erdkes olvastam olyan erveket Ted Ts'o tol hogy mas filerendszerek is erintettek, mint pl btrfs, szerintem csak "magyarazom a bizonyitvanyom" volt...
btrfs faq:
"Does Btrfs have data=ordered mode like Ext3?
Yes. In v0.16, Btrfs waits until data extents are on disk before updating metadata. This ensures that stale data isn't exposed after a crash, and that file data is consistent with the checksums stored in the btree after a crash.
Btrfs does not force all dirty data to disk on every fsync or O_SYNC operation.
Can the data=ordered mode be turned off in Btrfs?
No, it is an important part of keeping data and checksums consistent. The Btrfs data=ordered mode is very fast and turning it off is not required for good performance."