Re: autofs stops working after a while with USE_MISC_DEVICE

[Ian Kent <raven@themaw.net>]

Thomas Chan wrote:
> 
>>> lsof shows that automount has 10288 files open, of which most of these
>>> are like:
>>>
>>> automount 15539      root *217u     sock                0,4 595374 can't
>>> identify protocol
>>> automount 15539      root *218u     sock                0,4 595376 can't
>>> identify protocol
>>> automount 15539      root *219u     sock                0,4 595378 can't
>>> identify protocol
>>> automount 15539      root *220u     sock                0,4 595380 can't
>>> identify protocol
>>>
>>> Upon restarting autofs, these open files are cleared out and automount
>>> works, but the open files gradually build up again.
>>>
>>> After setting USE_MISC_DEVICE=no, I no longer get the open file issue,
>>> but we are trying to remedy the autofs lazy unmount / cwd issue.
>>
>> Mmm .. that's not good.
>> I'll have a look and see what I can see.
>>
>> Ian
> 
> Sorry about the initial red herring, but it looks like I'm getting the
> increasing open files even with USE_MISC_DEVICE=no.  I must have
> previously done a grep for autofs instead of automount.
> 
> In any case, after a restart of autofs:
> [root@talon ~]# /etc/init.d/autofs restart
> Stopping automount:                                        [  OK  ]
> Starting automount:                                        [  OK  ]
> [root@talon ~]# lsof |grep automount | grep sock
> automount   309      root   52u     sock                0,4 3230868911
> can't identify protocol
> automount   309      root   54u     sock                0,4 3230868918
> can't identify protocol
> automount   309      root   55u     sock                0,4 3230868920
> can't identify protocol
> automount   309      root   56u     sock                0,4 3230868922
> can't identify protocol
> automount   309      root   57u     sock                0,4 3230868924
> can't identify protocol
> automount   309      root   59u     sock                0,4 3230868930
> can't identify protocol
> automount   309      root   61u     sock                0,4 3230868937
> can't identify protocol
> automount   309      root   62u     sock                0,4 3230868939
> can't identify protocol
> automount   309      root   63u     sock                0,4 3230868941
> can't identify protocol
> automount   309      root   64u     sock                0,4 3230868943
> can't identify protocol
> automount   309      root   66u     sock                0,4 3230868949
> can't identify protocol
> automount   309      root   68u     sock                0,4 3230868956
> can't identify protocol
> automount   309      root   69u     sock                0,4 3230868958
> can't identify protocol
> automount   309      root   70u     sock                0,4 3230868960
> can't identify protocol
> automount   309      root   71u     sock                0,4 3230868962
> can't identify protocol
> automount   309      root   73u     sock                0,4 3230868968
> can't identify protocol
> automount   309      root   75u     sock                0,4 3230868975
> can't identify protocol
> automount   309      root   76u     sock                0,4 3230868977
> can't identify protocol
> automount   309      root   77u     sock                0,4 3230868979
> can't identify protocol
> automount   309      root   78u     sock                0,4 3230868981
> can't identify protocol
> [root@talon ~]#
> 
> This gradually increases with every new mount until automount has 10288
> files open.

What distribution, and more specifically, what libtirpc, if any?

Ian