From nobody Thu Aug 10 10:27:33 2023 X-Original-To: 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 4RM35k3h0rz4TxTg for ; Thu, 10 Aug 2023 10:27:38 +0000 (UTC) (envelope-from pi@freebsd.org) Received: from home.opsec.eu (home.opsec.eu [IPv6:2001:14f8:200::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 4RM35j4fQ1z4kl8; Thu, 10 Aug 2023 10:27:37 +0000 (UTC) (envelope-from pi@freebsd.org) Authentication-Results: mx1.freebsd.org; dkim=none; spf=softfail (mx1.freebsd.org: 2001:14f8:200::1 is neither permitted nor denied by domain of pi@freebsd.org) smtp.mailfrom=pi@freebsd.org; dmarc=none Received: from pi by home.opsec.eu with local (Exim 4.95 (FreeBSD)) (envelope-from ) id 1qU2tB-0007Yw-3o; Thu, 10 Aug 2023 12:27:33 +0200 Date: Thu, 10 Aug 2023 12:27:33 +0200 From: Kurt Jaeger To: Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?= Cc: current@freebsd.org Subject: Re: ZFS deadlock in 14 Message-ID: <20230810102733.GB11506@home.opsec.eu> References: <86leeltqcb.fsf@ltc.des.no> 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 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <86leeltqcb.fsf@ltc.des.no> X-Spamd-Result: default: False [-2.73 / 15.00]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-1.00)[-0.997]; NEURAL_HAM_MEDIUM(-0.74)[-0.738]; ONCE_RECEIVED(0.10)[]; MIME_GOOD(-0.10)[text/plain]; FREEFALL_USER(0.00)[pi]; TO_MATCH_ENVRCPT_ALL(0.00)[]; ARC_NA(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:12502, ipnet:2001:14f8::/32, country:DE]; RCPT_COUNT_TWO(0.00)[2]; R_SPF_SOFTFAIL(0.00)[~all]; DMARC_NA(0.00)[freebsd.org]; RCVD_COUNT_ONE(0.00)[1]; R_DKIM_NA(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; MLMMJ_DEST(0.00)[current@freebsd.org] X-Spamd-Bar: -- X-Rspamd-Queue-Id: 4RM35j4fQ1z4kl8 Hi! > At some point between 42d088299c (4 May) and f0c9703301 (26 June), a > deadlock was introduced in ZFS. It is still present as of 9c2823bae9 (4 > August) and is 100% reproducable just by starting poudriere bulk in a > 16-core VM and waiting a few hours until deadlkres kicks in. I have a amd based builder, 32 cores, run 437e1e37dfca from Thu Jul 27 01:26:39 CEST 2023 and do not see those crashes. zpool get feature@block_cloning zroot NAME PROPERTY VALUE SOURCE zroot feature@block_cloning enabled local -- pi@opsec.eu +49 171 3101372 Now what ?