On 11/18/2011 11:38 PM, Trond Myklebust wrote:
The fact of the matter is that most application writers remain blithely
oblivious of the need to fsync() as the ext4 people know all to well:
see the attempts to impose the fully posix-compatible 'data=writeback'
mode as the default and the catastrophe that occurred when
'data=ordered' semantics changed for the rename() syscall. Adding new
failure modes needs to be done with care, or GNOME will crash and/or
your word processor _will_ lose your last hour or so of work.
1. It's not a new failure mode. it's how things worked before 2.6.34
2. My ticket usualy expires in the middle of the night. I get back in
the morning and have to reboot the workstation because it's hung.
Anything left in the wordprocessor is lost.
Before this change I got back in the morning, the unlock screen popped
up, I entered my password and got a new ticket, everyone was happy.
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