On 07/13/13 12:34, frantisek holop wrote: > hi there, > > i have decided to create an encrypted usb stick that > would be the rsynced backup of my $HOME. > > i started by reading softraid(4). and its only example > looks scary -- it destroys all data on sd0, my main > drive for years :] i know, it is only an _example_ > and should never be copied verbatim, but perhaps it > also doesnt have to be something so in-my-face > desctructive just becuse it is an example, especially > when i am trying to do something totally new and > potentionally very destructive... > > it was not clear to me right from the beginning that > the raid volume to be created will be "just another" > sd* drive (some other systems have special devices), > explaining that was left enterily to the example, > and me having only sd* drives (hard drives, memory > cards, usb sticks) it is not a very useful one > for me...
Hopefully that was a little more clear in the FAQ. > > i also had a look at the FAQ: 14.21.5 - Softraid Crypto > and there is this paragraph that does not seem to work: > > """ > Once this is set up, you can then "unlock" the crypto volume when desired > with: > > # bioctl -c C -l /dev/sd1m > Passphrase: My Crypto Pass Phrase > softraid0: CRYPTO volume attached as sd1 > > You can then mount the encrypted volume's partitions using mount as usual. whoops. yep, that should be "bioctl -c C -l /dev/sd1m softraid0". fixed. > """ > > i am not sure what "unlock" means. but the command does > not work, bioctl(4) always takes a device parameter > according to the man page. > > > but so far so good. the stick appears to be under bioctl's care > and i could mount it. i will still have to experiment with > hotplug and friends, and what exactly does > "softraid0: roaming device sd2a -> sd1a" > mean, as sd2 is the sd card reader showing up as a usb device... Roaming means the device isn't where it was previously. USB devices are very prone to this, as they are often plugged in post-boot in varying orders, and that will very often result if a device was hot-plugged last boot and plugged in at boot this time. In the case of USB devices, it is probably a non-event, but if you have physical SCSI-like devices hard-attached to your system, you probably have had an event, like a drive failure or removal. Softraid adjusts quite well, but YOU may wish to think about if there is a larger issue or not. Nick.
