Package: src:linux Version: 4.0.2-1 Severity: normal Control: affects -1 ltsp-client-core LTSP has been using aufs to provide a writeable tmpfs layer on top of NFS since wheezy. With the switch to the overlay filesystem (after adjusting LTSP's initramfs-tools hooks to support overlay), it appears to fail due to an incompatibility with NFS. The following is from a failed initramfs-tools boot running the commands manually: BusyBox v1.22.1 (Debian 1:1.22.0-15) built-in shell (ash) Enter 'help' for a list of built-in commands. sh: can't access tty; job control turned off / # mount rootfs on / type rootfs (rw) sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime) proc on /proc type proc (rw,nosuid,nodev,noexec,relatime) udev on /dev type devtmpfs (rw,relatime,size=10240k,nr_inodes=61069,mode=755) devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmod e=000) tmpfs on /run type tmpfs (rw,nosuid,relatime,size=101168k,mode=755) 192.168.67.1:/opt/ltsp/amd64 on /rofs type nfs (ro,relatime,vers=3,rsize=524288, wsize=524288,namlen=255,hard,nolock,proto=tcp,port=2049,timeo=7,retrans=10,sec=s ys,local_lock=all,addr=192.168.67.1) tmpfs on /cow type tmpfs (rw,relatime,mode=755) / # mount -t overlay -o upperdir=/cow/up,lowerdir=/rofs,workdir=/cow/work overla y /root [ 49.944625] overlayfs: filesystem on '/rofs' not supported mount: mounting overlay on /root failed: Invalid argument It works fine when using a loopback mounted squashfs image over NFS, or with NBD+squashfs, but mounting NFS as a lowerdir directly appears to fail. This may be the same issue as mentioned here: https://lkml.org/lkml/2014/10/30/242 Though that hasn't received much response... live well, vagrant -- Package-specific info: ** Kernel log: boot messages should be attached ** Model information not available ** PCI devices: not available ** USB devices: not available -- System Information: Debian Release: stretch/sid APT prefers unstable APT policy: (500, 'unstable') Architecture: amd64 (x86_64) Kernel: Linux 3.16.0-4-amd64 Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: unable to detect Versions of packages linux-image-4.0.0-1-amd64 depends on: ii debconf [debconf-2.0] 1.5.56 ii initramfs-tools [linux-initramfs-tool] 0.120 ii kmod 20-1 ii linux-base 3.5 Versions of packages linux-image-4.0.0-1-amd64 recommends: ii firmware-linux-free 3.3 ii irqbalance 1.0.6-3 Versions of packages linux-image-4.0.0-1-amd64 suggests: pn debian-kernel-handbook <none> pn grub-pc | grub-efi | extlinux <none> pn linux-doc-4.0 <none> Versions of packages linux-image-4.0.0-1-amd64 is related to: pn firmware-atheros <none> pn firmware-bnx2 <none> pn firmware-bnx2x <none> pn firmware-brcm80211 <none> pn firmware-intelwimax <none> pn firmware-ipw2x00 <none> pn firmware-ivtv <none> pn firmware-iwlwifi <none> pn firmware-libertas <none> pn firmware-linux <none> pn firmware-linux-nonfree <none> pn firmware-myricom <none> pn firmware-netxen <none> pn firmware-qlogic <none> pn firmware-ralink <none> pn firmware-realtek <none> pn xen-hypervisor <none> -- debconf information excluded
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