From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sender11-op-o11.zoho.eu (sender11-op-o11.zoho.eu [31.186.226.225]) by sourceware.org (Postfix) with ESMTPS id C684A3858CDA for ; Mon, 26 Sep 2022 14:26:42 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org C684A3858CDA Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=hamishmb.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=hamishmb.com ARC-Seal: i=1; a=rsa-sha256; t=1664202399; cv=none; d=zohomail.eu; s=zohoarc; b=IcMUaqpTxGWQO3RqtqlJbFs70eHxzyM5ha52MIFXkN224vMpQDbMGhhzL8OBNiIuTc5i4HdtTfIVE3toTBXbZK+JItKgwkxM8xJKbj3/ysB/wZh4lfdSMtXvnUnXlaBbpvYQraEJ0sO5wNALUDfC0xwrSzIf21QoNmZDRnnwN88= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.eu; s=zohoarc; t=1664202399; h=Content-Type:Content-Transfer-Encoding:Date:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:To; bh=hC2osdKNmP76qpfoD7zc26EaFl/RPSwHDsGS+HDAx8k=; b=K/2dVwAlTAxOgs+qwB2HUWy9WHtV7d1duEfMbVmNq1VHHHzU2H8Ht+WsKuPAhI3t7JuFQfLVPljrUu2BR8AAg9ok5eMOsnDCewJL6iyn2kn4E0hjcgP5v+XGrqFUoHP1F5gI9BioMWJTM2QaW8UhqCAMfK/xF04aCSFbi0VFwww= ARC-Authentication-Results: i=1; mx.zohomail.eu; dkim=pass header.i=hamishmb.com; spf=pass smtp.mailfrom=cygwin@hamishmb.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1664202399; s=zmail; d=hamishmb.com; i=cygwin@hamishmb.com; h=Message-ID:Date:Date:MIME-Version:Subject:Subject:To:To:References:From:From:In-Reply-To:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To:Cc; bh=hC2osdKNmP76qpfoD7zc26EaFl/RPSwHDsGS+HDAx8k=; b=aj1eF1fPXy2Km1vwm0fWxvcxImQqQ3Yaq+dCmLt2fM9DQivww/nM2T3qTScF2DQD /RgdE0SbeqtYFY95E77KdWgiX64gGiPYxT834XSbwhSPH6Klk+sxu0xvs4rV/Z9/E1w gjucK5DELc5NS7ArOWVRxyokgXaDImRxtZZswes0= Received: from [192.168.10.213] (host86-149-41-78.range86-149.btcentralplus.com [86.149.41.78]) by mx.zoho.eu with SMTPS id 1664202398630630.6516886561373; Mon, 26 Sep 2022 16:26:38 +0200 (CEST) Message-ID: Date: Mon, 26 Sep 2022 15:26:36 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: Smartctl issues in Cygwin with elevated terminal Content-Language: en-US To: cygwin@cygwin.com References: <228fb395-f742-5d99-d108-f3394129d97e@hamishmb.com> From: Hamish McIntyre-Bhatty In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ZohoMailClient: External X-Spam-Status: No, score=-1.6 required=5.0 tests=BAYES_00,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A,RCVD_IN_BARRACUDACENTRAL,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS,TXREP autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on server2.sourceware.org List-Id: On 13/09/2022 18:23, Christian Franke wrote: > Hamish McIntyre-Bhatty wrote: >> I recently noticed that smartctl only works when the Cygwin Terminal >> isn't run as administrator - the opposite way round to Linux where you >> need superuser privileges to access the disk. >> >> With Administrator privileges on Windows 11, I get: >> >> "Read Device Identity Failure Input/Output error" > > This likely happens because one of the tried pass-through I/O-controls > returns an error code which does not mean "not implemented". This is a > limitation or bug in the driver of the disk controller. > > For further diagnostics, try for example. 'smartctl -r ioctl,2 -i /dev/sda' > > >> >> But it continues to work fine as a normal user. > > When run without admin rights for a SATA device, smarctl may print: > "Warning: Limited functionality due to missing admin rights" > and then prints only limited device identify and SMART DATA information > returned by IOCTL_STORAGE_QUERY_PROPERTY and IOCTL_STORAGE_PREDICT_FAILURE. > > Other functionality requires admin rights and a working pass-through > I/O-control - try 'smartctl -x /dev/sda'. > > > Please note that the above is not Cygwin specific as it applies to both > (Cygwin and Mingw-w64) Windows builds of smartctl. Use this ML for > related support requests: > https://listi.jpberlin.de/mailman/listinfo/smartmontools-support > > >> >> Does anyone know why? In my case, this actually matters because I'm >> not sure how to elevate and/or drop privileges in Cygwin, as sudo >> doesn't work due to it not being Unixy underneath. > > To drop privileges, try 'cygdrop' tool from 'cygutils-extra' package. > > Thanks. I can confirm that this only seems to be an issue in QEMU - it's a disk controller and/or driver issue as you suggested it might be. cygdrop will hopefully resolve my issue. Hamish