ZFS: i/o error - all block copies unavailable after upgrading to r225312

[Henri Hennebert]

On 09/01/2011 22:36, Sebastian Chmielewski wrote:
> 
> hi,
> I'm running FreeBSD-CURRENT r224522M installed on ZFS Root and GPT
> partitions and this setup is running fine. Today I've updated to r225312 and
> after rebooting I've got following error message from boot loader:
> 
> ZFS: i/o error - all block copies unavailable

I encounter the same problem. I reboot with mfsBSD and run zpool scrub
without error.

I reboot and get the same error - the error msg repeating 4 or 5 times.

I reboot with  mfsBSD and I then do:

mkdir /rpool
zpool import -R /rpool rpool
mount -t zfs rpool/root /mnt
cd /mnt/boot
mv kernel kernel-error
mkdir kernel
cp kernel-error/* kernel

When I reboot all run smoothly :-o

strange indeed...

Henri


> 
> Then I did "zfs rollback" using rescue disk to previous revision and I was able to
> boot.
> Steps I did to update system:
> 
> zfs snapshot 
> make buildworld
> make buildkernel
> make installkernel
> reboot
> can't boot
> zfs rollback using rescue disk
> boot to previous revision (r224522M).
> 
> Are there any more steps required for this procedure to work?
> My previous updates from source on the same setup where successfull, this is
> the first time I've encountered this error message when upgrading from source.
> 
> My setup:
> gpart show 
> =>       34  250069613  ada0  GPT  (119G)
>          34        128     1  freebsd-boot  (64k)
>         162       1886     5  bios-boot  (943k)
>        2048   16777216     2  !0fc63daf-8483-4772-8e79-3d69d8477de4  (8.0G)
>    16779264   33554432     3  freebsd-ufs  (16G)
>    50333696  199735951     4  freebsd-zfs  (95G)
> 
> Partitions 3 and 4 are separate zfs pools (3 is geli encrypted and 4 is for
> operating system).  
> 
> zfs list
> NAME                        USED  AVAIL  REFER  MOUNTPOINT
> home                       10,4G  5,24G  10,4G  /home
> zroot                      90,2G  3,27G  1,16G  legacy
> 
> /etc/fstab
> # Device		Mountpoint	FStype	Options			Dump	Pass#
> zroot			/		zfs	rw,noatime		0	0
> /dev/acd0		/cdrom		cd9660	ro,noauto		0	0
> proc 			/proc 		procfs 	rw 			0	0
> 
> best regards,