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[80.42.66.93]) by smtp.gmail.com with ESMTPSA id s12-20020a7bc38c000000b0040588d85b3asm7334253wmj.15.2023.10.02.07.18.26 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 02 Oct 2023 07:18:27 -0700 (PDT) Message-ID: <98646959-dd13-4a01-8a16-7b82d64c7ac3@gmail.com> Date: Mon, 2 Oct 2023 15:18:26 +0100 List-Id: Discussions about the use of FreeBSD-current List-Archive: https://lists.freebsd.org/archives/freebsd-current List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-current@freebsd.org MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Graham Perrin Subject: Occasional suspend/sleep failures: race? USB, HP dock, ZFS, three L2ARC devices. 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Spamd-Bar: --- X-Spamd-Result: default: False [-3.05 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20230601]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36:c]; MIME_GOOD(-0.10)[text/plain]; NEURAL_HAM_SHORT(-0.06)[-0.063]; XM_UA_NO_VERSION(0.01)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FREEFALL_USER(0.00)[grahamperrin]; FROM_HAS_DN(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com:dkim]; TO_MATCH_ENVRCPT_ALL(0.00)[]; ARC_NA(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[2a00:1450:4864:20::32b:from]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; MID_RHS_MATCH_FROM(0.00)[]; MLMMJ_DEST(0.00)[freebsd-fs@freebsd.org,freebsd-current@freebsd.org]; REDIRECTOR_URL(0.00)[goo.gl]; DKIM_TRACE(0.00)[gmail.com:+]; FREEMAIL_FROM(0.00)[gmail.com]; TO_DN_SOME(0.00)[]; SUBJECT_HAS_QUESTION(0.00)[]; RCPT_COUNT_TWO(0.00)[2]; RCVD_TLS_LAST(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; MIME_TRACE(0.00)[0:+]; RCVD_COUNT_TWO(0.00)[2] X-Rspamd-Queue-Id: 4Rzjjf0cBGz3blJ On 31/08/2023 19:42, Graham Perrin wrote (to freebsd-current alone, ): > I have a suspend.sh script that aims to take three cache devices > offline before sleep of the computer: > > % grep -v -e '# ' /etc/rc.suspend | uniq | grep -B 3 -A 2 suspend.sh > #!/bin/sh > # > > /usr/local/sbin/suspend.sh > >         echo "Usage: $0 [apm|acpi] [standby,suspend|1-4]" > % grep -v -e '# ' /usr/local/sbin/suspend.sh | uniq > #!/bin/sh > > while mount | grep Transcend 2>&1; do >    zpool export Transcend >    sleep 5 > done > > zpool offline august gpt/cache1-august > zpool offline august gpt/cache2-august > zpool offline august gpt/cache3-august > > sync > > killall pulseaudio > > while fstat | grep -e dsp -e mixer 2>&1; do >    fstat | grep -e dsp -e mixer | cut -w -f 3 | while read pid; >       do kill -15 "$pid" >    done > done > > sysctl hw.snd.default_unit=1 > > % > > > … On the morning of Tuesday 26th September, I predicted a failure (internal HDD ada1 was busy with a buildworld), so I took a screenshot before attempting to sleep the notebook (HP ZBook 17 G2). The album at begins with cropped and non-cropped versions of this shot (08:07:51). 08:10: the failure to suspend, photographed. L2ARC device gpt/cache1-august at the foot of the screen. 08:11: the HP dock. Two of four USB ports at the side occupied by flash drives, both Kingston DataTraveler 3.0. gpt/cache1-august above, gpt/cache2-august below. 08:12: the screen, after physically disconnecting various peripherals but not the dock. At the foot of the screen: a Kingston DataTraveler 2.0, which provides gpt/cache3-august. This drive was at the side of the notebook (was not docked). 08:13: the screen, after removing the HP ZBook from the HP dock. REMARKABLE: neither of the DataTraveler 3.0 devices (in the side of the dock) appears in any photograph. Is this a race condition? As if the OS, or ZFS, prematurely lost the ability to handle the docked storage devices on USB. Can I do anything to make the sleep-related script (above) stronger, to reduce the risk of failure? Might things be more reliable _without_ acpi_hp(4)? FreeBSD 15.0-CURRENT on the morning of 26th September would have been n265350-72d97e1dd9cc: % bectl list -c creation | tail -n 5 n265350-72d97e1dd9cc-c -      -          882M  2023-09-19 12:45 n265350-72d97e1dd9cc-d -      -          775M  2023-09-23 12:09 n265538-915af883221a-a -      -          256M  2023-09-26 16:30 n265538-915af883221a-b -      -          257M  2023-09-28 09:05 n265538-915af883221a-c NR     /          503G  2023-09-29 23:34 % % grep acpi_hp /boot/loader.conf acpi_hp_load="YES" # dev.acpi_hp.0.verbose=1 % man 4 acpi_hp % experimental, etc.