Re: [CHECKER] Do ext2, jfs and reiserfs respect mount -o sync/dirsync option?

Jan Engelhardt
2005-03-04T07:34:28Z

>All warnings boil down to a single cause: when these file systems are
>mounted -o sync or dirsync, dirty blocks are still written out
>asynchronously. It appears to me that these mount options don't have any
>effect on these file systems. Is this the intended behavior?

At least my HDD LED flashes regularly when I add -o sync...
(Using `mount / -o remount,sync`)

It may happen that FISC reads the disk before the write command even finished.
With all the HD head movement optimization in the kernel (block layer,
boiling down to TCQ/NCQ), this sounds possible.

Jan Engelhardt
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