Bug 77042
| Summary: | No way of forcing nfs localhost mounts - they always use bind | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | lee.essen |
| Component: | autofs | Assignee: | Nalin Dahyabhai <nalin> |
| Status: | CLOSED CANTFIX | QA Contact: | Brock Organ <borgan> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 8.0 | ||
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2006-10-18 16:50:26 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Red Hat Linux is no longer supported by Red Hat, Inc. If you are still running Red Hat Linux, you are strongly advised to upgrade to a current Fedora Core release or Red Hat Enterprise Linux or comparable. Some information on which option may be right for you is available at http://www.redhat.com/rhel/migrate/redhatlinux/. Red Hat apologizes that these issues have not been resolved yet. We do want to make sure that no important bugs slip through the cracks. Please check if this issue is still present in a current Fedora Core release. If so, please change the product and version to match, and check the box indicating that the requested information has been provided. Note that any bug still open against Red Hat Linux on will be closed as 'CANTFIX' on September 30, 2006. Thanks again for your help. Red Hat Linux is no longer supported by Red Hat, Inc. If you are still running Red Hat Linux, you are strongly advised to upgrade to a current Fedora Core release or Red Hat Enterprise Linux or comparable. Some information on which option may be right for you is available at http://www.redhat.com/rhel/migrate/redhatlinux/. Closing as CANTFIX. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (Windows; U; WinNT4.0; en-US; rv:1.1b) Gecko/20020721 Description of problem: The "mount --bind" option does not support the concept of having a read-only copy, so NFS mounting localhost is the only way to acheive this. Unfortunately autofs (mount_nfs.so) checks to see if a mount is local and then uses the bind option if it is. Below is a sample patch file to adjust this behaviour so that if the hostname is "localhost" then it's taken to mean force an NFS mount rather than using bind. Background: I have an area which gets rsync'd onto my machine (so I need it to be writeable), but I want to present it to users as read only in general use as a reminder that it's not the authoritative source. Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. Create an autofs map with an entry like: fred -fstype=nfs localhost:/usr/local 2. cd to the automount point (to get it mounted) 3. check the type of mount using "mount". Actual Results: You will see that the mount is done using the "bind" option. Expected Results: (my preferred approach) The mount should have been completed using NFS, in that way any NFS specific parameters to the mount command will be honoured (i.e. ro) Additional info: A simple patch file to do this is attached here (cut and paste may screw up the space/tab arrangement, but it's simple enough to redo). --- autofs-3.1.7/modules/mount_nfs.c 2002-10-31 09:26:47.000000000 +0000 +++ autofs-3.1.7/modules/mount_nfs.c 2002-10-31 09:29:06.000000000 +0000 @@ -107,6 +107,8 @@ name, hostname); return 1; /* No such host */ } + if( strcmp( hostname, "localhost" ) != 0 ) { + /* take this as an explicit request not to do "bind" */ /* Probe to see if we are the local host. Open a UDP socket and see if the local address is the same as the remote one */ @@ -138,6 +140,7 @@ break; } } + } /* end of the localhost check */ if ( paren ) *paren = '(';