[Bug 469985] Re: mountall gets stuck in a busywait while mounting /sys/kernel/debug when running on Xen

2009-11-11 Thread Berteun
Long story short: It won't work directly, the Debian kernel is too old. mountall uses pipe2 (http://www.kernel.org/doc/man- pages/online/pages/man2/pipe.2.html) when mounting. Therefore in mountall.c in the function 'spawn' the following line: NIH_ZERO (pipe2 (fds, O_CLOEXEC)); causes an in

[Bug 469985] Re: mountall gets stuck in a busywait while mounting /sys/kernel/debug when running on Xen

2009-11-11 Thread Berteun
I have the same behaviour with a Ubuntu domU under a Debian Lenny system, the kernel used is Debian's 2.6.26-2-xen-amd64. I provide a strace file of mountall as called by mountall.conf – the final line just keeps repeating. The whole strace file was over 100 MB but the last lines were all the same.

[Bug 469985] Re: mountall gets stuck in a busywait while mounting /sys/kernel/debug when running on Xen

2009-11-09 Thread Scott James Remnant
Which process is consuming the CPU, is it mountall or mount? Please strace the process and provide the output so we can see what it's doing ** Changed in: mountall (Ubuntu) Status: New => Incomplete ** Changed in: mountall (Ubuntu) Importance: Undecided => High -- mountall gets stuck

[Bug 469985] Re: mountall gets stuck in a busywait while mounting /sys/kernel/debug when running on Xen

2009-11-02 Thread srb
I'm running into a similar issue with Xen using 9.10 as a domU with kernel version 2.6.18. Adding a note about this to https://help.ubuntu.com/community/KarmicUpgrades would be hugely helpful to Xen users who have not yet upgraded and are unaware of mountall's kernel requirements. -- mountall ge

[Bug 469985] Re: mountall gets stuck in a busywait while mounting /sys/kernel/debug when running on Xen

2009-11-01 Thread William Pitcock
It should also be mentioned that this bug causes the Ubuntu 9.10 VM to use 100% CPU until it is stopped, which is just annoying. -- mountall gets stuck in a busywait while mounting /sys/kernel/debug when running on Xen https://bugs.launchpad.net/bugs/469985 You received this bug notification bec