swap_pager
pobox at verysmall.org
pobox at verysmall.org
Wed Mar 1 01:09:56 PST 2006
Kris Kennaway wrote:
> On Tue, Feb 28, 2006 at 04:16:41PM +0100, pobox at 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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