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Re: /dev/bcache/by-uuid directory empty

From: Tobias Geerinckx-Rice
Subject: Re: /dev/bcache/by-uuid directory empty
Date: Fri, 18 Dec 2020 15:13:37 +0100


You may well be the first to (try to) use bcache on Guix System.

Nathan Dehnel 写道:
The manual states
that udev is necessary, and it is enabled:

It says:

--8<---------------cut here---------------start------------->8---
bcache-tools now ships udev rules, and bcache devices are known to
the kernel immediately.
--8<---------------cut here---------------end--------------->8---

which is a bit more than that. Guix doesn't ship bcache-tools (yet); are you using your own package? If so, please consider sharing :-)

You'd have to add it to the RULES field of your system's UDEV-CONFIGURATION to make the system's udev ‘see’ the rules. Simply installing it or adding it to your system packages isn't enough.

The kernel docs continue:

--8<---------------cut here---------------start------------->8---
Without udev, you can manually register devices like this::

 echo /dev/sdb > /sys/fs/bcache/register
 echo /dev/sdc > /sys/fs/bcache/register

Registering the backing device makes the bcache device show up in
/dev; you can now format it and use it as normal.
--8<---------------cut here---------------end--------------->8---

Have you tried this?

Good luck,


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