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The 2.6.21 kernel is out
Linus has released the 2.6.21 kernel.
Significant changes in 2.6.21 include clockevents and the dynamic tick
patch, the VMI virtualization
interface, a number of KVM improvements, the ALSA system
on chip layer, and much more. See the KernelNewbies 2.6.21
summary for vast amounts of detail.
(On a sad note, Adrian Bunk has expressed
dissatisfaction with the regression count in 2.6.21 and has said he
will not bother tracking regressions in 2.6.22).
(Log in to post comments)
The 2.6.21 kernel is out Posted Apr 26, 2007 19:51 UTC (Thu) by h2 (guest, #27965) [Link] Full freeze on hot removal of esata/sata drive. This is with neo4 based motherboard. No issues in the past, all 2.6.20.x kernels work fine with esata hot removal (power off external drive, that is), as they should. Hopefully this issue will get resolved as soon as someone becomes aware of it, I guess it may be time for my first kernel bug report since this one makes esata unuseable.
The 2.6.21 kernel is out Posted Apr 26, 2007 19:56 UTC (Thu) by h2 (guest, #27965) [Link] Sorry, that's nforce4 based mobo, msi in this case.
The 2.6.21 kernel is out Posted Apr 27, 2007 0:24 UTC (Fri) by gregkh (subscriber, #8) [Link] Have you let the kernel developers know about this bug? Posting on random message boards isn't the best way to get kernel bugs fixed.
The 2.6.21 kernel is out Posted Apr 27, 2007 4:40 UTC (Fri) by h2 (guest, #27965) [Link] I wouldn't call lwn.net a random message board. But I'll be posting this one to bugzilla as soon as I get around to it. I was actually amazed to see this one slip through, this isn't obscure stuff here, and it's not subtle, has been present in all versions I've tested of 2.6.21, so obvious that I was sure that it would have gotten handled.
The 2.6.21 kernel is out Posted Apr 27, 2007 9:06 UTC (Fri) by niner (subscriber, #26151) [Link] If everyone that noticed this bug thought the same way, you know why the bug isn't fixed yet ;)
Even obvious stuff has to be reported by someone.
The 2.6.21 kernel is out Posted Apr 27, 2007 19:46 UTC (Fri) by h2 (guest, #27965) [Link] Niner, yes, that's what I realized too.
Re esata not being obvious, I don't know about that, but I guess that kernel devs and testers aren't using it yet. I definitely wish I'd filed a bug report 3 weeks ago, since this was there then too, the actual reason I didn't was that the kernel freeze was so instant that I couldn't get any meaningful logs at all post freeze, which I assumed the kernel guys would need to see.
Esata + usb drives will replace usb standard once people start to realize how absurdly fast they are, once you run this stuff you'll never use usb again if you can help it. It's amazing to see what market inertia looks like though.
And esata is getting more and more commong to run external commercial level drive enclosures too, think for example 3ware.
The 2.6.21 kernel is out Posted Apr 27, 2007 22:30 UTC (Fri) by hawk (subscriber, #3195) [Link] Yes, combined eSATA + USB2.0 external drives are becoming somewhat common and the eSATA interface is, as you said, just so much faster than USB2.0 that once it really catches on, USB2.0 will probably be more or less obliterated when it comes to external storage.
About 25 MB/s for sequential reads vs the full speed of the actual drive (something like a 60 MB/s avg. for sequential reads on a typical disk), the choice should be pretty simple.
That combined with eSATA equipped motherboards being rather common now and one would think that things should start to happen pretty soon.
The 2.6.21 kernel is out Posted Apr 27, 2007 17:31 UTC (Fri) by iabervon (subscriber, #722) [Link] I think esata is more obscure than you think. All the external removable drives I've seen lately have been USB 2.0. Wouldn't be surprised if there were nobody other than you testing -rc kernels with esata at all, since "hardware support for replacing drives" and "it's okay if the computer crashes some" isn't a common combination.
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