Package: mountall Version: 2.54 Severity: normal Hello,
while debugging a boot issue I found this: - root is mounted by default readwrite on older kernels and readonly on recent kernels - unlike sysvinit upstart cannot handle readonly root when fstrab is not provided - the device specification in fstab must exactly match the device selected as root on kernel commandline, otherwise the root is not mounted - mountall is *supposed* to look at /lib/init/fstab which has a number of entries including an entry for root: /dev/root / rootfs defaults 0 1 In spite of this entry when root device is mounted readonly by kernel and root entry is missing in user supplied fstab or it does not exactly match the root device root device is not mounted and upstart stops without ever finishing the system boot. So either 1) this entry is bogus and should be specified differently 2) mountall is bogus and cannot interpret the entry correctly The easy workaround is, of course, to specify rw on the kernel commandline so upstart is not required to mount the root device and this never fails. Since /lib/init/fstab is a mountall private file it is ok if it does not exactly follow fstab(5) format so long as it does the job but it clearly does not. It is not feasible to ensure that the / specification in fstab always exactly matches what the kernel actually mounts as /. When using device name it may change due to adding and removing devices or inserting a removable medium into different slot. While it is possible to change the root device on kernel commandline in a bootloader it is not possible to change the fstab. Using UUID or label is not really good option either. On a stable finished system it's fine but for testing I need to reformat the medium from time to time and then the UUID and label is either random and does not match fstab resynced from the master copy or it is fixed and does not really identify the medium. -- System Information: Debian Release: 8.0 APT prefers testing APT policy: (900, 'testing'), (900, 'stable'), (400, 'unstable'), (300, 'experimental') Architecture: armhf (armv7l) Kernel: Linux 3.18.0-00138-g9c3b84a-dirty (SMP w/1 CPU core) Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: upstart (via init_is_upstart()) Versions of packages mountall depends on: ii coreutils 8.23-3 ii dpkg 1.17.21 ii libc6 2.19-13 ii libdbus-1-3 1.8.12-1 ii libnih-dbus1 1.0.3-4.3 ii libnih1 1.0.3-4.3 ii libudev1 215-7 ii makedev 2.3.1-93 ii plymouth 0.9.0-9 ii udev 215-7 mountall recommends no packages. mountall suggests no packages. -- no debconf information -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
