Date: Sat, 17 Dec 2005 07:54:46 +1100 From: Peter Jeremy <PeterJeremy@optushome.com.au> To: delphij@delphij.net Cc: freebsd-stable <freebsd-stable@freebsd.org> Subject: Re: indefinite wait buffer: Does this indicate hardware issue? Message-ID: <20051216205446.GS77268@cirb503493.alcatel.com.au> In-Reply-To: <a78074950512161206l370bdd7fg8b1e8fd1f6ab0a43@mail.gmail.com> References: <a78074950512160849w70335610xd2cb0c3b61ed92a2@mail.gmail.com> <20051216193942.GA92029@xor.obsecurity.org> <a78074950512161206l370bdd7fg8b1e8fd1f6ab0a43@mail.gmail.com>
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On Sat, 2005-Dec-17 04:06:36 +0800, Xin LI wrote: >No, it's sometimes other, and is quite infrequent. On the other hand, >neither SMART nor error has reported some incident, so I was stuck >when looking on hardware issues, as the message does not indicate >which disk(s) may have problem... A hardware error should have been reported as such. But if you suspect a disk problem, try dd'ing the swap partition (or the whole disk) to /dev/null. If you can read the whole partition, you can probably write to it. (Or you could dd /dev/zero to the partitions whilst swap is not attached - eg in single user after boot). If you suspect retries are a problem, monitor the I/O rate with iostat or systat and see if it suddenly drops. -- Peter Jeremy
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