errno 69 (ESRMNT): meaning and diagnosis

Status / error code:		Category:

Constant name:
Source:		Operating System:
Description: a historical remote-file-sharing mount operation failed.

Could be also:
Constant	Type	OS
ERROR_TOO_MANY_SESS	Win32 error	Windows
EDQUOT	errno	Mac
ESRMNT	errno	Solaris
INSUFFICIENT_SYSTEM_MAP_REGS	BugCheck Code	Windows

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ESRMNT

ESRMNT is a historical “Srmount error” value from older remote-file-sharing interfaces. It is retained by Linux as an errno name, but it is not a normal result from contemporary mount(2) troubleshooting paths.

When seen in logs or compatibility code, preserve the layer that translated the remote mount failure. The useful diagnosis is usually in the remote filesystem protocol, helper program, or legacy service, not in the numeric errno alone.

Compare with

ENODEV: filesystem type or device support is missing.
ENOLINK: a lower link was severed.
ESTALE: a remote file handle is stale.
EACCES: access control denied the mount or traversal.

Linux errno(3) · Linux UAPI errno definitions

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