[systemd-devel] On /dev/disk/by-id/ata-...-part2 missing, again

[Lennart Poettering]

On Mon, 27.10.14 21:46, Alexander E. Patrakov (patrakov at gmail.com) wrote:

> Some time ago, I have complained that some boots are unsuccessful, because
> the /dev/disk/by-id/ata-OCZ-VECTOR_OCZ-Z5CB4KC20X0ZG7F8-part2 symlink (which
> should point to /dev/sda2) is not created by udev in the initramfs (which
> uses dracut). Thankfully, people on IRC have suggested some useful debugging
> options:
> 
> systemd.log_level=debug rd.udev.log-priority=debug
> 
> So now I have a SOS report. It is over 1 MB, so not attached. The useful
> lines are:
> 
> [    3.026515] localhost systemd-udevd[319]: Unable to flock(/dev/sda),
> skipping event handling: Resource temporarily unavailable
> [    3.027224] localhost systemd-udevd[333]: Unable to flock(/dev/sda),
> skipping event handling: Resource temporarily unavailable
> 
> Let me complain here that these error messages still don't contain the
> complete picture. How am I supposed to know which program in my
> dracut-created initramfs locks /dev/sda and interferes with udev event
> handling?

Most likely you are either using a too old util-linux, whose use of
BSD locks conflict's with udev's use of it. (fsck -l)

Please always check README, it will let you know precisely which
release of util-linux you need at least.

Lennart

-- 
Lennart Poettering, Red Hat