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Wed, 15 Dec 2021 19:53:02 +0000 Received: by kubenode539.mail-prod1.omega.gq1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID ea266c8b99e073df45b333b70a3fbf00; Wed, 15 Dec 2021 19:52:59 +0000 (UTC) Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable 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 (Mac OS X Mail 14.0 \(3654.120.0.1.13\)) Subject: Re: CURRENT: ZFS freezes system beyond reboot Message-Id: <62F7A6A7-2AD3-4881-A1C2-8EFC2AB34133@yahoo.com> Date: Wed, 15 Dec 2021 11:52:58 -0800 To: freebsd@walstatt-de.de, freebsd-current X-Mailer: Apple Mail (2.3654.120.0.1.13) References: <62F7A6A7-2AD3-4881-A1C2-8EFC2AB34133.ref@yahoo.com> X-Rspamd-Queue-Id: 4JDmBY0Jqlz3rrw X-Spamd-Bar: --- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=yahoo.com header.s=s2048 header.b=E7sBxZHG; dmarc=pass (policy=reject) header.from=yahoo.com; spf=pass (mx1.freebsd.org: domain of marklmi@yahoo.com designates 66.163.184.201 as permitted sender) smtp.mailfrom=marklmi@yahoo.com X-Spamd-Result: default: False [-3.50 / 15.00]; RCVD_TLS_LAST(0.00)[]; ARC_NA(0.00)[]; R_DKIM_ALLOW(-0.20)[yahoo.com:s=s2048]; NEURAL_HAM_MEDIUM(-1.00)[-0.996]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; FREEMAIL_FROM(0.00)[yahoo.com]; MV_CASE(0.50)[]; MIME_GOOD(-0.10)[text/plain]; DWL_DNSWL_NONE(0.00)[yahoo.com:dkim]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_SPF_ALLOW(-0.20)[+ptr:yahoo.com]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[yahoo.com:+]; RCPT_COUNT_TWO(0.00)[2]; RCVD_IN_DNSWL_NONE(0.00)[66.163.184.201:from]; NEURAL_HAM_SHORT(-1.00)[-1.000]; DMARC_POLICY_ALLOW(-0.50)[yahoo.com,reject]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[yahoo.com]; ASN(0.00)[asn:36646, ipnet:66.163.184.0/21, country:US]; RCVD_COUNT_TWO(0.00)[2]; MID_RHS_MATCH_FROM(0.00)[]; RWL_MAILSPIKE_POSSIBLE(0.00)[66.163.184.201:from] Reply-To: marklmi@yahoo.com From: Mark Millard via freebsd-current X-Original-From: Mark Millard X-ThisMailContainsUnwantedMimeParts: N From: FreeBSD User wrote on Date: Wed, 15 Dec 2021 18:55:09 +0100 : > . . . >=20 > It is spooky, if not to say "buggy", if ZFS is capable of freezing the = whole box even if > the essential operating system stuff is isolated on a dedicated UFS = filesystem. I would guess that, for ZFS being in use, everything related to, for example, the ARC is "essential operating system stuff", given its tie to wired memory usage and the like that greatly changes the wired memory usage pattern/sizing compared to ZFS not being involved on the system (UFS only). (I only use ZFS in a simpler context, however.) =3D=3D=3D Mark Millard marklmi at yahoo.com