LSFMM: A storage technology update

Posted Apr 23, 2013 22:49 UTC (Tue) by bjencks (subscriber, #80303)
Parent article: LSFMM: A storage technology update

What companies are planning to use these new features? Presumably the "storage industry" isn't going to develop these features without some software that can use them on day one. I thought Linux was the primary target for non-consumer storage these days, but it sounds like the "storage industry" is pretty much throwing this stuff over the wall. Are VMware or Microsoft working more closely with the vendors?

Also, how many of these features are expected to be in disks, vs. those that are only exposed in SANs? Are some of the features targeted at disks that will be in SANs, but not expected to be used by general purpose OSes?

LSFMM: A storage technology update

Posted Apr 26, 2013 19:09 UTC (Fri) by RobertCElliott (guest, #90524) [Link]

Fusion-io has contributed MySQL InnoDB patches that use atomic writes with vectored I/O (using their own vendor-specific SDK, not standard SCSI commands). These patches eliminate the need for the doublewrite buffer to survive disruptions during writes.

Atomic writes are a natural fit for SSDs (which never write in place), plausible for RAID controllers with non-volatile caches (with SSDs or HDDs on the back-end), but unlikely for HDDs themselves.