This issue arises during the boot process of Ubuntu 22.04. Despite the system operating normally without any significant performance drawbacks, I consistently encounter a series of error messages related to mount unit failures. The system check reports the following:
/dev/nvme0n1p7: clean, 2041902/42721280 files, 67243365/170864384 blocks[ 2.464992] /var/lib/snapd/snaps/canonical-livepatch_229.snap: Can't open blockdev[ 2.464992] /var/lib/snapd/snaps/canonical-livepatch_229.snap: Can't open blockdev[ 2.468568] /var/lib/snapd/snaps/chromium_2614.snap: Can't open blockdev[ 2.471267] /var/lib/snapd/snaps/core_15925.snap: Can't open blockdev[ 2.472090] /var/lib/snapd/snaps/core_16202.snap: Can't open blockdev[ 2.482007] /var/lib/snapd/snaps/firefox_3068.snap: Can't open blockdev[ 2.484331] /var/lib/snapd/snaps/firefox_3206.snap: Can't open blockdev[ 2.487835] /var/lib/snapd/snaps/gnome-42-2204_120.snap: Can't open blockdev[ 2.490344] /var/lib/snapd/snaps/gnome-42-2204_141.snap: Can't open blockdev[ 2.498566] /var/lib/snapd/snaps/slack_89.snap: Can't open blockdev[FAILED] Failed to mount Mount unit for canonical-livepatch, revision 229.[FAILED] Failed to mount Mount unit for chromium, revision 2614.[FAILED] Failed to mount Mount unit for core, revision 15925.[FAILED] Failed to mount Mount unit for core, revision 16202.[FAILED] Failed to mount Mount unit for firefox, revision 3068.[FAILED] Failed to mount Mount unit for firefox, revision 3206.[FAILED] Failed to mount Mount unit for gnome-42-2204, revision 120.[FAILED] Failed to mount Mount unit for gnome-42-2204, revision 141.[FAILED] Failed to mount Mount unit for slack, revision 89.These messages indicate an inability to open blockdev for various snaps during boot, followed by failures to mount their respective units.
While these errors do not seem to hamper the functionality of the OS, I am concerned about potential underlying issues that may not be immediately evident. Additionally, I am interested in understanding the cause of these errors and how to resolve them for a cleaner boot process.
Here are the troubleshooting steps I've already attempted:
Checked the filesystem for errors using fsck.Ensured that all snap packages are updated to their latest versions.Attempted to manually remount the mentioned units with no success.I would be grateful for any insights into the following questions:
What could be the potential cause of these error messages during the boot process?Is there a way to fix these mount unit failures without impacting the current system stability?Are these errors indicative of an impending system issue that requires preemptive action?Any advice or diagnostic recommendations would be highly appreciated!
PS This's what I've got after snap list --all:
snap list --allName Version Rev Tracking Publisher Notesbare 1.0 5 latest/stable canonical✓ basecanonical-livepatch 10.8.2 278 latest/stable canonical✓ -canonical-livepatch 10.8.1 264 latest/stable canonical✓ disabledchromium 124.0.6367.60 2828 latest/stable canonical✓ disabledchromium 124.0.6367.91 2839 latest/stable canonical✓ -core 16-2.61.2 16928 latest/stable canonical✓ corecore - 16202 latest/stable canonical✓ disabled, brokencore18 20240416 2823 latest/stable canonical✓ basecore18 20231027 2812 latest/stable canonical✓ base, disabledcore20 20230801 2015 latest/stable canonical✓ base, disabledcore20 20240227 2264 latest/stable canonical✓ basecore22 20240408 1380 latest/stable canonical✓ basecore22 20240111 1122 latest/stable canonical✓ base, disabledcups 2.4.8-1 1047 latest/stable openprinting✓ -cups 2.4.7-8 1044 latest/stable openprinting✓ disabledfirefox 125.0.3-1 4209 latest/stable/...mozilla✓ -firefox 125.0.2-1 4173 latest/stable/...mozilla✓ disabledgnome-3-34-1804 0+git.3556cb3 93 latest/stable canonical✓ -gnome-3-38-2004 0+git.6f39565 140 latest/stable/...canonical✓ disabledgnome-3-38-2004 0+git.efb213a 143 latest/stable/...canonical✓ -gnome-42-2204 0+git.510a601 176 latest/stable canonical✓ -gnome-42-2204 - 141 latest/stable canonical✓ disabled, brokengtk-common-themes 0.1-81-g442e511 1535 latest/stable/...canonical✓ -keepassxc 2.7.6 1762 latest/stable keepassxreboot -kf5-5-105-qt-5-15-9-core22 5.105 11 latest/stable kde✓ -slack 4.36.138 130 latest/stable slack✓ disabledslack 4.37.101 142 latest/stable slack✓ -snap-store 41.3-71-g709398e 959 latest/stable/...canonical✓ disabledsnap-store 41.3-77-g7dc86c8 1113 latest/stable/...canonical✓ -snapd 2.61.1 20671 latest/stable canonical✓ snapd, disabledsnapd 2.62 21465 latest/stable canonical✓ snapdsnapd-desktop-integration 0.9 157 latest/stable/...canonical✓ -snapd-desktop-integration 0.9 83 latest/stable/...canonical✓ disabledenter code here