"D. Hugh Redelmeier" <hugh@xxxxxxxxxx> writes: > I infer that Seagate generally doesn't disclose problems or even > fixes. You have to report a problem to support, and perhaps even ask > explicitly for a firmware update to be offered one. Thanks. I'll see if I can find a way to report this to seagate. They don't seem to make it very easy by not having a prominent support@ address that I can find documented anywhere. Their web page had some convoluted sign up to get a seagate approved identity. The sign up refused me enough times that I just figured it was broken. > If you can reliably reproduce this problem, that in itself is very > interesting. The reports on the Seagate forum have not been very > useful. Well, the test case that works for me is to copy a half dozen 1GB files from a sata dvd reader to the sata seagate disk. It might be very kernel dependent though. I hadn't seen the disk act up before a few weeks ago. It also takes hours for the system to wedge up solidly. This isn't going to be a fun bug for Seagate to find. > You didn't explain why you thought that the problem is related to NCQ. > Have you seen reports of NCQ problems? I don't know that it is NCQ related, only that other reports of similar lockups under streaming conditions claimed it was related to a known Seagate bug related to their NCQ implementation. I might be misremembering or misunderstanding though... > This FAQ claims to tell you how to turn off NCQ: > http://linux-ata.org/faq.html Thanks! Will try that and see if the problem goes away. > Do consider doing a S.M.A.R.T. scan of the drive. I've found that > bad blocks can do odd things to disk behaviour. I do a nightly long test. No grown errors and no pending errors. -wolfgang -- Wolfgang S. Rupprecht http://www.full-steam.org/ (ipv6-only) You may need to config 6to4 to see the above pages. -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines