Re: boot fail (panic: free: guard2 fail _at_ 0x7c237010 + 2061 from unknown:0 )

From: mike tancsa <mike_at_sentex.net>
Date: Wed, 16 Jun 2021 17:21:59 -0400
Still not sure what the issue is, but I was able to work around it by
switching to EFI boot.  Just had to adjust the partition info, copy
/boot/lua onto the restored image and adjust loader.conf accordingly.
But at least it I can tick this server off the list :)

    ---Mike

On 6/16/2021 12:41 PM, mike tancsa wrote:
> As part of our backup strategy, I am trying to do bare metal restores of
> our servers.  So far so good, but one of our older ones is failing with
>
>                                                                           
> BTX loader 1.00  BTX version is
> 1.02                                           
> Consoles: internal
> video/keyboard                                              
> BIOS drive C: is
> disk0                                                         
> BIOS 607kB/1975840kB available
> memory                                          
>                                                                                
>
> FreeBSD/x86 ZFS enabled bootstrap loader, Revision
> 1.1                         
> (Tue Jul 17 15:23:15 EDT 2018
> mdt_at_fileserver1.sentex.ca)                         
> panic: free: guard2 fail _at_ 0x7c237010 + 2061 from
> unknown:0                    
> --> Press a key on the console to reboot <--               
>
>
> This is an older releng11 r336457 box that I am trying to restore. I am
> doing the restoration on RELENG13. I am doing a zpool create -d and just
> enable lz4. I am guessing there is something about that old pool that
> will not work ? Every other server I have done has worked really well,
> but none are as old as this guy.  Any ideas how to narrow this down ?
>
> I am making it as follows
>
> gpart create -s gpt $DESTDEVICE
> gpart add -a 4k -s 512k -t freebsd-boot $DESTDEVICE
> gpart add -a 4k  -s 8G -t freebsd-swap -l swap1 $DESTDEVICE
> gpart add -a 4k  -t freebsd-zfs -l $DISKNAME $DESTDEVICE
> gpart bootcode -b /boot-releng11/pmbr -p /boot-releng11/gptzfsboot -i 1
> $DESTDEVICE
>
> gnop create -S 4096 /dev/gpt/$DISKNAME
>
> zpool create -d -f -o altroot=/mnt -o feature_at_lz4_compress=enabled -o
> cachefile=/var/tmp/zpool.cache $POOLNAME /dev/gpt/$DISKNAME.nop
> zpool export $POOLNAME
> gnop destroy /dev/gpt/$DISKNAME.nop
>
> zpool import -o altroot=/mnt -o cachefile=/var/tmp/zpool.cache $POOLNAME
>
> <then a bunch of zfs send | zfs recv >
>
> the live machine shows
>
>  zdb -v
> fileserver1:
>     version: 5000
>     name: 'fileserver1'
>     state: 0
>     txg: 23498113
>     pool_guid: 10657256123199195564
>     hostid: 3022456803
>     hostname: ''
>     com.delphix:has_per_vdev_zaps
>     vdev_children: 1
>     vdev_tree:
>         type: 'root'
>         id: 0
>         guid: 10657256123199195564
>         create_txg: 4
>         children[0]:
>             type: 'raidz'
>             id: 0
>             guid: 18123299127602057786
>             nparity: 1
>             metaslab_array: 40
>             metaslab_shift: 34
>             ashift: 12
>             asize: 1931688804352
>             is_log: 0
>             create_txg: 4
>             com.delphix:vdev_zap_top: 35
>             children[0]:
>                 type: 'disk'
>                 id: 0
>                 guid: 9163277686889746146
>                 path: '/dev/ada0p3'
>                 whole_disk: 1
>                 DTL: 197
>                 create_txg: 4
>                 com.delphix:vdev_zap_leaf: 36
>             children[1]:
>                 type: 'disk'
>                 id: 1
>                 guid: 8474459820264337096
>                 path: '/dev/ada1p3'
>                 whole_disk: 1
>                 DTL: 196
>                 create_txg: 4
>                 com.delphix:vdev_zap_leaf: 37
>             children[2]:
>                 type: 'disk'
>                 id: 2
>                 guid: 14194255123576696065
>                 path: '/dev/ada2p3'
>                 whole_disk: 1
>                 DTL: 195
>                 create_txg: 4
>                 com.delphix:vdev_zap_leaf: 38
>             children[3]:
>                 type: 'disk'
>                 id: 3
>                 guid: 15226426451126911594
>                 path: '/dev/ada3p3'
>                 whole_disk: 1
>                 DTL: 194
>                 create_txg: 4
>                 com.delphix:vdev_zap_leaf: 39
>     features_for_read:
>         com.delphix:hole_birth
>         com.delphix:embedded_data
>
>
Received on Wed Jun 16 2021 - 21:21:59 UTC

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