Re: [PATCH] enable core.fsyncObjectFiles by default

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On Wed, Jan 17, 2018 at 11:37:31AM -0800, Matthew Wilcox wrote:
> How about this instead?
> 
> This option is enabled by default and ensures data integrity by calling
> fsync after writing object files.  It is not necessary on filesystems
> which journal data writes, but is still necessary on filesystems which
> do not use journalling (ext2), or that only journal metadata writes
> (OS X's HFS+, or Linux's ext4 with "data=writeback").  Turning this
> option off will increase performance at the possible risk of data loss.

I think this goes entirely into the wrong direction.  The point is
fsync is always the right thing to do.  But on ext3 (and ext3 only)
the right thing is way too painful, and conveniently ext3 happens
to be almost ok without it.  So if anything should get a special
mention it is ext3.



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