GNU bug report logs -
#38573
coreutils 8.31 tests/df/skip-rootfs.sh fail when using rootfs
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bug#38573
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(Thu, 12 Dec 2019 01:41:01 GMT)
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Rickard Nilsson <rickynils <at> gmail.com>
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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
I have build server where /proc/self/mountinfo looks like this:
1 1 0:2 / / rw - rootfs rootfs rw,size=959528k,nr_inodes=239882
24 1 0:23 / /dev/pts rw,relatime - devpts devpts rw,mode=600,ptmxmode=000
25 1 0:5 / /proc rw,relatime - proc proc rw
26 1 0:24 / /sys rw,relatime - sysfs sysfs rw
27 1 0:25 / /ro/store ro,nosuid,nodev,relatime - fuse.nixstore nixstore
ro,user_id=0,group_id=0,allow_other
28 1 0:26 / /tmp rw,relatime - tmpfs tmpfs rw,size=1971456k
29 1 0:27 / /nix/var rw,relatime - tmpfs tmpfs rw,size=1971456k,mode=755
30 1 0:28 / /dev/shm rw,nosuid,nodev - tmpfs tmpfs rw,size=1971456k
31 1 0:2 /nix/store /nix/store_initrd rw - rootfs rootfs
rw,size=959528k,nr_inodes=239882
35 1 0:29 / /nix/store rw,relatime - overlay overlay
rw,lowerdir=/ro/store:/nix/store_initrd,upperdir=/nix/var/store_rw,workdir=/nix/var/store_wrk
36 29 259:0 / /nix/var/nix/db rw,noatime - ext4 /dev/pmem0 rw,nobarrier
There's a lot of stuff there that probably is irrelevant for this issue.
What is special about the build server is that it actually uses the
original rootfs from its initrd. That is, it never mounts any other root
fs and runs switch_root or chroot or anything.
When I run df without options I get this:
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 959528 121988 837540 13% /
tmpfs 1971456 0 1971456 0% /tmp
tmpfs 1971456 0 1971456 0% /nix/var
tmpfs 1971456 0 1971456 0% /dev/shm
overlay 1971456 0 1971456 0% /nix/store
/dev/pmem0 1032088 2608 960668 1% /nix/var/nix/db
With the -a option I get:
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 959528 121988 837540 13% /
devpts 0 0 0 - /dev/pts
proc 0 0 0 - /proc
sysfs 0 0 0 - /sys
nixstore 0 0 0 - /ro/store
tmpfs 1971456 0 1971456 0% /tmp
tmpfs 1971456 0 1971456 0% /nix/var
tmpfs 1971456 0 1971456 0% /dev/shm
rootfs 959528 121988 837540 13% /nix/store_initrd
overlay 1971456 0 1971456 0% /nix/store
/dev/pmem0 1032088 2608 960668 1% /nix/var/nix/db
The test phase of the coreutils 8.31 build fails on this server with the
following failure:
FAIL: tests/df/skip-rootfs
==========================
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 5964104 121976 5842128 3% /
tmpfs 11980608 93744 11886864 1% /tmp
tmpfs 11980608 8 11980600 1% /nix/var
overlay 11980608 8 11980600 1% /nix/store
/dev/pmem0 1032088 10860 952416 2% /nix/var/nix/db
rootfs 5964104 121976 5842128 3% /
rootfs 5964104 121976 5842128 3% /nix/store_initrd
rootfs 5964104 121976 5842128 3% /
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 5964104 121976 5842128 3% /
tmpfs 11980608 93748 11886860 1% /tmp
tmpfs 11980608 8 11980600 1% /nix/var
overlay 11980608 8 11980600 1% /nix/store
/dev/pmem0 1032088 10860 952416 2% /nix/var/nix/db
rootfs 5964104 121976 5842128 3% /
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 5964104 121976 5842128 3% /
rootfs 5964104 121976 5842128 3% /
rootfs 5964104 121976 5842128 3% /nix/store_initrd
1 1 0:2 / / rw - rootfs rootfs rw,size=5964104k,nr_inodes=1491026
24 1 0:23 / /dev/pts rw,relatime - devpts devpts rw,mode=600,ptmxmode=000
25 1 0:5 / /proc rw,relatime - proc proc rw
26 1 0:24 / /sys rw,relatime - sysfs sysfs rw
27 1 0:25 / /ro/store ro,nosuid,nodev,relatime - fuse.nixstore nixstore
ro,user_id=0,group_id=0,allow_other
28 1 0:26 / /tmp rw,relatime - tmpfs tmpfs rw,size=11980608k
29 1 0:27 / /nix/var rw,relatime - tmpfs tmpfs rw,size=11980608k,mode=755
30 1 0:2 /nix/store /nix/store_initrd rw - rootfs rootfs
rw,size=5964104k,nr_inodes=1491026
34 1 0:28 / /nix/store rw,relatime - overlay overlay
rw,lowerdir=/ro/store:/nix/store_initrd,upperdir=/nix/var/store_rw,workdir=/nix/var/store_wrk
35 29 259:0 / /nix/var/nix/db rw,noatime - ext4 /dev/pmem0 rw,nobarrier
FAIL tests/df/skip-rootfs.sh (exit status: 1)
Is the df/skip-rootfs test case really correct? Looking at it, it seems
that rootfs entries should never appear in the df output except for when
specified with -t rootfs. But as you can see above, df does output
rootfs entries in other cases (and that does not seem wrong to me).
Best regards,
Rickard Nilsson
This bug report was last modified 4 years and 330 days ago.
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