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SubjectRe: autofs stuck at down() in mkdir/rmdir


On Tue, 12 Jan 1999, Anton Blanchard wrote:

>
> This is on a Sparc 4m/690 running vger 2.2.0-pre4 and autofs 0.3.14. We
> are using autofs to handle /home with many NFS mounts. After some use,
> automount locks up as such:
>
> # ps axl | grep automount
> 40 0 328 1 0 0 1388 220 pipe_read S ? 2:13 automount
> 40 0 21506 328 0 0 1392 284 rmdir D ? 0:00 automount
> 140 0 21512 328 0 0 1388 492 mkdir D ? 0:00 automount
>
> Are there any known problems with the semaphore locking code in
> sys_mkdir/sys_rmdir?

Erm... It depends on the *place* where it got caught. If the *method*
calls down() it opens the door for deadlocks. So if they are sleeping
inside the autofs code - bad. If it's in VFS proper... Hmm... Are there
any other blocked processes?


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