Maximum number of mounts

Steven French sfrench at
Sat Sep 7 13:12:00 GMT 2002

OS/2 did not have the 10 concurrent connection limit although it did have
configuration options (in IBMLAN.INI) for maxsessions (one per uid that the
server gave out) and maxconnections (one per tid that the server gave out)
as well as a parm that controlled the maximum connections (tids) per
client.  All of these parms can be easily be raised but none of them are
likely to be your problem.

If the failure is from a single Linux workstation you may have hit the
maximum deviceless mount limit in 2.4 based kernels (this would not affect
smbclient and it is not clear whether you are using smbclient or smbfs from
your note).    Prior to Linux 2.5 each mount of a network device (and some
other special purpose devices) took up one of only 255 "deviceless" mount
numbers - it is fairly easy to run out if you are running multiple network
filesystems but this would be clearly visible when you type "mount" and see
about 250 mounts that have no associated local device.

From: Simo Sorce <simo.sorce at>
To: root <root at>
Cc: samba-technical at
Date: 07 Sep 2002 02:15:19 +0200

I think you are mounting against a workstation.
Keep in mind microsoft permit only 10 concurrent access to their
workstation OS

Steve French
Senior Software Engineer
Linux Technology Center - IBM Austin
phone: 512-838-2294
email: sfrench at

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