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Old 10-25-2012, 05:10 PM   #1
jwaldram
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Registered: Oct 2005
Distribution: RHEL 4, Fedora
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autofs local map files identical but not identical to automount


I may be missing something, but this is the strangest problem I have ever had.

I have a new installation of RHEL 6.3. Autofs is using local files as maps
/etc/auto....
I have 2 map files that are identical at the byte level, checked by od. One file works in autofs startup, the other fails. The map is auto.web. No NIS is used!
auto.web:
WCR localhost:/netdata/wcr/WCR
WCRwebprojects localhost:/netdata/wcr/WCRwebprojects

the autofs startup error is:
master_do_mount: mounting /web
automount[3471]: automount_path_to_fifo: fifo name /var/run/autofs.fifo-web
automount[3471]: lookup_nss_read_map: reading map file /etc/auto.web
automount[3471]: lookup(file): file map /etc/auto.web missing or not readable
automount[3471]: do_read_map: lookup module file failed
automount[3471]: mount_autofs_indirect: failed to read map for /web
automount[3471]: handle_mounts: mount of /web failed!
puma automount[3471]: master_do_mount: failed to startup mount

The file can be
cp -a auto.web.bad auto.web and the problem is preserved.
cp auto.web.bad auto.web results in a good file.
Similarly mv carries the bad seed.
ls -li auto.web*
4851725 -rw-r--r--. 1 root root 101 Oct 25 14:43 auto.web
4851728 -rw-r--r--. 1 root root 101 Oct 25 14:43 auto.web.bad
4851723 -rw-r--r--. 1 root root 101 Oct 25 14:45 auto.web.good

ACLS and POSIX ACLS are identical.

the good file results in:
st_expire: state 1 path /web
automount[3751]: expire_proc: exp_proc = 139820784121600 path /web
puma automount[3751]: expire_cleanup: got thid 139820784121600 path /web stat 0
automount[3751]: expire_cleanup: sigchld: exp 139820784121600 finished, switching from 2 to 1
automount[3751]: st_ready: st_ready(): state = 2 path /web


The problem file survives a standard fsck on boot, no errors.
No hardware errors in /var/log/messages.

auto.master:
/misc /etc/auto.misc
/tools /etc/auto.local
/net /etc/auto.net
/home /etc/auto.home
/tools /etc/auto.local
/web /etc/auto.web --timeout=150
/netdata auto.data --timeout=150

What am I missing?
 
Old 10-25-2012, 08:12 PM   #2
chrism01
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Registered: Aug 2004
Location: Sydney
Distribution: Centos 7.7 (?), Centos 8.1
Posts: 17,802

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I'd check

1. ownerships (user+group)
2. perms
3. acls
4. SELinux

My guess is last (4.). 'cp -a' would preserve settings, but normally a newly created file inherits SELinux settings from the parent dir.
 
1 members found this post helpful.
Old 10-26-2012, 10:35 AM   #3
jwaldram
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Registered: Oct 2005
Distribution: RHEL 4, Fedora
Posts: 2

Original Poster
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solved

SELINUX was the culprit. This is a "trusted user" mobile workstation and I thought I had disabled SELINUX.
Thank you
 
  


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