Atomicity vs durability
Posted Mar 16, 2009 0:08 UTC (Mon) by man_ls
In reply to: Atomicity vs durability
Parent article: Ts'o: Delayed allocation and the zero-length file problem
Yes, isn't it silly to ask for the moon like this? Apart from the fact that ext3 does exactly what we are asking for; and XFS since 2007; and now ext4 with the new patches. Oh wait... maybe you really didn't understand what we were asking for.
Listen, the sky might fall on our heads tomorrow and eventually we are all to die, we understand that. But until then we really want our filesystems to do atomic renames in the face of a crash (i.e. what the rest of the world [except POSIX] understands as "atomic"). Not durable, not crash-proof, not magically indestructible -- just all-or-nothing. Atomic.
to post comments)