On 12/30/2009 2:40 PM, Richard Elling wrote:
There are a few minor bumps in the road. The ATA PASSTHROUGH
command, which allows TRIM to pass through the SATA drivers, was
just integrated into b130. This will be more important to small servers
than SANs, but the point is that all parts of the software stack need to
support the effort. As such, it is not clear to me who, if anyone, inside
Sun is champion for the effort -- it crosses multiple organizational
boundaries.
I'd think it more important for devices where this is an issue, namely
SSDs, then it is spinning rust though use of the TRIM command, or
something like it, would fix a lot of the issues I've seen with thin
provisioning over the last six years or so. However, I'm not sure it's
going to be much of an impact until you can get the entire stack -
application to device - rewired to work with the concept behind it. One
of the biggest issues I've seen with thin provisioning is how the
applications work and you can't fix that in the file system code.
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
