Problem with Notes client on Samba 2.0.7 share

David Collier-Brown David.Collier-Brown at
Mon Jul 31 13:12:11 GMT 2000

Roland Fehrenbacher wrote:
>> we have a strange problem running the Notes R5 client on a Samba share:
> At irregular intervals the Notes client reports an "unexpected network error",
> which means it becomes unusable, and Samba shows a message like
> [2000/06/15 10:13:13, 0] locking/locking_shm.c:shm_get_share_modes(213)
> get_share_modes: process 618 no longer exists

> >From looking at the source code (locking/locking_shm.c), the function
> get_share_modes tries to read the share modes of a given file in the shared
> memory segment allocated by Samba. The corresponding entry for the file seems
> to be referenced by the PID which originally opened the file, and for some
> reason that process has died.

	The client has disconnected from the Samba server,
	and the server has noticed and cleaned up, allowing
	the child process serving that particular client to

> [2000/06/15 10:13:13, 0] locking/locking_shm.c:shm_get_share_modes(213)
>  get_share_modes: file with dev 1540008 inode 23543 empty

	An it looks like it disconnected somewhere between
	creating or truncating a file and filling it with data.
	This is probably A Bad Thing (;-))

> The Samba server runs on Solaris 2.6. The problem does not appear when the
> Notes files are on a real NT share, or on a lightly loaded Samba server
> dedicated to just serving the Notes files (tested on Linux, and Solaris 2.6(.

	In that case it's probably a response-time related issue.
	Windows clients have some odd timeouts built in, and you
	may have exceeded one of these.

	This may indicate a server overload (normally unlikely) or 
	a network problem. As you noted that there was a slowness
	problem, your server may be being slothful...

	[Change to Sun hat]
	Can you collect a sar snapshot during a busy period
	on your Solaris machine?  The command is 

		sar -o roland26.raw 10 30

	which means write a binary file of the stats the
	kernel collects: this is a low-overhead operation,
	and can be done on a heavily-loaded machine. Then
	mail me the file and I'll mail you a report on what's

	This applys to anyone using Solaris, by the way: I
	read sar files for a living.
	[Sun hat off]

	Mind you, running a dedicated notes server on a Linux
	box is A Good Idea, anyway...

	We've seen this kind of disconenction a lot this year,
	but it's often been things like bad hubs or routers.
	The team would love to know precisely what it is so
	they can fix it (:-))

David Collier-Brown,  | Always do right. This will gratify some people
185 Ellerslie Ave.,   | and astonish the rest.        -- Mark Twain
Willowdale, Ontario   | //
Work: (905) 415-2849 Home: (416) 223-8968 Email: davecb at

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