USB device activity when not mounted

2012-06-15 Thread Thomas Mueller
I can understand why I would see activity on a USB device when it's first plugged in. But why do I see continued activity (i.e. the light blinks on a usb disk or memory stick)? When I umount one of these, they keep being beat up on and it makes me nervous... At what point is it sync'd

Re: USB device activity when not mounted

2012-06-15 Thread Gary Aitken
On 06/15/12 03:23, Thomas Mueller wrote: I can understand why I would see activity on a USB device when it's first plugged in. But why do I see continued activity (i.e. the light blinks on a usb disk or memory stick)? When I umount one of these, they keep being beat up on and it makes me

Re: USB device activity when not mounted

2012-06-14 Thread Michael Powell
Polytropon wrote: On Wed, 13 Jun 2012 22:26:16 -0600, Gary Aitken wrote: I can understand why I would see activity on a USB device when it's first plugged in. But why do I see continued activity (i.e. the light blinks on a usb disk or memory stick)? When I umount one of these, they keep

Re: USB device activity when not mounted

2012-06-14 Thread Mike Clarke
On Thursday 14 June 2012 07:05:11 Polytropon wrote: I don't think that's a problem. I've got a USB stick here that has a blinkenlight as soon as it's powered on (plugged in), even if there is no reading / writing / mounting activity. After you've successfully performed umount, the USB stick

Re: USB device activity when not mounted

2012-06-14 Thread Daniel Feenberg
On Thu, 14 Jun 2012, Mike Clarke wrote: On Thursday 14 June 2012 07:05:11 Polytropon wrote: I don't think that's a problem. I've got a USB stick here that has a blinkenlight as soon as it's powered on (plugged in), even if there is no reading / writing / mounting activity. After you've

Re: USB device activity when not mounted

2012-06-14 Thread Polytropon
On Thu, 14 Jun 2012 09:49:00 -0400 (EDT), Daniel Feenberg wrote: Is it possible that there is volitile memory buffering in the stick that may not have been written to flash when umount thinks it is complete, and the flashing light is an indication that power is still required to complete

Re: USB device activity when not mounted

2012-06-14 Thread Mike Clarke
On Thursday 14 June 2012 15:45:46 Polytropon wrote: However, as you said it might be possible that _inside_ the USB stick there is still an action that needs to be performed and therefore requires power. That's a possibility. But I doubt this takes several seconds to complete... I've