Date: Sun, 01 Nov 2020 14:54:45 +0000 From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 250770] AWS EC2 system freezes up possibly associated with NFS (EFS) Message-ID: <bug-250770-27103-QETgH9xX7G@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-250770-27103@https.bugs.freebsd.org/bugzilla/> References: <bug-250770-27103@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250770 --- Comment #2 from Gunther Schadow <raj@gusw.net> --- Before anyone spends time on this, I am still trying some options. For now I have made 3 modification in my NFS mount options: 1. timeo=150 down from 600 - that alone didn't help 2. oneopenown - that alone didn't help 3. minorversion=1 added, the manual isn't clear if it is a requirement for oneopenown or if it implicitly sets minorversion=1, but since I added that, I have not frozen up for almost 6 hours. That's new. I also enabled crude NFS logging with sysctl vfs.nfs.debuglevel=4 And this is what I see in the /var/log/messages: Nov 1 08:59:23 freebsd su[926]: ec2-user to root on /dev/pts/1 Nov 1 10:28:20 freebsd su[1271]: ec2-user to root on /dev/pts/2 Nov 1 10:28:38 freebsd kernel: clnt call=0 Nov 1 10:28:43 freebsd syslogd: last message repeated 8 times Nov 1 10:28:43 freebsd kernel: readrpc: aft doiods=5 Nov 1 10:28:43 freebsd kernel: clnt call=0 Nov 1 10:29:14 freebsd syslogd: last message repeated 1125 times Nov 1 10:31:20 freebsd syslogd: last message repeated 63 times Nov 1 10:36:05 freebsd syslogd: last message repeated 368 times Nov 1 10:36:05 freebsd kernel: readrpc: aft doiods=5 Nov 1 10:36:05 freebsd kernel: clnt call=0 ... Nov 1 13:25:37 freebsd kernel: clnt call=0 Nov 1 13:25:37 freebsd kernel: readrpc: aft doiods=5 Nov 1 13:25:37 freebsd kernel: clnt call=0 Nov 1 13:25:37 freebsd syslogd: last message repeated 6 times Nov 1 13:25:37 freebsd kernel: readrpc: aft doiods=5 Nov 1 13:25:37 freebsd kernel: clnt call=0 Nov 1 13:25:37 freebsd kernel: readrpc: aft doiods=5 Nov 1 13:25:37 freebsd kernel: clnt call=0 Nov 1 13:25:37 freebsd kernel: readrpc: aft doiods=5 Nov 1 13:25:37 freebsd kernel: clnt call=0 Nov 1 13:25:37 freebsd syslogd: last message repeated 6 times Nov 1 13:25:37 freebsd kernel: readrpc: aft doiods=5 Nov 1 13:25:37 freebsd kernel: clnt call=0 Nov 1 13:25:37 freebsd syslogd: last message repeated 6 times Nov 1 13:25:37 freebsd kernel: readrpc: aft doiods=5 Nov 1 13:25:37 freebsd kernel: clnt call=0 Nov 1 13:25:37 freebsd kernel: readrpc: aft doiods=5 Nov 1 13:25:37 freebsd kernel: clnt call=0 Nov 1 13:25:56 freebsd syslogd: last message repeated 53 times Nov 1 13:25:56 freebsd kernel: readrpc: aft doiods=5 Nov 1 13:25:56 freebsd kernel: clnt call=0 Nov 1 13:26:27 freebsd syslogd: last message repeated 80 times Nov 1 13:26:55 freebsd syslogd: last message repeated 204 times Nov 1 13:26:55 freebsd kernel: readrpc: aft doiods=5 Nov 1 13:26:55 freebsd kernel: clnt call=0 Nov 1 13:27:36 freebsd syslogd: last message repeated 58 times Nov 1 13:29:26 freebsd syslogd: last message repeated 87 times Nov 1 13:30:47 freebsd syslogd: last message repeated 78 times Nov 1 13:30:47 freebsd kernel: readrpc: aft doiods=5 Nov 1 13:30:47 freebsd kernel: clnt call=0 Nov 1 13:31:21 freebsd syslogd: last message repeated 26 times Nov 1 13:33:00 freebsd syslogd: last message repeated 58 times Nov 1 13:43:21 freebsd syslogd: last message repeated 119 times Nov 1 13:53:06 freebsd syslogd: last message repeated 277 times Nov 1 14:03:00 freebsd syslogd: last message repeated 263 times Nov 1 14:13:22 freebsd syslogd: last message repeated 216 times Nov 1 14:23:06 freebsd syslogd: last message repeated 5110 times Nov 1 14:33:00 freebsd syslogd: last message repeated 491 times Nov 1 14:43:22 freebsd syslogd: last message repeated 120 times nothing really meaningful to me. But I hope that if it does lock up, I will see something peculiar. On the other hand, now on c5.large with: 1. minorversion=1 2. sysctl vfs.nfs.debuglevel=4 I have not locked up again. If I can make it a full day, I will take back these 3 changes one by one, first the debug logging, then the minorversion=1, to see when the problem recurs. -- You are receiving this mail because: You are the assignee for the bug.
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