From: Sape Mullender <sape@plan9.bell-labs.com>
To: 9fans@9fans.net
Subject: Re: [9fans] Bizarre freeze
Date: Tue, 5 Aug 2008 14:16:55 -0400 [thread overview]
Message-ID: <34025ae3bbbff821a5c287b6575f1866@plan9.bell-labs.com> (raw)
In-Reply-To: <140e7ec30808051101n5df6bcdbx4ab515e643f5d9f@mail.gmail.com>
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I wonder why there is a command to turn on DMA on disks. Could
it be that some disks don't work with DMA on?
Sape
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From: sqweek <sqweek@gmail.com>
To: "Fans of the OS Plan 9 from Bell Labs" <9fans@9fans.net>
Subject: [9fans] Bizarre freeze
Date: Wed, 6 Aug 2008 02:01:17 +0800
Message-ID: <140e7ec30808051101n5df6bcdbx4ab515e643f5d9f@mail.gmail.com>
Ran into an interesting one setting up my cpu server. The following
reliably freezes the box:
# echo dma on >/dev/sdC0/ctl
# 9fat:
Leaves the console totally unresponsive, no ^T^Tp, no ^P. rc -x on
9fat: gives "rfork e" as the final command.
sdC0 is a cdrom. I can turn dma on for my sata disks (sdE0/sdF0) no problem.
-sqweek
next prev parent reply other threads:[~2008-08-05 18:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-05 18:01 sqweek
2008-08-05 18:16 ` Sape Mullender [this message]
2008-08-05 18:26 ` ron minnich
2008-08-05 19:01 ` erik quanstrom
2008-08-07 10:17 ` matt
2008-08-05 19:49 erik quanstrom
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