SRU: nbd-client is killed during diskless client shutdown

[laga]

This is a regression from Hardy.

In Hardy, /etc/init.d/sendsigs checked /var/run/sendsigs.omit.d/ for PIDs which shouldn't be killed. In Intrepid, this directory has become /lib/init/rw/sendsigs.omit.d/.

The following debdiff updates the init script to account for this change.

[laga (laga)]

Let me know if the version number is correct. Jaunty isn't open yet, so I'm not sure how to proceed. I appended 8.10 to the version string as described in https://wiki.ubuntu.com/SecurityUpdateProcedures#Preparing%20an%20update

[laga (laga)]

Impact: This bug breaks shutdown for mythbuntu-diskless clients.

TEST CASE: On intrepid, create a mythbuntu-diskless client. Boot it. Shut it down and watch it hang because nbd-client was killed (nbd-client basically provides the root file system for the client).

[John Dong (jdong)]

ACK from motu-sru for the meat of the patch but I advice using version 0ubuntu1.1 for consistency with how other SRUs are typically versioned.

Also, once you prep your final debdiff, whatever versioning scheme you choose, please assign the main bug to yourself to say that you will take care of uploading this fix into Jaunty.

[map7 (map7777)]

I'm running Mythbuntu 8.10 and I had the same problem with my diskless clients. I manually changed my mythbuntu-diskless-client as per the laga diff and it still didn't work. I also had to change:

mkdir -p /var/run/sendsigs.omit.d/
to
mkdir -p /lib/init/rw/sendsigs.omit.d/

[laga (laga)]

I've just pushed 0.10 of mythbuntu-diskless to lp:~mythbuntu/mythbuntu/mb-diskless/

This includes the changes needed to fix this bug in Jaunty. I'll attach an updated debdiff for the intrepid SRU in a few minutes. This will contain an additional change: the call to configure-x.sh is unnecessary as it's been removed by LTSP upstream - X is configless these days.

[laga (laga)]

Oh, I've also taken map7's comment into account. Thanks for that.

[Barney Livingston (ubuntu-barnoid)]

That patch does

mkdir -p /lib/init/rw/sendsigs.omit.d/nbd-client

so it creates the intended destination of the pid file as a directory causing the next line to fail.

[jap1968 (jap1968)]

I am also suffering the same problem.

It is not a mythubuntu install, but just a standard ubuntu installation into a diskless computer.

Version Karmic, with patches up to date (2.6.31-14-generic #48-Ubuntu SMP Fri Oct 16 14:04:26 UTC 2009 i686 GNU/Linux)

The file /lib/init/rw/sendsigs.omit.d/nbd-client is created properly and it contains the PID of nbd-client, but I obtain errors when trying to power off or reboot the diskless computer, just as described here.

The question is that I am using just one computer with RW access to the nbd area. I am afraid that my root filesystem can become corrupt.

[Alex Valavanis (valavanisalex)]

Intrepid Ibex reached end-of-life on 30 April 2010 so I am closing the
report. Can anyone confirm whether this issue still exists in later versions of Ubuntu?

[Launchpad Janitor (janitor)]

[Expired for mythbuntu-diskless (Ubuntu) because there has been no activity for 60 days.]