Date: Mon, 28 May 2007 18:40:29 GMT From: Michael<elshar@cheekan.org> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/113098: Cannot read from amrd while under heavy load Message-ID: <200705281840.l4SIeTV6052159@www.freebsd.org> Resent-Message-ID: <200705281850.l4SIo2bF029015@freefall.freebsd.org>
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>Number: 113098 >Category: kern >Synopsis: Cannot read from amrd while under heavy load >Confidential: no >Severity: serious >Priority: high >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon May 28 18:50:02 GMT 2007 >Closed-Date: >Last-Modified: >Originator: Michael >Release: 6.2-release >Organization: >Environment: FreeBSD jailserver 6.2-RELEASE-p5 FreeBSD 6.2-RELEASE-p5 #0: Sat May 26 06:19:58 PDT 2007 root@jailserver:/usr/obj/usr/src/sys/SMP amd64 >Description: When I put a heavy load on the array, I can't do any kind of reads from it until the process finishes. >How-To-Repeat: A small perl script I wrote to do it (my array is mounted on /mnt/test1): #!/usr/bin/perl my $i = 0; while ($i <= 100) { system("dd if=/dev/zero of=/mnt/test1/ddfile-" . $i . " bs=1m count=100 &\n"); $i++; } While this script is running, I can't do anything that reads the array. The only thing I can do is watch gstat and see that it's getting data written to it. >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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