[Kernel-packages] [Bug 1463120] Re: Failure to boot if fstab disk mounts fail
Could fstab default mount options be changed so that, unless otherwise specified, failed mount attempts would skip that filesystem and keep booting (logging an error), instead of dropping to an inaccessible recovery console? This would let the fstab be fixed with minimal hassle in a headless environment, so long as the broken mount isn't /boot or /. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1463120 Title: Failure to boot if fstab disk mounts fail Status in linux package in Ubuntu: Confirmed Bug description: I found this on my main 15.04 desktop but have reproduced it in a VM: 1. Install Ubuntu 15.04 (I included updates and non-free but I doubt that matters). 2. Add a bogus entry to /etc/fstab, eg: /dev/sdd1 /mnt/sdd1 ext4 errors=remount-ro 0 0 Note that /mnd/sdd1 exists but /dev/sdd1 does not 3. Reboot Expected: Failure to mount /dev/sdd1 reported and option to boot without mounting it Actual: System appears to hang, although it will eventually present a root terminal (with no indication of the cause of the problem). It appears to hang prior to switching graphical mode, with the result that any warnings/errors that are present on all boots but invisible because the screen clears before they're seen become visible for the first time incorrectly suggesting they are the cause of the problem. Removing (or commenting out) the problematic entries and rebooting allows the system to boot. HOWEVER: The grub boot menu now appears and any pre-existing menu timeout and default action seems to have been lost; it's now necessary to select a boot option on each boot. This may be a separate bug (or feature?). My actual case: I have external drives permanently connected via USB, however the USB card appears to have failed hence the drives are not accessible. With no clues (and being unfamiliar to systemd) working out why the system wouldn't boot was a tough job. --- ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: mark 1382 F pulseaudio DistroRelease: Ubuntu 15.04 HibernationDevice: RESUME=UUID=76b7b79b-0cdd-4605-bc58-381fad8fa67f InstallationDate: Installed on 2015-06-08 (4 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) IwConfig: eth0 no wireless extensions. lono wireless extensions. Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 002: ID 80ee:0021 VirtualBox USB Tablet Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: innotek GmbH VirtualBox Package: linux (not installed) ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-20-generic root=UUID=53f2fcea-e84c-4736-ac69-f34305a63432 ro quiet splash ProcVersionSignature: Ubuntu 3.19.0-20.20-generic 3.19.8 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.19.0-20-generic N/A linux-backports-modules-3.19.0-20-generic N/A linux-firmware 1.143.1 RfKill: Tags: vivid UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' Uname: Linux 3.19.0-20-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 12/01/2006 dmi.bios.vendor: innotek GmbH dmi.bios.version: VirtualBox dmi.board.name: VirtualBox dmi.board.vendor: Oracle Corporation dmi.board.version: 1.2 dmi.chassis.type: 1 dmi.chassis.vendor: Oracle Corporation dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr: dmi.product.name: VirtualBox dmi.product.version: 1.2 dmi.sys.vendor: innotek GmbH To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1463120/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1463120] Re: Failure to boot if fstab disk mounts fail
Thanks for your attention on this bug, Joseph. I'm compiling the new kernel, now, and will let you know as soon as I have a test result. As far as I know, all 16.04 kernel versions exhibit this problem; but I haven't done any testing on Ubuntu 15.X. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1463120 Title: Failure to boot if fstab disk mounts fail Status in linux package in Ubuntu: Confirmed Bug description: I found this on my main 15.04 desktop but have reproduced it in a VM: 1. Install Ubuntu 15.04 (I included updates and non-free but I doubt that matters). 2. Add a bogus entry to /etc/fstab, eg: /dev/sdd1 /mnt/sdd1 ext4 errors=remount-ro 0 0 Note that /mnd/sdd1 exists but /dev/sdd1 does not 3. Reboot Expected: Failure to mount /dev/sdd1 reported and option to boot without mounting it Actual: System appears to hang, although it will eventually present a root terminal (with no indication of the cause of the problem). It appears to hang prior to switching graphical mode, with the result that any warnings/errors that are present on all boots but invisible because the screen clears before they're seen become visible for the first time incorrectly suggesting they are the cause of the problem. Removing (or commenting out) the problematic entries and rebooting allows the system to boot. HOWEVER: The grub boot menu now appears and any pre-existing menu timeout and default action seems to have been lost; it's now necessary to select a boot option on each boot. This may be a separate bug (or feature?). My actual case: I have external drives permanently connected via USB, however the USB card appears to have failed hence the drives are not accessible. With no clues (and being unfamiliar to systemd) working out why the system wouldn't boot was a tough job. --- ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: mark 1382 F pulseaudio DistroRelease: Ubuntu 15.04 HibernationDevice: RESUME=UUID=76b7b79b-0cdd-4605-bc58-381fad8fa67f InstallationDate: Installed on 2015-06-08 (4 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) IwConfig: eth0 no wireless extensions. lono wireless extensions. Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 002: ID 80ee:0021 VirtualBox USB Tablet Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: innotek GmbH VirtualBox Package: linux (not installed) ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-20-generic root=UUID=53f2fcea-e84c-4736-ac69-f34305a63432 ro quiet splash ProcVersionSignature: Ubuntu 3.19.0-20.20-generic 3.19.8 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.19.0-20-generic N/A linux-backports-modules-3.19.0-20-generic N/A linux-firmware 1.143.1 RfKill: Tags: vivid UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' Uname: Linux 3.19.0-20-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 12/01/2006 dmi.bios.vendor: innotek GmbH dmi.bios.version: VirtualBox dmi.board.name: VirtualBox dmi.board.vendor: Oracle Corporation dmi.board.version: 1.2 dmi.chassis.type: 1 dmi.chassis.vendor: Oracle Corporation dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr: dmi.product.name: VirtualBox dmi.product.version: 1.2 dmi.sys.vendor: innotek GmbH To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1463120/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1463120] Re: Failure to boot if fstab disk mounts fail
(New kernel is still compiling...) I just did a test with a fully-patched, newly spun-up Ubuntu Server 14.04 AWS instance, and the behavior seems to be present with kernel 3.13.0-107. I can't verify all of the symptoms described by the reporter, because I don't have physical access; but I get "connection refused" when trying to SSH into it, after making an intentionally-bad edit to /etc/fstab. For completeness, this is the bad edit I made: /home/ubuntu/test.img /mnt ext4 defaults 0 0 The file referenced was created with: dd if=/dev/zero of=/home/ubuntu/test.img bs=1M count=20 When attempting to mount this file from the command-line, it produces a "wrong filesystem type" error, as expected. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1463120 Title: Failure to boot if fstab disk mounts fail Status in linux package in Ubuntu: Confirmed Bug description: I found this on my main 15.04 desktop but have reproduced it in a VM: 1. Install Ubuntu 15.04 (I included updates and non-free but I doubt that matters). 2. Add a bogus entry to /etc/fstab, eg: /dev/sdd1 /mnt/sdd1 ext4 errors=remount-ro 0 0 Note that /mnd/sdd1 exists but /dev/sdd1 does not 3. Reboot Expected: Failure to mount /dev/sdd1 reported and option to boot without mounting it Actual: System appears to hang, although it will eventually present a root terminal (with no indication of the cause of the problem). It appears to hang prior to switching graphical mode, with the result that any warnings/errors that are present on all boots but invisible because the screen clears before they're seen become visible for the first time incorrectly suggesting they are the cause of the problem. Removing (or commenting out) the problematic entries and rebooting allows the system to boot. HOWEVER: The grub boot menu now appears and any pre-existing menu timeout and default action seems to have been lost; it's now necessary to select a boot option on each boot. This may be a separate bug (or feature?). My actual case: I have external drives permanently connected via USB, however the USB card appears to have failed hence the drives are not accessible. With no clues (and being unfamiliar to systemd) working out why the system wouldn't boot was a tough job. --- ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: mark 1382 F pulseaudio DistroRelease: Ubuntu 15.04 HibernationDevice: RESUME=UUID=76b7b79b-0cdd-4605-bc58-381fad8fa67f InstallationDate: Installed on 2015-06-08 (4 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) IwConfig: eth0 no wireless extensions. lono wireless extensions. Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 002: ID 80ee:0021 VirtualBox USB Tablet Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: innotek GmbH VirtualBox Package: linux (not installed) ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-20-generic root=UUID=53f2fcea-e84c-4736-ac69-f34305a63432 ro quiet splash ProcVersionSignature: Ubuntu 3.19.0-20.20-generic 3.19.8 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.19.0-20-generic N/A linux-backports-modules-3.19.0-20-generic N/A linux-firmware 1.143.1 RfKill: Tags: vivid UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' Uname: Linux 3.19.0-20-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 12/01/2006 dmi.bios.vendor: innotek GmbH dmi.bios.version: VirtualBox dmi.board.name: VirtualBox dmi.board.vendor: Oracle Corporation dmi.board.version: 1.2 dmi.chassis.type: 1 dmi.chassis.vendor: Oracle Corporation dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr: dmi.product.name: VirtualBox dmi.product.version: 1.2 dmi.sys.vendor: innotek GmbH To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1463120/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1463120] Re: Failure to boot if fstab disk mounts fail
I've tested this with kernel 4.10-rc3 in a local VirtualBox VM (Ubuntu Server 16.04), with the same fstab error as above, and am able to confirm most of the symptoms described by the reporter. When attempting to 'mount -a', it presents the expected "wrong filesystem type" error, but doesn't render the system unresponsive. Upon reboot, however, it drops into a maintenance console without presenting an error about a failed mount attempt. Consequently, the server would be unreachable for maintenance via SSH. 'journalctl -xb' provides a log that contains an error about the failed mount attempt, but doesn't point to it as the reason for dropping into a maintenance terminal, and it isn't the last thing logged. After fixing fstab (which requires physical access) and rebooting ('reboot' from the maintenance console), GRUB does still have a countdown, but it starts around 10 seconds, instead of 3 seconds (~3 seconds is the default for Ubuntu Server). Otherwise, at this point, the system is able to boot up automatically, without issue. After rebooting a second time (from the normal BASH prompt), the GRUB countdown is back to ~3 seconds, and the system boots normally (automatically), from there. Thanks, again, for helping to resolve this bug. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1463120 Title: Failure to boot if fstab disk mounts fail Status in linux package in Ubuntu: Confirmed Bug description: I found this on my main 15.04 desktop but have reproduced it in a VM: 1. Install Ubuntu 15.04 (I included updates and non-free but I doubt that matters). 2. Add a bogus entry to /etc/fstab, eg: /dev/sdd1 /mnt/sdd1 ext4 errors=remount-ro 0 0 Note that /mnd/sdd1 exists but /dev/sdd1 does not 3. Reboot Expected: Failure to mount /dev/sdd1 reported and option to boot without mounting it Actual: System appears to hang, although it will eventually present a root terminal (with no indication of the cause of the problem). It appears to hang prior to switching graphical mode, with the result that any warnings/errors that are present on all boots but invisible because the screen clears before they're seen become visible for the first time incorrectly suggesting they are the cause of the problem. Removing (or commenting out) the problematic entries and rebooting allows the system to boot. HOWEVER: The grub boot menu now appears and any pre-existing menu timeout and default action seems to have been lost; it's now necessary to select a boot option on each boot. This may be a separate bug (or feature?). My actual case: I have external drives permanently connected via USB, however the USB card appears to have failed hence the drives are not accessible. With no clues (and being unfamiliar to systemd) working out why the system wouldn't boot was a tough job. --- ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: mark 1382 F pulseaudio DistroRelease: Ubuntu 15.04 HibernationDevice: RESUME=UUID=76b7b79b-0cdd-4605-bc58-381fad8fa67f InstallationDate: Installed on 2015-06-08 (4 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) IwConfig: eth0 no wireless extensions. lono wireless extensions. Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 002: ID 80ee:0021 VirtualBox USB Tablet Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: innotek GmbH VirtualBox Package: linux (not installed) ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-20-generic root=UUID=53f2fcea-e84c-4736-ac69-f34305a63432 ro quiet splash ProcVersionSignature: Ubuntu 3.19.0-20.20-generic 3.19.8 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.19.0-20-generic N/A linux-backports-modules-3.19.0-20-generic N/A linux-firmware 1.143.1 RfKill: Tags: vivid UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' Uname: Linux 3.19.0-20-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 12/01/2006 dmi.bios.vendor: innotek GmbH dmi.bios.version: VirtualBox dmi.board.name: VirtualBox dmi.board.vendor: Oracle Corporation dmi.board.version: 1.2 dmi.chassis.type: 1 dmi.chassis.vendor: Oracle Corporation dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.
[Kernel-packages] [Bug 1463120] Re: Failure to boot if fstab disk mounts fail
Hi, Tim. I ran into this issue a few days ago on a local server where I'd made an fstab mistake. The behavior seems un-changed from previous observations (drops to the same recovery console). I believe this would still result in an un-bootable cloud VM. For those who are experiencing the issue in the cloud, I did find a workaround. It's a hassle but it allows the VM to work again. 1. Shut down the VM. 2. Detach the system volume from the VM. 3. Attach the system volume to a different VM as a secondary volume. Mount it. 4. Log into the other VM and edit fstab on the mounted secondary volume. 5. Unmount and detach the secondary volume from the other VM. 6. Re-attach the volume to the original VM as its system volume. 7. Boot. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1463120 Title: Failure to boot if fstab disk mounts fail Status in linux package in Ubuntu: Confirmed Bug description: I found this on my main 15.04 desktop but have reproduced it in a VM: 1. Install Ubuntu 15.04 (I included updates and non-free but I doubt that matters). 2. Add a bogus entry to /etc/fstab, eg: /dev/sdd1 /mnt/sdd1 ext4 errors=remount-ro 0 0 Note that /mnd/sdd1 exists but /dev/sdd1 does not 3. Reboot Expected: Failure to mount /dev/sdd1 reported and option to boot without mounting it Actual: System appears to hang, although it will eventually present a root terminal (with no indication of the cause of the problem). It appears to hang prior to switching graphical mode, with the result that any warnings/errors that are present on all boots but invisible because the screen clears before they're seen become visible for the first time incorrectly suggesting they are the cause of the problem. Removing (or commenting out) the problematic entries and rebooting allows the system to boot. HOWEVER: The grub boot menu now appears and any pre-existing menu timeout and default action seems to have been lost; it's now necessary to select a boot option on each boot. This may be a separate bug (or feature?). My actual case: I have external drives permanently connected via USB, however the USB card appears to have failed hence the drives are not accessible. With no clues (and being unfamiliar to systemd) working out why the system wouldn't boot was a tough job. --- ApportVersion: 2.17.2-0ubuntu1.1 Architecture: amd64 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: mark 1382 F pulseaudio DistroRelease: Ubuntu 15.04 HibernationDevice: RESUME=UUID=76b7b79b-0cdd-4605-bc58-381fad8fa67f InstallationDate: Installed on 2015-06-08 (4 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) IwConfig: eth0 no wireless extensions. lono wireless extensions. Lsusb: Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 002: ID 80ee:0021 VirtualBox USB Tablet Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub MachineType: innotek GmbH VirtualBox Package: linux (not installed) ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-20-generic root=UUID=53f2fcea-e84c-4736-ac69-f34305a63432 ro quiet splash ProcVersionSignature: Ubuntu 3.19.0-20.20-generic 3.19.8 PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: Home directory not accessible: Permission denied No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: linux-restricted-modules-3.19.0-20-generic N/A linux-backports-modules-3.19.0-20-generic N/A linux-firmware 1.143.1 RfKill: Tags: vivid UdevLog: Error: [Errno 2] No such file or directory: '/var/log/udev' Uname: Linux 3.19.0-20-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 12/01/2006 dmi.bios.vendor: innotek GmbH dmi.bios.version: VirtualBox dmi.board.name: VirtualBox dmi.board.vendor: Oracle Corporation dmi.board.version: 1.2 dmi.chassis.type: 1 dmi.chassis.vendor: Oracle Corporation dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:rvnOracleCorporation:rnVirtualBox:rvr1.2:cvnOracleCorporation:ct1:cvr: dmi.product.name: VirtualBox dmi.product.version: 1.2 dmi.sys.vendor: innotek GmbH To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1463120/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp