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>By contrast, ZFS has "slop space" to avoid this very problem As does ext4 (although they call the space "reserved blocks"). 'man tune2fs' for details. As we
by nobody9999 3y ago
>By contrast, ZFS has "slop space" to avoid this very problem
As does ext4 (although they call the space "reserved blocks"). 'man tune2fs' for details. As well as most other modern (and not so modern[0]) filesystems.
[0] As I recall, the same was true for SunOS'[1] UFS back in the 1980s.
[1] https://en.wikipedia.org/wiki/SunOS https://en.wikipedia.org/wiki/SunOS
- _flux 3y agoIn ext[234]fs the reserved blocks is something else though: they are reserved to a specific user, by default root. So if normal users fill out the filesystem, the root user still has some space to write. Sort of a simple quota system. I believe this problem in is only relevant to CoW filesystems. With ext[234]fs you can set the reserved blocks to 0, fill the fs, and always remove files to fix the situation.