From owner-freebsd-embedded@freebsd.org Fri Sep 27 15:36:06 2019 Return-Path: Delivered-To: freebsd-embedded@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id EF296125FE4 for ; Fri, 27 Sep 2019 15:36:06 +0000 (UTC) (envelope-from mike@sentex.net) Received: from pyroxene.sentex.ca (pyroxene.sentex.ca [IPv6:2607:f3e0:0:3::18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "pyroxene.sentex.ca", Issuer "Let's Encrypt Authority X3" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 46fwqn5v3Mz3xhp for ; Fri, 27 Sep 2019 15:36:05 +0000 (UTC) (envelope-from mike@sentex.net) Received: from [IPv6:2607:f3e0:0:4:297b:a41b:bb85:4128] ([IPv6:2607:f3e0:0:4:297b:a41b:bb85:4128]) by pyroxene.sentex.ca (8.15.2/8.15.2) with ESMTPS id x8RFa4x4055895 (version=TLSv1.2 cipher=AES128-SHA bits=128 verify=NO) for ; Fri, 27 Sep 2019 11:36:04 -0400 (EDT) (envelope-from mike@sentex.net) To: freebsd-embedded From: mike tancsa Subject: watchdogd stat location Openpgp: preference=signencrypt Autocrypt: addr=mike@sentex.net; keydata= mQENBFywzOMBCACoNFpwi5MeyEREiCeHtbm6pZJI/HnO+wXdCAWtZkS49weOoVyUj5BEXRZP xflV2ib2hflX4nXqhenaNiia4iaZ9ft3I1ebd7GEbGnsWCvAnob5MvDZyStDAuRxPJK1ya/s +6rOvr+eQiXYNVvfBhrCfrtR/esSkitBGxhUkBjOti8QwzD71JVF5YaOjBAs7jZUKyLGj0kW yDg4jUndudWU7G2yc9GwpHJ9aRSUN8e/mWdIogK0v+QBHfv/dsI6zVB7YuxCC9Fx8WPwfhDH VZC4kdYCQWKXrm7yb4TiVdBh5kgvlO9q3js1yYdfR1x8mjK2bH2RSv4bV3zkNmsDCIxjABEB AAG0HW1pa2UgdGFuY3NhIDxtaWtlQHNlbnRleC5uZXQ+iQFUBBMBCAA+FiEEmuvCXT0aY6hs 4SbWeVOEFl5WrMgFAlywzOYCGwMFCQHhM4AFCwkIBwIGFQoJCAsCBBYCAwECHgECF4AACgkQ eVOEFl5WrMhnPAf7Bf+ola0V9t4i8rwCMGvzkssGaxY/5zNSZO9BgSgfN0WzgmBEOy/3R4km Yn5KH94NltJYAAE5hqkFmAwK6psOqAR9cxHrRfU+gV2KO8pCDc6K/htkQcd/mclJYpCHp6Eq EVJOiAxcNaYuHZkeMdXDuvvI5Rk82VHk84BGgxIqIrhLlkguoPbXOOa+8c/Mpb1sRAGZEOuX EzKNC49+GS9gKW6ISbanyPsGEcFyP7GKMzcHBPf3cPrewZQZ6gBoNscasL6IJeAQDqzQAxbU GjO0qBSMRgnLXK7+DJlxrYdHGXqNbV6AYsmHJ6c2WWWiuRviFBqXinlgJ2FnYebZPAfWibkB DQRcsMzkAQgA1Dpo/xWS66MaOJLwA28sKNMwkEk1Yjs+okOXDOu1F+0qvgE8sVmrOOPvvWr4 axtKRSG1t2QUiZ/ZkW/x/+t0nrM39EANV1VncuQZ1ceIiwTJFqGZQ8kb0+BNkwuNVFHRgXm1 qzAJweEtRdsCMohB+H7BL5LGCVG5JaU0lqFU9pFP40HxEbyzxjsZgSE8LwkI6wcu0BLv6K6c Lm0EiHPOl5G8kgRi38PS7/6s3R8QDsEtbGsYy6O82k3zSLIjuDBwA9GRaeigGppTxzAHVjf5 o9KKu4O7gC2KKVHPegbXS+GK7DU0fjzX57H5bZ6komE5eY4p3oWT/CwVPSGfPs8jOwARAQAB iQE8BBgBCAAmFiEEmuvCXT0aY6hs4SbWeVOEFl5WrMgFAlywzOQCGwwFCQHhM4AACgkQeVOE Fl5WrMhmjQf/dBCjAVn1J0GzSsHiLvSAQz1cchbdy8LD0Tnpzjgp5KLU7sNojbI8vqt4yKAi cayI88j8+xxNXPMWM4pHELuUuVHS5XTpHa/wwulUtI5w/zyKlUDsIvqTPZLUEwH7DfNBueVM WyNaIjV2kxSmM8rNMC+RkgyfbjGLCkmWsMRVuLIUYpl5D9WHmenUbiErlKU2KvEEXEg/aLKq 3m/AdM9RAYsP9O4l+sAZEfyYoNJzDhTZMzn/9Q0uFPLK9smDQh4WBTFaApveVJPHRKmHPoNF Xxj+yScYdQ4SKH34WnhNSELvnZQ3ulH5tpASmm0w+GxfZqSc8+QCwoKtBRDUxoE56A== Message-ID: <5eba25eb-9ba4-0c93-27c8-e834491298ad@sentex.net> Date: Fri, 27 Sep 2019 11:36:05 -0400 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Content-Language: en-US X-Rspamd-Queue-Id: 46fwqn5v3Mz3xhp X-Spamd-Bar: ---- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of mike@sentex.net designates 2607:f3e0:0:3::18 as permitted sender) smtp.mailfrom=mike@sentex.net X-Spamd-Result: default: False [-4.20 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+ptr]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-embedded@freebsd.org]; DMARC_NA(0.00)[sentex.net]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; IP_SCORE(-1.90)[ip: (-0.90), ipnet: 2607:f3e0::/32(-4.94), asn: 11647(-3.56), country: CA(-0.09)]; TO_DN_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:11647, ipnet:2607:f3e0::/32, country:CA]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-embedded@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Dedicated and Embedded Systems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Sep 2019 15:36:07 -0000 We sometimes run into an issue where our embedded devices that boot off a read only SD card, hang with a controller error.  Its not clear if this is a BIOS/firmware/SDCard or driver bug issue. Its pretty infrequent, but annoying enough that I started to dig to see why the box is not rebooting via the hardware watchdog.   It seems to fail to reboot the box as the stat that it does on the filesystem is off the md backed /etc which is not impacted.  I know I could run an external program, but would it be safer to change the default directory where the stat is done to something that is generally not mounted via ramdisk ? eg.  diff -u watchdogd.c.orig watchdogd.c --- watchdogd.c.orig    2019-09-27 10:51:04.273113000 -0400 +++ watchdogd.c 2019-09-27 10:51:23.592200000 -0400 @@ -365,7 +365,7 @@                 if (test_cmd != NULL)                         failed = system(test_cmd);                 else -                       failed = stat("/etc", &sb); +                       failed = stat("/boot", &sb);                   error = watchdog_getuptime(&ts_end);                 if (error) {     ---Mike