Corruption when backing up to backblaze

[Gerard]

Been using a linux zfs based home server since 2012, since 2017 backing up daily to backblaze (first bitcasa, then cloudberry, now MSP360). Since late 2024 files are corrupted and cannot be restored from backblaze. I only found this out yesterday while remote.

No encryption is applied while backing up. The originals files seem ok and snapshots send to another zfs based server seem ok too.

It seems that a change at MSP360 underlies this (am checking if there is a client update on the server late 2024, early 2025).

Does anyone have an idea or experience that can shed some light on this?

Below a header of an xlsx file when opened as xls file (refuses to be opened as xlsx file with corruption warning). Files early 2024 and earlier open without issue…

"CloudBerryData  
ã?Ï?


$> )â†ó’›’›5›]’=?3’!€¥??¶d…ñ®_¥,â‚’äî¨á‘c…÷A?Ԍ>YîNüu:€ÙIî,e}Îà¨?̌›ô?Ãf£;´2#3222"üà?on¯›Ô?ÿÀO(}æT?F¯õKáÑ?¥ó¬?uG‚«x~È~M‡¬ü???ÄøøÄøøÑøøÇøøÜøøÅøK?'@?¯€a?¿?*¸Ìáø?w?÷‡Ô¸Üø#?w?ÆÖøK¸?+üCk–ëaˆ_?ƒØ¸?¬>·¿ö ¸¿èÆ?¸+øœS
íaN`a?çMr5>˜”:ÿ+Xᜨ¬eVàpópN8+ºV?S8#ú^#ºZ8%‹!‹.H¬µÇ,à¬a œ

¬Àh?o§??D??-ÂßÈøoÄ’ó?{È?œN_uß)Çî·%?‹K???Ô

OÎÛØ¿e??Ø.?m¬’ ?ÀR¸aVûÜ’C¡&£Á+?<…]~~ú÷Æ?Öõ?¯âÖo¸ ¬7>ø?ç[W?±??çÂ?ۖ¬7n^??䆶4oz„–Ç7ˆÅo«??c••¶7¥ñqveE0[α??

lÀ¢7VÖ£k?•©Æ.|„??Âû÷ökZ;âü€ikZ3‚paõT¿7ÆYXè}±Ï[àea-”ñ}K–?Z(?kä=?L脴ä??”

L»ñŸ?¯Í{¡"y?‚âc?ic—§Q?Âm¬O¢‡œÕŸTŃ?n·\S=?£lÿ?T[¬OҌ…Œe‰Ê?2s뺺E¯i‰Ë·ÃNº.?˜q?Ú?œ üx:ò;êÉáÏÒÃÅß7?+\Oü? 1?ß?áÙw

?$dêc‘?&S¶?%ãÚ<CÎ{R¯(°…Ï¡Áô?œê

ø(‹äH”͈íGï?·_

[Sergey]

[reply=“Gerard;d10156”] For a very long time now, if you use compression or encryption in the backup plan, there is a header added to the backed up data. This is intended and by design.
Please use a restore plan to get the data decompressed (seeing that you do not use the encryption), instead of just pulling the files directly from B2.

Let me know how that works for you!

[Gerard]

Hi, thanks for the quick response!

Actually this is what changed. As said early 2024 I could pull them directly from B2 no problem. But somewhere late 2024, or early 2025 this changed.

Will try upon my return, but am sure that I do not use encryption and fairly certain I do not use compression.

Will let you know.

[Gerard]

Returned home. Encryption off and compression on. Restore via MSP360 app works. However I am confused as files up to 2023 can be directly downloaded and opened correctly. Is the addition of the header added recently to MSP360?