Red Hat Bugzilla – Bug 457940
rpm annoying "failed to stat" warnings in chroot
Last modified: 2009-12-18 01:16:58 EST
/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.
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.
This bug appears to have been reported against 'rawhide' during the Fedora 10 development cycle.
Changing version to '10'.
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