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Mon, 21 Jul 2025 21:28:21 -0400 (EDT) Date: Tue, 22 Jul 2025 02:28:19 +0100 From: void To: freebsd-current@freebsd.org Subject: zfs panic VERIFY3U Message-ID: Mail-Followup-To: freebsd-current@freebsd.org 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; format=flowed Content-Disposition: inline X-Spamd-Result: default: False [0.10 / 15.00]; NEURAL_SPAM_MEDIUM(0.99)[0.991]; NEURAL_HAM_SHORT(-0.88)[-0.880]; NEURAL_SPAM_LONG(0.59)[0.588]; MID_RHS_NOT_FQDN(0.50)[]; DMARC_POLICY_ALLOW(-0.50)[f-m.fm,none]; R_DKIM_ALLOW(-0.20)[f-m.fm:s=fm2,messagingengine.com:s=fm2]; R_SPF_ALLOW(-0.20)[+ip4:103.168.172.128/27]; MIME_GOOD(-0.10)[text/plain]; RCVD_IN_DNSWL_LOW(-0.10)[103.168.172.154:from]; ARC_NA(0.00)[]; RCVD_COUNT_THREE(0.00)[3]; MLMMJ_DEST(0.00)[freebsd-current@freebsd.org]; RCPT_COUNT_ONE(0.00)[1]; FREEMAIL_FROM(0.00)[f-m.fm]; MIME_TRACE(0.00)[0:+]; FREEMAIL_ENVFROM(0.00)[f-m.fm]; FROM_EQ_ENVFROM(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TO_DN_NONE(0.00)[]; ASN(0.00)[asn:151847, ipnet:103.168.172.0/24, country:AU]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_TLS_LAST(0.00)[]; MISSING_XM_UA(0.00)[]; DKIM_TRACE(0.00)[f-m.fm:+,messagingengine.com:+]; PREVIOUSLY_DELIVERED(0.00)[freebsd-current@freebsd.org]; DWL_DNSWL_NONE(0.00)[messagingengine.com:dkim]; FROM_HAS_DN(0.00)[] X-Rspamd-Queue-Id: 4bmKQv4jYvz3pf0 X-Spamd-Bar: / Hi, After an unplanned power outage where the UPS also failed, when the (15-CURRENT) system tried to come back up, it panicked and dropped to debugger. It seems this happens after zfs.ko loads and then imports the pool. The pool is raidz2 with 7*4Tb disks. The machine was building something at the time of the outage. There was probably a 'medium' amount of disk I/O but it wasn't thrashing. zpool import causes the following output at the console: https://void.f-m.fm.user.fm/panic/zpool-broken.png Is there anything I can do to rescue the pool? Not tried importing it readonly yet. The system is at main-n278643. It's *not* root-on-zfs. The boot disk is ufs2. --