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Feature #73
closedkernel: implement 'flush disk cache' ioctl
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Description
Currently the osd journal on a raw block device requires that you disable the disk write cache via hdparm. That's annoying, and often overkill when, for example, the journal is just one partition on a disk that also hosts a real fs that goes faster with the cache on.
Linux doesn't have a proper ioctl to do this currently. See
http://www.mail-archive.com/linux-kernel@vger.kernel.org/msg111906.html
Updated by Sage Weil over 13 years ago
- Status changed from New to Rejected
Not a problem on recent kernels.
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