>>>>> My USB-connected drive spins up every hour (or even half-hour). >>> (...) >>>>> Any idea what it might be and how to find out and fix it? >>>>> IIRC, this setting can be defined using hdparm ("-M" flag and also >>>>> "/usr/ share/doc/hdparm/README.acoustic") but as the man page/doc >>>>> says, the possible options for this value depend on the hard disks >>>>> model. >>>> hdparm only sets the timeout for spin DOWN. My drives spins down just >>>> fine, the problem is that it spins *UP* even though I don't use it. >>> I think both settings can be tweaked. "man hdparm" is long but worth >>> for a slow reading. >> You're confused. Spin up happens when the drive is accessed and that's >> all there is to it. > Well, that's not always the case. There are external drives which have > embeded in their firmware the power saving routines and spin-down/up > automatically based on that, regardless the disk is being accessed or not.
Regardless of where the code responsible for the spin-up resides, if the drive spins up when the drive is not accessed, it's a bug. > Mmm... if you so sure the disk is awaked by an external application, then > don't mount it unless you need it, that way the disk can be still powered > on but it will inaccessible for the system and programs. Even when not mounted (and with its LVM volumes deactivated) it still spins-up. Stefan -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/jwvk424den3.fsf-monnier+gmane.linux.debian.u...@gnu.org