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ecdye / zram-config

A complete zram-config utility for swap, directories, and logs to reduce SD, NAND and eMMC block wear.
MIT License
412 stars 53 forks source link

bad persistence on ZRAM #56

Closed mstormi closed 3 years ago

mstormi commented 3 years ago

just FYI, I ran into an extraordinarily mean error on my own production system that took me half a day to find out (with shutters all down and heating off ☹️ ):

Some .rrd file (rrd4j persistent storage) was broken and that made Java crash repeatedly. But deleting it didn't help. Persistence files are on ZRAM but seems when I deleted it ZRAM took the older version from the lowerFS and seems that was broken in the first place. Duh.

No, don't know yet what to make of that, just documenting for now.

Maybe one thing is we should extend the permissions_corrections() apply to /opt/zram/.bind/ too (the lowerFS copies of all the ZRAM'ed dirs).

ecdye commented 3 years ago

This may have been caused by the improper sync of zram that was happening on shutdown until Sunday. I don't think it is a major issue.

mstormi commented 3 years ago

until Sunday ? Are you aware that zram-config, unlike openhabian, does not get updated on every openhabian-config start ? There (still) multiple reports of reboot to take very long or "fail".

ecdye commented 3 years ago

Yes I am aware. They need to update. See my comment of the other thread.

mstormi commented 3 years ago

ok let's close it given we assume with your fix and my permissions PR there's nothing left to do. We can reopen if I'm wrong here.