michael chang wrote:
Surely we don't want this. Look at the papers on Namesys's websites,
about the atomicaty and the banking example. But that's just my
personal opinion. Besides, I believe it's more likely that usually
the power gets lost than the SCSI or IDE cable gets disconnected,
AFAIK...
A write() syscall with the O_SYNC flag must ensure that not only
file data block
but also journal (meta-data update) are written to a disk when this
syscall end.
But, current implementation of Reiserfs does not do that. If a system
crashes,
a filesystem recovers from the journal transaction log. But, Reiserfs
may not
recover in some cases.
I checked other filesystems like ext3, jfs, xfs. Those filesystem
write transactions
to a disk everytime write() with the O_SYNC is performed. In those
filesystem,
I have no trouble mentioned above.
I should say, the Reiserfs would be "un"reliable filesystem..........
