Bug 457940 - rpm annoying "failed to stat" warnings in chroot
rpm annoying "failed to stat" warnings in chroot
Product: Fedora
Classification: Fedora
Component: rpm (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Panu Matilainen
Fedora Extras Quality Assurance
Depends On:
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Reported: 2008-08-05 12:34 EDT by Warren Togami
Modified: 2009-12-18 01:16 EST (History)
3 users (show)

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Doc Type: Bug Fix
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Last Closed: 2009-12-18 01:16:58 EST
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Description Warren Togami 2008-08-05 12:34:05 EDT
/opt/ltsp/i386 contains a LTSP client chroot for read-only root NFS root boot.

/etc/mtab is symlinked to /proc/mounts as is standard for a read-only root chroot.

In my case, the host system has something mounted at /var/lib/mock.  It shows up in /proc/mounts.

yum and rpm operations within this chroot print this warning message:

error: failed to stat /var/lib/mock: No such file or directory

This is because rpm is seeing /etc/mtab and is confused that this directory does not exist when it is listed in /etc/mtab.

This seems not harmful, but it is annoying and incorrect.

What can we do about this?

1) Would it be harmful to just turn off the warning message?
2) mount tools in util-linux-ng actually ignores /etc/mtab contents if it is a symlink.
3) Perhaps a combination of #1 and #2?  Do not warn only if /etc/mtab is a symlink.
Comment 1 Jeff Johnson 2008-08-05 18:29:03 EDT
rpm stats all mounted file systems in order to do diskspace
accounting. Note that symlinks must be followed, and
may point to any mounted volume.

By symlinking /proc/mounts in a chroot, you are leaking
information from outside the chroot into the chroot for
non-existent (in the chroot) mount points.

Your easiest hack is to insure that all paths mentioned
in /proc/mounts actually exist in the chroot.

Or perhaps you can whine loudly enough to change the
message from RPMLOG_ERR to RPMLOG_DEBUG in rpm sources.
Comment 2 Bug Zapper 2008-11-25 21:40:11 EST
This bug appears to have been reported against 'rawhide' during the Fedora 10 development cycle.
Changing version to '10'.

More information and reason for this action is here:
Comment 3 Bug Zapper 2009-11-18 03:14:26 EST
This message is a reminder that Fedora 10 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 10.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '10'.

Package Maintainer: If you wish for this bug to remain open because you
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Comment 4 Bug Zapper 2009-12-18 01:16:58 EST
Fedora 10 changed to end-of-life (EOL) status on 2009-12-17. Fedora 10 is 
no longer maintained, which means that it will not receive any further 
security or bug fix updates. As a result we are closing this bug.

If you can reproduce this bug against a currently maintained version of 
Fedora please feel free to reopen this bug against that version.

Thank you for reporting this bug and we are sorry it could not be fixed.

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