6439 2014-06-12 18:10:38 +0000 package gzip tries to use hard links between /bin and /usr/bin 2017-08-03 13:34:15 +0000 1 1 11 Runtime General Runtime General Runtime 1.7 x86 Multiple RESOLVED WONTFIX Low normal Future 1 paulg randy.macleod richard.purdie --- --- No (bug/feature does not impact docs) oldest_to_newest 43897 0 paulg 2014-06-12 18:10:38 +0000 A common deployment is to have the root dir (i.e. / which contains /lib /bin /etc and so on) on a separate partition than /usr (and possibly /usr being shared over NFS or similar, or on a separate partition) However when I tried to deploy such a yocto rootfs, with / on sda1 and /usr on sdb1, I got the following error: # tar --numeric-owner -xpf ~/yocto-builder-intel-corei7-64.tar.bz2 tar: ./bin/gunzip.gzip: Cannot hard link to `./usr/bin/uncompress': Invalid cross-device link tar: Exiting with failure status due to previous errors # Looking in the tarball, I see the following: hrwxr-xr-x root/root 0 2014-06-11 14:52 ./bin/gunzip.gzip link to ./usr/bin/uncompress lrwxrwxrwx root/root 0 2014-06-12 10:58 ./bin/zcat -> /bin/zcat.gzip lrwxrwxrwx root/root 0 2014-06-12 10:58 ./bin/gunzip -> /bin/gunzip.gzip lrwxrwxrwx root/root 0 2014-06-12 10:58 ./bin/gzip -> /bin/gzip.gzip Note that there are three perfectly normal symlinks, and one offending hardlink which crosses the /bin vs. /usr/bin boundary. If it was also a symlink, this would not be a problem. Workaround is to manually create the softlink after seeing the deployment error. 44099 1 richard.purdie 2014-06-19 14:36:44 +0000 I've previously asked that rather than fixing these issues piecemeal, we come up with a comprehensive plan for the / and /usr split. WindRiver are the people we keep hearing request for this support from. 75607 2 randy.macleod 2017-08-03 13:34:15 +0000 We do not have anyone that requires this feature (separate root and usr). Most linux distros are going this way so it seems pointless to resist the trend. There a good summary of the Debian rational and starting point to read more here: https://lwn.net/Articles/670071/