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Storage / Stage 2 of 11

Mounting and fstab

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Step 7 of 7 · summary · 1 min

Summary

  • A directory without its volume accepts files, and a mounted volume covers them; findmnt --mountpoint and findmnt --target show what stands behind a directory.
  • An fstab line is matched against the volume with blkid, the table is checked with findmnt --verify, and the result with a mount and the volume's files.
  • A healthy volume with a wrong reference is neither formatted nor treated with fsck: you fix the table.
  • The night report at the start of the lesson never went anywhere: it sat in the directory on the root filesystem, and the mounted volume covered it.

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Reference for this lesson

Articles

  • mv — move or rename — The mv command renames a file or directory and moves it elsewhere; it silently replaces an existing target.
  • Mounting and fstab — Mounting filesystems: the mount command, persistent mounts in /etc/fstab, UUIDs and options.
  • Disk space: df, du, inode — Where the space and inodes went — df, du, finding large files, pitfalls.
  • Filesystems: ext4, xfs, fsck — Filesystems: creating one with mkfs, labels and UUIDs, fsck checks, choosing between ext4 and xfs.
Ubuntu 24.04
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