Hi!
Currently, I'm working on a script using %SYS.Journal API.
My journal files are compressed, following the documentation the compression is zstd.
I tried to unzip a file with zstd tool, ex:
apt-get update
apt-get install zstd
zstd -d 20230806.001z -o 20230806.001
20230806.001z : 92.03% (909312 => 836859 bytes, 20230806.001)
Unfortunately, the unzipped file is invalid:
Write ##class(%SYS.Journal.File).IsValidJournal("/usr/irissys/mgr/journal/20230806.001")