From nobody Sat Aug 19 11:55:46 2023 X-Original-To: freebsd-current@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id 4RScdM3n2jz4qckd for ; Sat, 19 Aug 2023 11:55:51 +0000 (UTC) (envelope-from grahamperrin@gmail.com) Received: from mail-ej1-x62b.google.com (mail-ej1-x62b.google.com [IPv6:2a00:1450:4864:20::62b]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1D4" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4RScdM1c2kz3WVt; Sat, 19 Aug 2023 11:55:51 +0000 (UTC) (envelope-from grahamperrin@gmail.com) Authentication-Results: mx1.freebsd.org; none Received: by mail-ej1-x62b.google.com with SMTP id a640c23a62f3a-99c3d3c3db9so229358866b.3; Sat, 19 Aug 2023 04:55:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1692446149; x=1693050949; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=T909Rjn/BvSkuNKAX6Nx0/7hwIba6ebRx7EQkoG/H9Y=; b=cQ5D71Z5OpCrLhUa2GzJBjI/cUrcL0K61lG9fHbGqbUst/4RzsfTWxjmfYerLGyOsG 6fwO3vKBkE0sHDq51SFApq8qdWbIPJQs089rlVHiGF2FyOtvs09CAgj63rxmd3ROBoBg uaU8EtkJZ37jGFnxmgcwhNTDnLnO597E5gvIWy5Mn7EqP6JJaP1n2dqTzoQvlZwzSamN /EPYtkLJalcDtY55KupKbu260wQUe2kIi8xeAfoxKCTs2VH0F6yNouo/lTUAH2quMpFL 3YxPQ2+vazYYeC4YPA3DzCFQbSUxTl4eo+g49CZqVxlyQBYusUb5G5RSq2X04JtNBPG7 R0Ow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692446149; x=1693050949; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=T909Rjn/BvSkuNKAX6Nx0/7hwIba6ebRx7EQkoG/H9Y=; b=NQk/R/EgYTje/DbeLd+wQdrsjwGpSDj0n/+we/L03HCd5Elk26KEIrTjiCdprEXj0W iI/ic0O6JhhWwmKch4aceRludd7Mjj0Uv21ABIk0xWqVWBAz0gaRQ0nz6Z4ylwdvL5DU GsRz7t/eW5HjRw/uzdfVmTwiwqtYPCKpaJkav0a84nYFT6E73kWfCjfICgzM3v8j/870 T93Kmx44lgXPqWSMkvbjI7rLT+mpL47tMyWwzn+3YksgJKufZha6GJZERwz9oUJxIgjG yqOisU3RrvTz7ji5ZeaSVrhSou1bRqSDz7TGQb8DODeiU6kLlXYXbQYLZk7WY8Gyvjdo KOCg== X-Gm-Message-State: AOJu0YxkPQadNoPMHN1zKypaCJ+Vcm1QS7xKb/+WMtuM5fvS0nODzpLP qVuxJ+EZrLpITHPlcOEmZjnh6sPjy/k= X-Google-Smtp-Source: AGHT+IE/mFsSiiihYnJW+8L3WH0wh9NZwPbND0dfQNXIwIQwiA90aLkgmPMm7fw3sedOvXdzCO0QSg== X-Received: by 2002:a17:906:2099:b0:99b:64d0:f6c8 with SMTP id 25-20020a170906209900b0099b64d0f6c8mr1614043ejq.50.1692446148597; Sat, 19 Aug 2023 04:55:48 -0700 (PDT) Received: from [192.168.1.10] (80-42-66-93.dynamic.dsl.as9105.com. [80.42.66.93]) by smtp.gmail.com with ESMTPSA id i6-20020a170906264600b0099bd1ce18fesm2626389ejc.10.2023.08.19.04.55.47 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 19 Aug 2023 04:55:47 -0700 (PDT) Message-ID: <174925b2-e8ba-2da0-7dfd-d062e303c53a@gmail.com> Date: Sat, 19 Aug 2023 12:55:46 +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/5.0 (X11; FreeBSD amd64; rv:102.0) Gecko/20100101 Thunderbird/102.14.0 Subject: ZFS deadlock in 14: with ZIL :-) Content-Language: en-US To: Dimitry Andric Cc: freebsd-current@freebsd.org References: <59FCB309-4A55-4924-98C4-7ACCA70FD299.ref@yahoo.com> <59FCB309-4A55-4924-98C4-7ACCA70FD299@yahoo.com> <9ba2326b-d5de-5faa-edc8-b1cd7235a51c@gmail.com> <23BA44D4-8F35-4A0A-87A2-F765FE6D6865@FreeBSD.org> X-Priority: 5 (Lowest) From: Graham Perrin In-Reply-To: <23BA44D4-8F35-4A0A-87A2-F765FE6D6865@FreeBSD.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 4RScdM1c2kz3WVt X-Spamd-Bar: ---- X-Rspamd-Pre-Result: action=no action; module=replies; Message is reply to one we originated X-Spamd-Result: default: False [-4.00 / 15.00]; REPLY(-4.00)[]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US] On 19/08/2023 11:31, Dimitry Andric wrote: > On 19 Aug 2023, at 09:36, Graham Perrin wrote: >> … >> >> no ZIL; I never used the feature. > The ZIL always exists, but it can be stored on a separate device for > performance reasons. See zpoolconcepts(7), the Intent Log section: > > By default, the intent log is allocated from blocks within the main pool. > However, it might be possible to get better performance using separate > intent log devices such as NVRAM or a dedicated disk. For example: > # zpool create pool sda sdb log sdc > > -Dimitry Thanks! I looked at the page umpteen times, that part never sunk in. Now I know.