Peter Münster
2015-03-23 14:19 ` Alan Stern
2015-03-23 14:36 ` Peter Münster
2015-03-23 15:03 ` Alan Stern
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