Re:M1 Mac owners are experiencing high SSD writes over short...
by Filligree on Wednesday February 24, 2021 @12:06PM
(#26252393)
> And your workloads don't explicitly call fsync.
If you run ZFS, you can set sync=disabled for your filesystems. This will disable fsync.
Unlike most (all?) other filesystems, that's actually safe. ZFS doesn't reorder writes between transaction groups, so after a crash you'll get a consistent state from however many minutes ago.
(However, txgs have a time limit of 5 seconds by default. You also need to increase that.)
If you run ZFS, you can set sync=disabled for your filesystems. This will disable fsync.
Unlike most (all?) other filesystems, that's actually safe. ZFS doesn't reorder writes between transaction groups, so after a crash you'll get a consistent state from however many minutes ago.
(However, txgs have a time limit of 5 seconds by default. You also need to increase that.)