Latest Blog
Why Can a Mounted Filesystem Create Files but Reject Renames?
A rename-only diagnosis covering directory rights, sticky bits, protected flags, cross-filesystem moves, SMB locks, filename rules, and verification.
Why Does a Btrfs Snapshot Stay Busy After Every App Container Stops?
A Btrfs diagnosis covering container lifecycle, hidden namespaces, lingering handles, bind mounts, active sends, nested subvolumes, and safe deletion.
Why Does a ZFS Send Resume Token Stop Working After the Destination Reboots?
A ZFS replication diagnosis covering saved receive state, token ownership, destination changes, source snapshots, compatibility, services, and abort paths.
Why Does Snapshot-Only Space Increase After Large Files Are Deleted?
A snapshot-space diagnosis covering shared blocks, unique usage, retention chains, reclaim estimates, and safe pruning without deleting recovery points blindly.
Why Does a Sparse Virtual Disk Consume Its Full Size After a Backup Restore?
A sparse-disk restore diagnosis covering holes, zero-filled blocks, copy behavior, image conversion, target support, preallocation, and safe compaction.
Why Does a NAS Report Free Space but Reject New Large Files?
A NAS capacity diagnosis for free-space scope, quotas, ZFS reservations, Btrfs metadata, inodes, filesystem limits, and temporary write overhead.
What Causes File Checksums to Change After Copying Through an SMB Share?
An SMB integrity diagnosis for changing source files, hash scope, oplocks, alternate streams, copy tools, destination rewrites, and read errors.
Why Does a SATA SSD Disappear After a Warm Reboot but Return After Power-Off?
A reboot-only SATA diagnosis covering BIOS visibility, AHCI ports, link reset state, ALPM, firmware, CRC errors, cable isolation, and safe recovery.
