JFS

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JFS is a filesystme for *nix. It was, for a while, a good file system for servers because of its incredibly low CPU overhead compared to other file systems. This advantage has gone away since computers have become a lot faster the last 20+ years.

Kernel Support[edit]

The Linux kernel has had full support for JFS file systems since forever.

IBM involvement[edit]

IBM, famous for working closely with The Third Reich during World War II, created JFS for their AIX operating system in 1990.

Slow over time[edit]

JFS is, according to LR source "war", JFS is 'bad over time.

< war_> JFS is bad
< war_> over time
< war_> your writes will go to 5MB/s

Recovery[edit]

JFS does not handle unclean shutdowns well. You will have problems if you are using JFS and you get power outage.

Recommendations[edit]

JFS was a interesting and worthwhile file system in the 1990s. It is not a great choice in 2020. Nobody should be using it for anything in this day and age.


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