On Sat, Sep 27, 2025 at 10:27:04PM -0700, Jonathan Thornburg wrote: > Suppose I have a shell or perl script which is running /bioctl/ to > create a new softraid device, e.g., which is executing something like > > bioctl -c C -r 123456 -l /dev/sd0a softraid0 > > If everything works correctly, this will create a new softraid crypto > disk /sdN/. My question is, what's the best way for my script to find > out the newly-created /sdN/ device (so that it can do error-checking, > and if all is well, do an appropriate /mount/ command on that device)?
Are you actually creating a _new_ softraid device, (I.E. a partition that was blank before and will prompt the user for a new passphrase), or are you attaching an exiting softraid volume, and just creating a 'new' softraid sd device? If it's the former, and you want to check for a specific volume or one of several volumes being attached, you can use duids instead of device names. If it's the latter, the newly created device will be treated as having duid 0000000000000000, and if you're sure that there is no other device with an all-zero duid, you can access it with fdisk and disklabel in a script to assign a real duid and create partitions.
