Bcache, cachefs and cachefilesd are three different caching solutions that can improve the performance of disk access. Bcache is a block-level cache that uses an SSD as a cache for another block device, such as a hard disk. Cachefs is a file-level cache that uses a directory on a local disk as a cache for network filesystems, such as AFS or NFS3. Cachefilesd is a daemon that manages the cachefs data store and communicates with the kernel module cachefiles. Some of the benefits of using bcache are:

It can speed up random read and write operations on slow disks by using fast SSDs as cache.
It can handle files that are larger than the cache size by caching partial extents.
It can protect data integrity by reliably handling unclean shutdowns and IO errors.
It can bypass the cache for sequential IO and large file copies to avoid cache pollution.
Some of the benefits of using cachefs and cachefilesd are:

They can reduce network traffic and latency by caching data locally on disk.
They can automatically adjust the cache size according to the available disk space and culling limits.
They can work with any network filesystem that supports FS-Cache, such as AFS or NFS.
They can hide IO errors that occur in the cache from the client filesystem driver.



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#linux #storage #yashar_esmaildokht #cachefs #zfs #bcache #kernel #cache

Bcache, cachefs and cachefilesd are three different caching solutions that can improve the performance of disk access. Bcache is a block-level cache that uses an SSD as a cache for another block device, such as a hard disk. Cachefs is a file-level cache that uses a directory on a local disk as a cache for network filesystems, such as AFS or NFS3. Cachefilesd is a daemon that manages the cachefs data store and communicates with the kernel module cachefiles. Some of the benefits of using bcache are:

It can speed up random read and write operations on slow disks by using fast SSDs as cache.
It can handle files that are larger than the cache size by caching partial extents.
It can protect data integrity by reliably handling unclean shutdowns and IO errors.
It can bypass the cache for sequential IO and large file copies to avoid cache pollution.
Some of the benefits of using cachefs and cachefilesd are:

They can reduce network traffic and latency by caching data locally on disk.
They can automatically adjust the cache size according to the available disk space and culling limits.
They can work with any network filesystem that supports FS-Cache, such as AFS or NFS.
They can hide IO errors that occur in the cache from the client filesystem driver.



https://lnkd.in/gneuxUSe


#linux #storage #yashar_esmaildokht #cachefs #zfs #bcache #kernel #cache