[Bug 236480] [zfs] [panic] solaris assert: dn->dn_type != DMU_OT_NONE

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236480

Julien Cigar <julien at perdition.city> changed:

           What    |Removed                     |Added
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                 CC|                            |julien at perdition.city

--- Comment #4 from Julien Cigar <julien at perdition.city> ---
I'm suffering the same problem on a freshly 12.0-RELEASE running PostgreSQL
11.1 in a jail with nullfs mounts:

chouffe% mount -t nullfs
/data/jails/pg11 on /jails/pg11/data (nullfs, local)
/data/jails/pg11/data11 on /jails/pg11/data/data11 (nullfs, local)
/data/jails/pg11/backups on /jails/pg11/data/backups (nullfs, local)

chouffe% jls
   JID  IP Address      Hostname                      Path
     1  192.168.10.39   pg11.prod.lan                 /jails/pg11

I could login to the system but a simple "ls" hangs and I had to login on the
iLO console and issue an hard reset. The system is running the GENERIC kernel
with the following:

chouffe% more /boot/loader.conf 
aesni_load="YES"
boot_multicons="YES"
boot_serial="YES"
comconsole_port="0x2F8"
console="comconsole,efi"
cpu_microcode_load="YES"
cpu_microcode_name="/boot/firmware/intel-ucode.bin"
geom_mirror_load="YES"
hw.vga.textmode="1"
kern.geom.label.disk_ident.enable="0"
kern.geom.label.gptid.enable="0"
kern.racct.enable="1"
vfs.zfs.min_auto_ashift="12"
zfs_load="YES"

chouffe% more /etc/sysctl.conf 
vfs.zfs.min_auto_ashift=12
kern.ipc.somaxconn=2048
vfs.zfs.arc_max=25769803776
vfs.nfsd.server_max_nfsvers=4
vfs.nfsd.server_min_nfsvers=4

I couldn't capture any useful crash dump unfortunately ..

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