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I don’t have a lot of SRE/sysadmin/etc. experience, so this is probably just ignorance on my part, but I find it hard to imagine a scenario where the filesystem

I don’t have a lot of SRE/sysadmin/etc. experience, so this is probably just ignorance on my part, but I find it hard to imagine a scenario where the filesystem on my servers matters at all (as long as we’re not talking about something super ancient like FAT). What are some workflows that ZFS enables for you on servers that you couldn’t do with ext4 or stock FreeBSD FFS ?

CoolCold 4y ago
Pretty much * data compression - say midsized 1.6TB mysql db compressed into 400Gb => allows to run replica servers on cheaper hardware (smaller drives) * hot data set caching - depending on case can be 5-100 times better performance * single pool but different settings per FS - say block sizes 16k for DB and 256kb for file storage * snapshots. Instant snapshots * coming back to db replication case, this helps to test db scheme migration on close to production env and prepare better planning/downtime window. Once tests done - rollback snapshot and enable replica back without full reclone. And so on