Return-Path: Delivered-To: apmail-hadoop-core-user-archive@www.apache.org Received: (qmail 53379 invoked from network); 3 Feb 2009 17:53:47 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.2) by minotaur.apache.org with SMTP; 3 Feb 2009 17:53:47 -0000 Received: (qmail 59321 invoked by uid 500); 3 Feb 2009 17:53:41 -0000 Delivered-To: apmail-hadoop-core-user-archive@hadoop.apache.org Received: (qmail 59273 invoked by uid 500); 3 Feb 2009 17:53:41 -0000 Mailing-List: contact core-user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: core-user@hadoop.apache.org Delivered-To: mailing list core-user@hadoop.apache.org Received: (qmail 59257 invoked by uid 99); 3 Feb 2009 17:53:41 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 03 Feb 2009 09:53:41 -0800 X-ASF-Spam-Status: No, hits=-1.8 required=10.0 tests=HTML_MESSAGE,RCVD_IN_DNSWL_MED,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: local policy) Received: from [171.67.219.85] (HELO smtp5.stanford.edu) (171.67.219.85) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 03 Feb 2009 17:53:33 +0000 Received: from smtp5.stanford.edu (localhost.localdomain [127.0.0.1]) by localhost (Postfix) with SMTP id E7E933B6B46 for ; Tue, 3 Feb 2009 09:53:12 -0800 (PST) Received: from tablet (dinozavra.Stanford.EDU [128.12.174.91]) by smtp5.stanford.edu (Postfix) with ESMTP id 4B8143B6AD8 for ; Tue, 3 Feb 2009 09:53:11 -0800 (PST) From: "Dmitry Pushkarev" To: Subject: HDD benchmark/checking tool Date: Tue, 3 Feb 2009 09:53:04 -0800 Message-ID: <003401c98628$43ca8750$cb5f95f0$@edu> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0035_01C985E5.35A74750" X-Mailer: Microsoft Office Outlook 12.0 Content-Language: en-us Thread-Index: AcmGKENTiyzyx/A4RummOu8yRyBZpw== X-Virus-Checked: Checked by ClamAV on apache.org ------=_NextPart_000_0035_01C985E5.35A74750 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Dear hadoop users, Recently I have had a number of drive failures that slowed down processes a lot until they were discovered. It is there any easy way or tool, to check HDD performance and see if there any IO errors? Currently I wrote a simple script that looks at /var/log/messages and greps everything abnormal for /dev/sdaX. But if you have better solution I'd appreciate if you share it. --- Dmitry Pushkarev +1-650-644-8988 ------=_NextPart_000_0035_01C985E5.35A74750--