On Wed, Jul 15, 2015 at 01:35:09PM -0400, Austin S Hemmelgarn wrote: > On 2015-07-15 12:58, Andrew Morton wrote: > > Also, what's the status of ext4's data=journal? It's the hardest ext3 > > mode for the rest of the kernel to support and I suspect hardly anyone > > uses it. > I use it, as do some other people I know, but only for stuff that pretty > much needs to be 100% guaranteed to be consistent after a power failure. > It is _very_ slow, but it does work correctly based on my recent > experience. It is also a benefit for workloads that are heavy on sync writes to (relatively) small files, such as mail servers. At least, it used to be considerably faster than data=ordered the last time I benchmarked it. -- Bruce Guenter <bruce@xxxxxxxxxxxxxx> http://untroubled.org/
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