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iBiz might not win the AI race, but analysts say it's focusing on features people may actually use

Hendon Hall was the hotel, eight miles from Wembley, where Sir Alf Ramsay's 1966 squad was based, and is a residential care home now where at least six people in the crowd for the final live.

Matthew Curtis, from Stratford-upon-Avon, has styled the tresses of runway models and reality TV stars alike during a career spanning 25 years.

CCTV footage appears to capture a pro-Palestine protester scaling Big Ben, in footage that was shown at Southwark Crown Court.

CCTV footage appears to capture a pro-Palestine protester scaling Big Ben, in footage that was shown at Southwark Crown Court.

by George Whittaker

The Btrfs filesystem continues to receive significant performance tuning, and one of the latest areas of focus is snapshot deletion performance. While Btrfs snapshots have long been praised for their speed, flexibility, and efficient use of storage, deleting large numbers of snapshots has historically been one of the filesystem’s most resource-intensive operations.

Recent kernel development efforts are helping address that problem by improving metadata handling, reducing lock contention, and streamlining internal cleanup processes. The result is faster snapshot removal and less disruption on systems that rely heavily on snapshots for backups, rollbacks, and system recovery.

Why Snapshot Deletion Has Been Challenging

Btrfs is a copy-on-write (CoW) filesystem that stores data and metadata in a highly interconnected structure. This design enables many advanced features, including:

• Instant snapshots
• Subvolumes
• Checksumming
• Compression
• Efficient data sharing between snapshots

However, the same architecture that makes snapshots so efficient to create can make them more complex to remove. When a snapshot is deleted, Btrfs must determine which blocks are still referenced by other snapshots and which can be safely reclaimed. On systems with many snapshots, this process can generate significant metadata activity.

Recent Performance Improvements

Developers have been working to reduce overhead associated with Btrfs metadata operations, which directly impacts snapshot cleanup performance.

Recent kernel updates include:

• Reduced lock contention during extent tree operations
• More efficient extent buffer traversal
• Improved handling of internal filesystem structures
• Reduced contention during metadata searches
• General transaction and cleanup optimizations

These changes help the filesystem spend less time waiting on internal locks and more time performing actual cleanup work.

Less Impact During Cleanup Operations

One common complaint among Btrfs users has been elevated I/O activity during large snapshot deletion jobs.

On systems that maintain dozens, or even hundreds, of snapshots, cleanup operations could temporarily increase:

• Disk activity
• CPU usage
• I/O wait times
• Metadata processing workloads

Recent improvements are designed to make these operations less disruptive by reducing bottlenecks inside the filesystem's metadata management code.

For users running backup servers, NAS appliances, or snapshot-heavy desktop systems, these optimizations can improve overall responsiveness while cleanup tasks run in the background.

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Read more of this story at Slashdot.

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