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thank you for the info.

today I download the steem_witness-20210806.tar.lz4 but when decompressing I got this error three times.

Decompressed : 162900 MB  Error 66 : Decompression error : ERROR_decompressionFailed
tar: Unexpected EOF in archive
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now

I checked the downloaded file is complete. Does the file have errors?

Here is the related post.
https://steemit.com/hive-192037/@etainclub/steem-on-rpi-downloading-block-files

If you are using the pipe way to download and decompress the file, I guess the stability of nework may affect this process.

I could decompress the steem_witness.
but when executing, run.sh start I had an error which failed to open database.

I posted here about that.
Could you guide me?
https://steemit.com/hive-192037/@etainclub/steem-on-rpi-sync-failed