From owner-freebsd-dtrace@freebsd.org Tue Sep 1 15:32:53 2015 Return-Path: Delivered-To: freebsd-dtrace@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 448789C7E36 for ; Tue, 1 Sep 2015 15:32:53 +0000 (UTC) (envelope-from woodsb02@gmail.com) Received: from mail-vk0-x230.google.com (mail-vk0-x230.google.com [IPv6:2607:f8b0:400c:c05::230]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 041DF8EA for ; Tue, 1 Sep 2015 15:32:53 +0000 (UTC) (envelope-from woodsb02@gmail.com) Received: by vkbc123 with SMTP id c123so58651612vkb.3 for ; Tue, 01 Sep 2015 08:32:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=W0MXbTZyy73D89t1ns2DqQz+0/+WgVmEUW7fN6ggbEo=; b=hFs8OmztoEtqNK3vQIGZ6q0gSEvOwPBXXekSRarjOOtPyf2g02ULXGDWkkWTuDyskC BsDHYaeNXkdIG/smGspiG0nh0Ysfb0wFeSbEFv29LwRev8QskmEzOftxtTOr7AKf+L7g 5LfbP5OU5CB9TtieFE+WUgLMGi5cfaiyLia4ughRZPryvZrsCf/99PbLkynjZYIQYN52 2/DDSbJxEVEVRovso3zq0qw4LDTOUknmKLZzd/bf46tdiCX3qkId8C3/OCm/wPAgAnZV g7XS7AbbEr8ns9Sbb8LVV4IWC3FdFpSRCknO2ja7v5MS5ViDySja18H9e0EoxM/r1S46 iYLg== MIME-Version: 1.0 X-Received: by 10.52.94.42 with SMTP id cz10mr30393796vdb.22.1441121571917; Tue, 01 Sep 2015 08:32:51 -0700 (PDT) Received: by 10.31.1.6 with HTTP; Tue, 1 Sep 2015 08:32:51 -0700 (PDT) Date: Tue, 1 Sep 2015 23:32:51 +0800 Message-ID: Subject: Dtrace in a jail From: Ben Woods To: freebsd-dtrace@freebsd.org Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-dtrace@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "A discussion list for developers working on DTrace in FreeBSD." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 01 Sep 2015 15:32:53 -0000 Hi everyone, I am just discovering dtrace, having heard about it a number of times but never investigated further. I like what I see so far! Is there a way to use Dtrace to debug programs being run in a jail? Attempting to run Dtrace from within the jail results in the following error: # dtrace -l dtrace: failed to initialize dtrace: DTrace device not available on system I want to debug a program I am running in a jail which is crashing a few seconds after being run. It doesn't crash in my FreeBSD 10.2 host, but does in the FreeBSD 9.3 jail. Since I want to run Dtrace on the pid provider on my program, I want my program to be executed by the Dtrace application. Something like: # dtrace -l -n 'pid$target::strcmp:entry{}' -c "./foo hello" But this results in the same error about Dtrace device not being available on the system (within the jail). If I instead run Dtrace and pass it the jexec command, I think it is tracing the jexec program, rather than my program that is then being executed within the jail. I.e. I don't think this works as expected: # dtrace -l -n 'pid$target::strcmp:entry{}' -c "jexec 1 foo hello" Any hints on how I can trace this program running in the jail? Thanks, Ben -- -- From: Benjamin Woods woodsb02@gmail.com From owner-freebsd-dtrace@freebsd.org Thu Sep 3 17:20:49 2015 Return-Path: Delivered-To: freebsd-dtrace@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 713869CAB64 for ; Thu, 3 Sep 2015 17:20:49 +0000 (UTC) (envelope-from alex.burlyga.ietf@gmail.com) Received: from mail-vk0-x236.google.com (mail-vk0-x236.google.com [IPv6:2607:f8b0:400c:c05::236]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 31BD6864 for ; Thu, 3 Sep 2015 17:20:49 +0000 (UTC) (envelope-from alex.burlyga.ietf@gmail.com) Received: by vkaw128 with SMTP id w128so28356170vka.2 for ; Thu, 03 Sep 2015 10:20:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=NVht3Ar4ZGc5k3We+BoxFDESiAN6vvhmWn7mV81tkVI=; b=wqP8eqt4XHx4VIzQvfeqAHO34zdBCEXmh6kz+MuAP/6+0qrTpXJqHEm3ChbN17mouB 1FXpedwzGF4nsrsGsyP5nGleO43tqmPLUi3ulSz3YNja62WA1ZP4FQpVNCuqAghr9Ri/ A2XtDZIyQjvJUcTz0+9/MD1923d8GHd1SMHakOANkGG1TR5NItwQ768tB6XiIm+66ixN klRsf3ETdBrnRcvrCwpcoEZaP7hb6DO7HGPcsJqAIZyqCPMpTx3JgBvvukdzyVTNNUM0 bY1XyQtkTX9rDkfW/QSmw7+AKFb21NPdj34OkLUcngDTkBN+mJi8vMS6U8cX82VfLy4J jdqA== MIME-Version: 1.0 X-Received: by 10.52.76.232 with SMTP id n8mr38174403vdw.20.1441300848207; Thu, 03 Sep 2015 10:20:48 -0700 (PDT) Received: by 10.103.5.193 with HTTP; Thu, 3 Sep 2015 10:20:48 -0700 (PDT) Date: Thu, 3 Sep 2015 10:20:48 -0700 Message-ID: Subject: Broken dtrace script in /usr/share/dtrace From: "alex.burlyga.ietf alex.burlyga.ietf" To: freebsd-dtrace@freebsd.org Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-dtrace@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "A discussion list for developers working on DTrace in FreeBSD." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 03 Sep 2015 17:20:49 -0000 Wanted to show off dtrace to co-workers of mine and tried running /usr/share/dtrace/nfsclienttime. I got an error and was not able to run it. Patch bellow that fixes the issue on FreeBSD 10. Alex diff --git a/share/dtrace/nfsclienttime b/share/dtrace/nfsclienttime index 335f067..e7764cf 100755 --- a/share/dtrace/nfsclienttime +++ b/share/dtrace/nfsclienttime @@ -54,13 +54,13 @@ syscall:::entry self->count = 0; } -nfsclient:nfs3::start +nfscl:nfs3::start { self->timestamp = timestamp; } -nfsclient:nfs3::done +nfscl:nfs3::done { self->count += (timestamp - self->timestamp); From owner-freebsd-dtrace@freebsd.org Fri Sep 4 14:37:26 2015 Return-Path: Delivered-To: freebsd-dtrace@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id F28169C9E0B for ; Fri, 4 Sep 2015 14:37:26 +0000 (UTC) (envelope-from s.tyshchenko@identika.pro) Received: from scale222.ru (scale222.ru [51.254.99.22]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id A368AA93 for ; Fri, 4 Sep 2015 14:37:26 +0000 (UTC) (envelope-from s.tyshchenko@identika.pro) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=scale222.ru; s=default; h=Content-Type:List-Unsubscribe:Message-ID:Sender:From:Date:MIME-Version:Subject:To; bh=5bMZ/KV7jJ9fXlBRon39LXl7a+Vo8PEZ0TF5Lcpuoq0=; b=LRvs/Y5U6k0IoCrv2QxIdkn0lKL1upxzT/R6Lv+seSRuOOVwVwHJxaZZhgZn8M5GgA6EFj8yWKEntro0pWT6m+HJgQoNykwgYPfykFFyN5cC8IwAW4OJBuiaa7Lu+eu7zkk79IAtSTEOQAIKaEaJAPkQLKRkCJfrGhYjEB9JlQY=; Received: from root by scale222.ru with local (Exim 4.80) (envelope-from ) id 1ZXs7J-0007WA-5c for freebsd-dtrace@freebsd.org; Fri, 04 Sep 2015 16:37:25 +0200 To: freebsd-dtrace@freebsd.org Subject: Plastic ProductS MIME-Version: 1.0 Date: Fri, 4 Sep 2015 16:37:25 +0200 From: Sergey Tyshchenko Sender: s.tyshchenko@identika.pro Message-ID: <243148522.27121@scale222.ru> X-Priority: 3 X-Mailer: scale222.ru mailer. Ver. 1.1. Precedence: bulk Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: base64 X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-dtrace@freebsd.org X-Mailman-Version: 2.1.20 List-Id: "A discussion list for developers working on DTrace in FreeBSD." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 04 Sep 2015 14:37:27 -0000 TWFudWZhY3R1cmUgb2YgwqBwcmludGVkIHByb2R1Y3RzIGZyb20gQUJTIHBsYXN0aWMsIGFjcnls aWMsIFBFVCBtZXRob2Qgb2YgdmFjdXVtIGZvcm1pbmcuIFNlcmllcyBwcm9kdWN0aW9uIG9mIExl dHRlcnMsIHNpZ25zLCBsaWdodCBib3hlcyAobGlnaHRib3gpLCBQT1MgbWF0ZXJpYWwgZm9yIHJl dGFpbCBjaGFpbnMuRXhhbXBsZXMgb2Ygb3VyIHdvcms6wqBodHRwOi8vaWRlbnRpa2EucHJvL2Nv dW50ZXJfbGluay9wcmVzZW50YXRpb25fZW4ucGRm4oCLDQoJCQkJCQkJCQkJCQkJCQkJCQkJDQoJ CQkJCQkJCQkJCQkJCQkJCQkJDQoJCQkJCQkJCQkJCQkJCQkJCQkJCQ0KCQkJCQkJCQkJCQkJCQkJ CQkJCQkNCgkJCQkJCQkJCQkJCQkJCQkJCQkJDQoJCQkJCQkJCQkJCQkJCQkJCQkJCQ0KCQkJCQkJ CQkJCQkJCQkJCQkJCQkNCgkJCQkJCQkJCQkJCQkJCQkNCgkJCQkJCQkJCQkJCQkJCQkNCgkJCQkJ CQkJCQkJCQkJCQkNCgkJCQkJCQkJCQkJCQkJCQkNCgkJCQkJCQkJCQkJCQkJCQkJDQoJCQkJCQkJ CQkJCQkJCQkJCQkNCgkJCQkJCQkJCQkJCQkJCQkJCQkNCgkJCQkJCQkJCQkJCQkJCQkJCQkJU2Vy Z2V5IFR5c2hjaGVua29DRU8gfMKgSURFTlRJS0EuUFJPVmliZXI6wqArMzgwNTA1NTY2OTY1wqB8 IFdoYXRzQXBwOsKgKzM4MDUwNTU2Njk2NVNreXBlOiB0LnNlcmdleS5tcy50eXNoY2hlbmtvQGlk ZW50aWthLnBybyB8wqBpZGVudGlrYS5wcm8wMzA0MCB8IEdvbG9zaWl2c2t5aSBBdmUuIDcwIHwg b2ZmaWNlIDUwMiB8IEtpZXbCoA==