-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Oliver Fromme wrote: | Octavian Covalschi wrote: | > I'm looking a way to spin down HDD just right before power off. Why? | > | > Because currently when I call "shutdown -p now", HDD is powered off at it's | > full speed (7200.4) and as a result | > I hear a noise of stopping/spinning down of HDD, and _this_ concerns me as | > I'm afraid it can damage HDD. | [...] | You can't do anything from | userland at this point. If you want to insert a spin-down | for your disks, you will have to modify the kernel.
That is what I did and am still doing successfully since 2006. See http://lists.freebsd.org/pipermail/freebsd-acpi/2006-January/002375.html for my initial problem description and http://lists.freebsd.org/pipermail/freebsd-acpi/2006-February/002566.html for the "solution". Note that back then David Tolpin (d...@davidashen.net) suggested to use " ... & (ATA_SUPPORT_APM|ATA_SUPPORT_STANDBY)" instead. I don't know if that is the way it should be done, but for me it worked across 3 hard disks and two notebooks so far. I am aware that 3 disks and 2 notebooks provide very limited test results, but maybe this work around solves your problem, too. It would still be great, though, if a proper solution for this could be permanently implemented into FreeBSD. That is, if the current behaviour really is not that healthy to hard drives, as Joerg suggested. Best regards, Daniel -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.11 (FreeBSD) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkmvHBUACgkQCOZKcWNoXg6LvQCgkT9GGMqa6M/t3hhN9cBM8Fee laQAoNPRvQkk4HkvQYjtVPRsxNZr3Lmn =InHj -----END PGP SIGNATURE----- _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
