Hello, Maybe this is another overlayfs error, only for v4.13; it works well in previous version 4.12. When mounting two times the same mount, overlayfs will not list any directory entry anymore. Attached is the script log, Look for the line: +lnet-remaster:361:_chroot_mount: mount -o bind /tmp/ /tmp/live-net-remaster-Fg9o5x/chroot/tmp/ Comments: /tmp/ is already mounted in /tmp/live-net-remaster-Fg9o5x/chroot/tmp/ after mounting /tmp another time in the same location all overlay entries in the chroot directory disappear, no errors are listed in the log file, dmesg or journalctl. Thanks, Jordi Pujol i Palomer
+lnet-remaster:353:_chroot_mount: ls -lA /tmp/live-net-remaster-Fg9o5x/chroot total 24 drwxr-xr-x 2 root root 2398 ago 26 09:40 bin drwxr-xr-x 2 root root 148 set 12 10:44 boot drwxr-xr-x 2 root root 3 set 12 10:40 dev drwxr-xr-x 1 root root 4096 set 12 11:06 etc drwxr-xr-x 1 root root 4096 set 12 11:06 home lrwxrwxrwx 1 root root 33 jun 11 2016 initrd.img -> /boot/initrd.img-4.6.2-1-lnet-686 drwxr-xr-x 15 root root 399 ago 8 08:08 lib drwxr-xr-x 2 root root 3 set 24 2009 media drwxr-xr-x 2 root root 3 nov 26 2014 mnt drwxr-xr-x 2 root root 3 set 4 2009 opt dr-xr-xr-x 2 root root 3 set 12 10:40 proc drwxr-xr-x 1 root root 4096 set 12 11:06 root drwxr-xr-x 1 root root 4096 set 12 11:06 run drwxr-xr-x 2 root root 3304 ago 26 09:46 sbin drwxr-xr-x 2 root root 3 set 4 2009 srv dr-xr-xr-x 13 root root 0 set 12 11:06 sys drwxrwxrwt 11 root root 260 set 12 11:07 tmp drwxr-xr-x 1 root root 4096 des 19 2011 usr drwxr-xr-x 1 root root 4096 jun 30 2011 var lrwxrwxrwx 1 root root 29 jun 11 2016 vmlinuz -> boot/vmlinuz-4.6.2-1-lnet-686 +lnet-remaster:354:_chroot_mount: mount -o bind /dev/ /tmp/live-net-remaster-Fg9o5x/chroot/dev +lnet-remaster:355:_chroot_mount: ls -lA /tmp/live-net-remaster-Fg9o5x/chroot total 24 drwxr-xr-x 2 root root 2398 ago 26 09:40 bin drwxr-xr-x 2 root root 148 set 12 10:44 boot drwxr-xr-x 19 root root 3420 set 12 11:06 dev drwxr-xr-x 1 root root 4096 set 12 11:06 etc drwxr-xr-x 1 root root 4096 set 12 11:06 home lrwxrwxrwx 1 root root 33 jun 11 2016 initrd.img -> /boot/initrd.img-4.6.2-1-lnet-686 drwxr-xr-x 15 root root 399 ago 8 08:08 lib drwxr-xr-x 2 root root 3 set 24 2009 media drwxr-xr-x 2 root root 3 nov 26 2014 mnt drwxr-xr-x 2 root root 3 set 4 2009 opt dr-xr-xr-x 2 root root 3 set 12 10:40 proc drwxr-xr-x 1 root root 4096 set 12 11:06 root drwxr-xr-x 1 root root 4096 set 12 11:06 run drwxr-xr-x 2 root root 3304 ago 26 09:46 sbin drwxr-xr-x 2 root root 3 set 4 2009 srv dr-xr-xr-x 13 root root 0 set 12 11:06 sys drwxrwxrwt 11 root root 260 set 12 11:07 tmp drwxr-xr-x 1 root root 4096 des 19 2011 usr drwxr-xr-x 1 root root 4096 jun 30 2011 var lrwxrwxrwx 1 root root 29 jun 11 2016 vmlinuz -> boot/vmlinuz-4.6.2-1-lnet-686 +lnet-remaster:356:_chroot_mount: mount -o bind /dev/pts /tmp/live-net-remaster-Fg9o5x/chroot/dev/pts +lnet-remaster:357:_chroot_mount: ls -lA /tmp/live-net-remaster-Fg9o5x/chroot total 24 drwxr-xr-x 2 root root 2398 ago 26 09:40 bin drwxr-xr-x 2 root root 148 set 12 10:44 boot drwxr-xr-x 19 root root 3420 set 12 11:06 dev drwxr-xr-x 1 root root 4096 set 12 11:06 etc drwxr-xr-x 1 root root 4096 set 12 11:06 home lrwxrwxrwx 1 root root 33 jun 11 2016 initrd.img -> /boot/initrd.img-4.6.2-1-lnet-686 drwxr-xr-x 15 root root 399 ago 8 08:08 lib drwxr-xr-x 2 root root 3 set 24 2009 media drwxr-xr-x 2 root root 3 nov 26 2014 mnt drwxr-xr-x 2 root root 3 set 4 2009 opt dr-xr-xr-x 2 root root 3 set 12 10:40 proc drwxr-xr-x 1 root root 4096 set 12 11:06 root drwxr-xr-x 1 root root 4096 set 12 11:06 run drwxr-xr-x 2 root root 3304 ago 26 09:46 sbin drwxr-xr-x 2 root root 3 set 4 2009 srv dr-xr-xr-x 13 root root 0 set 12 11:06 sys drwxrwxrwt 11 root root 260 set 12 11:07 tmp drwxr-xr-x 1 root root 4096 des 19 2011 usr drwxr-xr-x 1 root root 4096 jun 30 2011 var lrwxrwxrwx 1 root root 29 jun 11 2016 vmlinuz -> boot/vmlinuz-4.6.2-1-lnet-686 +lnet-remaster:358:_chroot_mount: mount -o bind /sys /tmp/live-net-remaster-Fg9o5x/chroot/sys +lnet-remaster:359:_chroot_mount: ls -lA /tmp/live-net-remaster-Fg9o5x/chroot total 24 drwxr-xr-x 2 root root 2398 ago 26 09:40 bin drwxr-xr-x 2 root root 148 set 12 10:44 boot drwxr-xr-x 19 root root 3420 set 12 11:06 dev drwxr-xr-x 1 root root 4096 set 12 11:06 etc drwxr-xr-x 1 root root 4096 set 12 11:06 home lrwxrwxrwx 1 root root 33 jun 11 2016 initrd.img -> /boot/initrd.img-4.6.2-1-lnet-686 drwxr-xr-x 15 root root 399 ago 8 08:08 lib drwxr-xr-x 2 root root 3 set 24 2009 media drwxr-xr-x 2 root root 3 nov 26 2014 mnt drwxr-xr-x 2 root root 3 set 4 2009 opt dr-xr-xr-x 2 root root 3 set 12 10:40 proc drwxr-xr-x 1 root root 4096 set 12 11:06 root drwxr-xr-x 1 root root 4096 set 12 11:06 run drwxr-xr-x 2 root root 3304 ago 26 09:46 sbin drwxr-xr-x 2 root root 3 set 4 2009 srv dr-xr-xr-x 13 root root 0 set 12 11:06 sys drwxrwxrwt 11 root root 260 set 12 11:07 tmp drwxr-xr-x 1 root root 4096 des 19 2011 usr drwxr-xr-x 1 root root 4096 jun 30 2011 var lrwxrwxrwx 1 root root 29 jun 11 2016 vmlinuz -> boot/vmlinuz-4.6.2-1-lnet-686 +lnet-remaster:360:_chroot_mount: mount-list sysfs /sys sysfs nodev,noexec,nosuid,relatime,rw sysfs 0:17 proc /proc proc nodev,noexec,nosuid,relatime,rw proc 0:5 udev /dev devtmpfs mode=755,nosuid,nr_inodes=978526,relatime,rw,size=3914104k udev 0:6 devpts /dev/pts devpts gid=5,mode=620,noexec,nosuid,ptmxmode=000,relatime,rw devpts 0:18 tmpfs /run tmpfs mode=755,noexec,nosuid,relatime,rw,size=786156k tmpfs 0:19 tmpfs /lnet tmpfs mode=755,relatime,rw,size=7861540k tmpfs 0:20 /dev/sda1 /lnet/image ext2 errors=continue,noacl,noatime,nouser_xattr,ro /dev/sda1 8:1 /lnet/image/LneTXFCE64/00filesystem.squashfs /lnet/00filesystem.squashfs squashfs noatime,ro,loop=/dev/loop0 /dev/loop0 7:0 /lnet/image/LneTXFCE64/10interfaces.squashfs /lnet/10interfaces.squashfs squashfs noatime,ro,loop=/dev/loop1 /dev/loop1 7:1 /dev/sda2 /lnet/cowroot ext4 data=ordered,relatime,rw /dev/sda2 8:2 overlay / overlay index=off,lowerdir=/lnet/00filesystem.squashfs:/lnet/10interfaces.squashfs,relatime,rw,upperdir=/lnet/cowroot/LneTXFCECOW/upper,workdir=/lnet/cowroot/LneTXFCECOW/work overlay 0:21 tmpfs /tmp tmpfs nodev,nosuid,relatime,rw,size=7861540k,mode=1777 tmpfs 0:22 tmpfs /var/log tmpfs mode=755,nosuid,relatime,rw,size=7861540k tmpfs 0:23 tmpfs /var/tmp tmpfs nodev,nosuid,relatime,rw,size=7861540k,mode=1777 tmpfs 0:24 securityfs /sys/kernel/security securityfs nodev,noexec,nosuid,relatime,rw securityfs 0:7 tmpfs /dev/shm tmpfs nodev,nosuid,rw,mode=1777 tmpfs 0:25 tmpfs /run/lock tmpfs nodev,noexec,nosuid,relatime,rw,size=5120k,mode=1777 tmpfs 0:26 tmpfs /sys/fs/cgroup tmpfs mode=755,nodev,noexec,nosuid,ro tmpfs 0:27 cgroup /sys/fs/cgroup/unified cgroup2 nodev,noexec,nosuid,relatime,rw cgroup 0:28 cgroup /sys/fs/cgroup/systemd cgroup name=systemd,nodev,noexec,nosuid,relatime,rw,xattr cgroup 0:29 pstore /sys/fs/pstore pstore nodev,noexec,nosuid,relatime,rw pstore 0:30 cgroup /sys/fs/cgroup/cpu cgroup cpu,nodev,noexec,nosuid,relatime,rw cgroup 0:31 systemd-1 /proc/sys/fs/binfmt_misc autofs direct,fd=32,maxproto=5,minproto=5,pgrp=1,relatime,rw,timeout=0 systemd-1 0:32 /lnet/cowroot/LneTXFCEhome /home none rw,bind /dev/sda2 8:2 /lnet/image/LneTXFCE64 /boot none ro,bind /dev/sda1 8:1 debugfs /sys/kernel/debug debugfs relatime,rw debugfs 0:8 mqueue /dev/mqueue mqueue relatime,rw mqueue 0:16 hugetlbfs /dev/hugepages hugetlbfs pagesize=2M,relatime,rw hugetlbfs 0:33 /lnet/image/grub /boot/grub none ro,bind /dev/sda1 8:1 /lnet/image/grub /lnet/image/LneTXFCE64/grub none ro,bind /dev/sda1 8:1 /lnet/cowroot/JPLive /home/JPLive none rw,bind /dev/sda2 8:2 /lnet/cowroot/JPLive /lnet/cowroot/LneTXFCEhome/JPLive none rw,bind /dev/sda2 8:2 /lnet/cowroot/JPLive/apt-cache-amd64 /var/cache/apt none rw,bind /dev/sda2 8:2 /lnet/cowroot/JPLive/apt-lib-amd64 /var/lib/apt none rw,bind /dev/sda2 8:2 /lnet/cowroot/LneTXFCEhome/root /root none rw,bind /dev/sda2 8:2 /lnet/cowroot/JPLive/var-spool /var/spool none rw,bind /dev/sda2 8:2 tmpfs /run/user/1001 tmpfs gid=100,mode=700,nodev,nosuid,relatime,rw,size=786152k,uid=1001 tmpfs 0:37 /home/JPLive/LneT-Lite-686/iso/LneT-Lite/00filesystem.squashfs /tmp/live-net-remaster-Fg9o5x/image/00filesystem.squashfs squashfs relatime,ro,loop=/dev/loop2 /dev/loop2 7:2 overlay /tmp/live-net-remaster-Fg9o5x/chroot overlay index=off,lowerdir=/tmp/live-net-remaster-Fg9o5x/image/00filesystem.squashfs,relatime,rw,upperdir=/home/tmp.uqIFpoBStR/upper,workdir=/home/tmp.uqIFpoBStR/work overlay 0:39 /sys/ /tmp/live-net-remaster-Fg9o5x/chroot/sys none rw,bind sysfs 0:17 /tmp/ /tmp/live-net-remaster-Fg9o5x/chroot/tmp none rw,bind tmpfs 0:22 /dev/ /tmp/live-net-remaster-Fg9o5x/chroot/dev none rw,bind udev 0:6 /dev/pts/ /tmp/live-net-remaster-Fg9o5x/chroot/dev/pts none rw,bind devpts 0:18 /dev/pts/ /dev/pts none rw,bind devpts 0:18 /sys/ /tmp/live-net-remaster-Fg9o5x/chroot/sys none rw,bind sysfs 0:17 /sys/ /sys none rw,bind sysfs 0:17 +lnet-remaster:361:_chroot_mount: mount -o bind /tmp/ /tmp/live-net-remaster-Fg9o5x/chroot/tmp/ +lnet-remaster:362:_chroot_mount: ls -lA /tmp/live-net-remaster-Fg9o5x/chroot total 0 +lnet-remaster:363:_chroot_mount: mount-list sysfs /sys sysfs nodev,noexec,nosuid,relatime,rw sysfs 0:17 proc /proc proc nodev,noexec,nosuid,relatime,rw proc 0:5 udev /dev devtmpfs mode=755,nosuid,nr_inodes=978526,relatime,rw,size=3914104k udev 0:6 devpts /dev/pts devpts gid=5,mode=620,noexec,nosuid,ptmxmode=000,relatime,rw devpts 0:18 tmpfs /run tmpfs mode=755,noexec,nosuid,relatime,rw,size=786156k tmpfs 0:19 tmpfs /lnet tmpfs mode=755,relatime,rw,size=7861540k tmpfs 0:20 /dev/sda1 /lnet/image ext2 errors=continue,noacl,noatime,nouser_xattr,ro /dev/sda1 8:1 /lnet/image/LneTXFCE64/00filesystem.squashfs /lnet/00filesystem.squashfs squashfs noatime,ro,loop=/dev/loop0 /dev/loop0 7:0 /lnet/image/LneTXFCE64/10interfaces.squashfs /lnet/10interfaces.squashfs squashfs noatime,ro,loop=/dev/loop1 /dev/loop1 7:1 /dev/sda2 /lnet/cowroot ext4 data=ordered,relatime,rw /dev/sda2 8:2 overlay / overlay index=off,lowerdir=/lnet/00filesystem.squashfs:/lnet/10interfaces.squashfs,relatime,rw,upperdir=/lnet/cowroot/LneTXFCECOW/upper,workdir=/lnet/cowroot/LneTXFCECOW/work overlay 0:21 tmpfs /tmp tmpfs nodev,nosuid,relatime,rw,size=7861540k,mode=1777 tmpfs 0:22 tmpfs /var/log tmpfs mode=755,nosuid,relatime,rw,size=7861540k tmpfs 0:23 tmpfs /var/tmp tmpfs nodev,nosuid,relatime,rw,size=7861540k,mode=1777 tmpfs 0:24 securityfs /sys/kernel/security securityfs nodev,noexec,nosuid,relatime,rw securityfs 0:7 tmpfs /dev/shm tmpfs nodev,nosuid,rw,mode=1777 tmpfs 0:25 tmpfs /run/lock tmpfs nodev,noexec,nosuid,relatime,rw,size=5120k,mode=1777 tmpfs 0:26 tmpfs /sys/fs/cgroup tmpfs mode=755,nodev,noexec,nosuid,ro tmpfs 0:27 cgroup /sys/fs/cgroup/unified cgroup2 nodev,noexec,nosuid,relatime,rw cgroup 0:28 cgroup /sys/fs/cgroup/systemd cgroup name=systemd,nodev,noexec,nosuid,relatime,rw,xattr cgroup 0:29 pstore /sys/fs/pstore pstore nodev,noexec,nosuid,relatime,rw pstore 0:30 cgroup /sys/fs/cgroup/cpu cgroup cpu,nodev,noexec,nosuid,relatime,rw cgroup 0:31 systemd-1 /proc/sys/fs/binfmt_misc autofs direct,fd=32,maxproto=5,minproto=5,pgrp=1,relatime,rw,timeout=0 systemd-1 0:32 /lnet/cowroot/LneTXFCEhome /home none rw,bind /dev/sda2 8:2 /lnet/image/LneTXFCE64 /boot none ro,bind /dev/sda1 8:1 debugfs /sys/kernel/debug debugfs relatime,rw debugfs 0:8 mqueue /dev/mqueue mqueue relatime,rw mqueue 0:16 hugetlbfs /dev/hugepages hugetlbfs pagesize=2M,relatime,rw hugetlbfs 0:33 /lnet/image/grub /boot/grub none ro,bind /dev/sda1 8:1 /lnet/image/grub /lnet/image/LneTXFCE64/grub none ro,bind /dev/sda1 8:1 /lnet/cowroot/JPLive /home/JPLive none rw,bind /dev/sda2 8:2 /lnet/cowroot/JPLive /lnet/cowroot/LneTXFCEhome/JPLive none rw,bind /dev/sda2 8:2 /lnet/cowroot/JPLive/apt-cache-amd64 /var/cache/apt none rw,bind /dev/sda2 8:2 /lnet/cowroot/JPLive/apt-lib-amd64 /var/lib/apt none rw,bind /dev/sda2 8:2 /lnet/cowroot/LneTXFCEhome/root /root none rw,bind /dev/sda2 8:2 /lnet/cowroot/JPLive/var-spool /var/spool none rw,bind /dev/sda2 8:2 tmpfs /run/user/1001 tmpfs gid=100,mode=700,nodev,nosuid,relatime,rw,size=786152k,uid=1001 tmpfs 0:37 /home/JPLive/LneT-Lite-686/iso/LneT-Lite/00filesystem.squashfs /tmp/live-net-remaster-Fg9o5x/image/00filesystem.squashfs squashfs relatime,ro,loop=/dev/loop2 /dev/loop2 7:2 overlay /tmp/live-net-remaster-Fg9o5x/chroot overlay index=off,lowerdir=/tmp/live-net-remaster-Fg9o5x/image/00filesystem.squashfs,relatime,rw,upperdir=/home/tmp.uqIFpoBStR/upper,workdir=/home/tmp.uqIFpoBStR/work overlay 0:39 /sys/ /tmp/live-net-remaster-Fg9o5x/chroot/sys none rw,bind sysfs 0:17 /tmp/ /tmp/live-net-remaster-Fg9o5x/chroot/tmp none rw,bind tmpfs 0:22 /dev/ /tmp/live-net-remaster-Fg9o5x/chroot/dev none rw,bind udev 0:6 /dev/pts/ /tmp/live-net-remaster-Fg9o5x/chroot/dev/pts none rw,bind devpts 0:18 /dev/pts/ /dev/pts none rw,bind devpts 0:18 /sys/ /tmp/live-net-remaster-Fg9o5x/chroot/sys none rw,bind sysfs 0:17 /sys/ /sys none rw,bind sysfs 0:17 /tmp/ /tmp/live-net-remaster-Fg9o5x/chroot/tmp none rw,bind tmpfs 0:22 /tmp/ /tmp none rw,bind tmpfs 0:22 +lnet-remaster:364:_chroot_mount: '[' -z 'mkdir -p ${BASE_CHROOT}/home/JPLive; mount -o bind /home/JPLive ${BASE_CHROOT}/home/JPLive' ']' +lnet-remaster:365:_chroot_mount: eval mkdir -p '${BASE_CHROOT}/home/JPLive;' mount -o bind /home/JPLive '${BASE_CHROOT}/home/JPLive' ++lnet-remaster:365:_chroot_mount: mkdir -p /tmp/live-net-remaster-Fg9o5x/chroot/home/JPLive ++lnet-remaster:365:_chroot_mount: mount -o bind /home/JPLive /tmp/live-net-remaster-Fg9o5x/chroot/home/JPLive +lnet-remaster:366:_chroot_mount: ls -lA /tmp/live-net-remaster-Fg9o5x/chroot total 0 drwxr-xr-x 3 root root 60 set 12 11:07 home +lnet-remaster:368:_chroot_mount: export DISPLAY=:0.0 +lnet-remaster:368:_chroot_mount: DISPLAY=:0.0 +lnet-remaster:369:_chroot_mount: export HOME=/root +lnet-remaster:369:_chroot_mount: HOME=/root +lnet-remaster:370:_chroot_mount: export LC_ALL=C +lnet-remaster:370:_chroot_mount: LC_ALL=C +lnet-remaster:372:_chroot_mount: '[' '!' -L /tmp/live-net-remaster-Fg9o5x/chroot/etc/mtab ']' +lnet-remaster:374:_chroot_mount: rm -f /tmp/live-net-remaster-Fg9o5x/chroot/etc/mtab +lnet-remaster:375:_chroot_mount: ln -fs /proc/mounts /tmp/live-net-remaster-Fg9o5x/chroot/etc/mtab +lnet-remaster:375:_chroot_mount: : +lnet-remaster:377:_chroot_mount: cp /etc/hosts /tmp/live-net-remaster-Fg9o5x/chroot/etc/ +lnet-remaster:378:_chroot_mount: ls -lA /tmp/live-net-remaster-Fg9o5x/chroot total 0 drwxr-xr-x 3 root root 60 Sep 12 11:07 home +lnet-remaster:380:_chroot_mount: chroot /tmp/live-net-remaster-Fg9o5x/chroot/ mount -t proc none /proc +lnet-remaster:381:_chroot_mount: ls -lA /tmp/live-net-remaster-Fg9o5x/chroot total 0 drwxr-xr-x 3 root root 60 Sep 12 11:07 home +lnet-remaster:382:_chroot_mount: : +lnet-remaster:736:_prepare_web_database: _chroot_mount_compress +lnet-remaster:395:_chroot_mount_compress: mkdir -p /tmp/live-net-remaster-Fg9o5x/chroot/var/tmp/mnt/ +lnet-remaster:396:_chroot_mount_compress: mount -o bind /home/JPLive/LneT-Lite-686 /tmp/live-net-remaster-Fg9o5x/chroot/var/tmp/mnt/ +lnet-remaster:397:_chroot_mount_compress: ls -lA /tmp/live-net-remaster-Fg9o5x/chroot total 0 drwxr-xr-x 3 root root 60 Sep 12 11:07 home drwxr-xr-x 3 root root 60 Sep 12 11:07 var +lnet-remaster:398:_chroot_mount_compress: : +lnet-remaster:737:_prepare_web_database: chroot /tmp/live-net-remaster-Fg9o5x/chroot/ sh +lnet-remaster:857:_prepare_web_database: echo 'Error: when preparing web database.' +lnet-remaster:858:_prepare_web_database: return 1 +lnet-remaster:1505: exit 1