Check disk health with SMART and NVMe evidence, not one green label
Check disk health Linux: inspect the effective state, interpret expected and abnormal results, make one bounded change, verify, and roll back safely.
Explain a du vs df mismatch before deleting more files
Du vs df mismatch: inspect the effective state, interpret expected and abnormal results, make one bounded change, verify, and roll back safely.
Extend an LVM logical volume only after proving every storage layer
Extend LVM logical volume: inspect the effective state, interpret expected and abnormal results, make one bounded change, verify, and roll back safely.
Find which Linux directory consumes inodes before cleanup
Find inode usage Linux: inspect the effective state, interpret expected and abnormal results, make one bounded change, verify, and roll back safely.
Find large files on Linux without crossing the wrong filesystem
Find large files Linux: inspect the effective state, interpret expected and abnormal results, make one bounded change, verify, and roll back safely.
Recover a read-only Linux filesystem without forcing unsafe writes
Linux filesystem read-only recovery: inspect the effective state, interpret expected and abnormal results, make one bounded change, verify, and roll back safely.
Use fstab nofail and automount without masking a missing disk
Fstab nofail automount: inspect the effective state, interpret expected and abnormal results, make one bounded change, verify, and roll back safely.
Mount a Linux disk by UUID without creating a boot failure
Mount disk by UUID Linux: inspect the effective state, interpret expected and abnormal results, make one bounded change, verify, and roll back safely.
Resize an ext4 filesystem after verifying the device boundary
Resize ext4 filesystem: inspect the effective state, interpret expected and abnormal results, make one bounded change, verify, and roll back safely.
Grow an XFS filesystem from its mount point, not a guessed device
Resize XFS filesystem: inspect the effective state, interpret expected and abnormal results, make one bounded change, verify, and roll back safely.