Date: Wed, 01 Mar 2006 10:09:45 +0100 From: "pobox@verysmall.org" <pobox@verysmall.org> To: Kris Kennaway <kris@obsecurity.org> Cc: freebsd-questions@freebsd.org Subject: Re: swap_pager Message-ID: <440564D9.7030207@verysmall.org> In-Reply-To: <20060228194032.GA85006@xor.obsecurity.org> References: <44046959.4080901@verysmall.org> <20060228194032.GA85006@xor.obsecurity.org>
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Kris Kennaway wrote: > On Tue, Feb 28, 2006 at 04:16:41PM +0100, pobox@verysmall.org wrote: >> I am running FreeBSD 5.4 in VMware using USB 1.1 external HDD as a disk, >> which means quite slow I/O. It works fine for my needs, I only get >> >> swap_pager: indefinite wait buffer: device: da0s1f, blkno: xxx, size: xxx >> >> when performing heavy operations, such as rsync of a 1 GB database dump >> file. >> >> All references to the problem I found point out hardware failure. Could, >> however, the problem be simply that the I/O does not manage to let the >> request go through within the 20 seconds wait time and that the hardware >> is OK (apart from the fact that I/O is slow? And - is this message just >> a notice, or does it mean that I get data corruption? > > Yes, it just means "operation did not complete within the arbitrarily > chosen time period", and by itself it doesn't mean there exists any > further problem. If the operation didn't complete because the drive > threw it away, has bad blocks, etc, that would be a problem. In your > case it's likely to just be the slow disk. > > Kris Kris, thanks for the clarification! Best, Iv
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