gmirror insert error: Synchronization request failed (error=1)

[Pawel Jakub Dawidek]

On Fri, Dec 05, 2008 at 04:33:38AM -0800, Charlie La Mothe wrote:
> I have three SATA disks: ad6, ad7, and ad8.
> 
> I just installed a fresh copy of FreeBSD 7.0 amd64 (minimal) on ad6s1a.
> 
> I setup a gmirror with: gmirror -vb round-robin gm0 /dev/ad6s1a.  I  
> edited my fstab, and told my loader.conf to load geom_mirror.
> 
> The machine boots up fine, however I run into an error when I try to  
> insert an additional component:
> 
> # gmirror insert gm0 /dev/ad7s1d
> # tail /var/log/messages
> Dec  5 04:27:51 monopoly kernel: GEOM_MIRROR: Device gm0: rebuilding  
> provider ad7s1d.
> Dec  5 04:27:51 monopoly kernel: GEOM_MIRROR: Synchronization request  
> failed (error=1). ad7s1d[WRITE(offset=0, length=131072)]
> Dec  5 04:27:51 monopoly kernel: GEOM_MIRROR: Device gm0: provider  
> ad7s1d disconnected.
> Dec  5 04:27:51 monopoly kernel: GEOM_MIRROR: Device gm0: rebuilding  
> provider ad7s1d stopped.
> 
> # gmirror status
>       Name    Status  Components
> mirror/gm0  DEGRADED  ad6s1a
> 
> # gmirror list
> Geom name: gm0
> State: DEGRADED
> Components: 2
> Balance: round-robin
> Slice: 4096
> Flags: NONE
> GenID: 4
> SyncID: 1
> ID: 1745622490
> Providers:
> 1. Name: mirror/gm0
>    Mediasize: 5368708608 (5.0G)
>    Sectorsize: 512
>    Mode: r1w1e1
> Consumers:
> 1. Name: ad6s1a
>    Mediasize: 5368709120 (5.0G)
>    Sectorsize: 512
>    Mode: r1w1e1
>    State: ACTIVE
>    Priority: 0
>    Flags: NONE
>    GenID: 4
>    SyncID: 1
>    ID: 3963284114
> 
> 
> I haven't been able to find any explanation for this error.  The same  
> error occurs when I attempt to insert the ad8s1d component.
> 
> All of the hard drives diagnose to be working.
> 
> 
> BSD label Reference:
> 
> Each disk has one slice.
> 
> Summary:
> 	5GB UFS boot partition
> 	5GB Swap
> 	~950GB unused partition (for zfs / raidz).
> 
> # bsdlabel /dev/ad6s1
> 
> # /dev/ad6s1:
> 8 partitions:
> #        size   offset    fstype   [fsize bsize bps/cpg]
>   a: 10485760        0    4.2BSD     2048 16384 28528
>   b: 10485760 10485760      swap
>   c: 1953520002        0    unused        0     0         # "raw"  
> part, don't edit
>   d: 1932548482 20971520    4.2BSD        0     0     0
> 
> # bsdlabel /dev/ad7s1
> 
> # /dev/ad7s1:
> 8 partitions:
> #        size   offset    fstype   [fsize bsize bps/cpg]
>   b: 10485760 10485760      swap
>   c: 1953520002        0    unused        0     0         # "raw"  
> part, don't edit
>   d: 10485760        0    4.2BSD        0     0     0

This is your problem. No partition should start at offset 0 and yet
sysinstall creates those.

>   e: 1932548482 20971520    4.2BSD        0     0     0
> 
> 
> # bsdlabel /dev/ad8s1
> 
> # /dev/ad8s1:
> 8 partitions:
> #        size   offset    fstype   [fsize bsize bps/cpg]
>   b: 10485760 10485760      swap
>   c: 1953520002        0    unused        0     0         # "raw"  
> part, don't edit
>   d: 10485760        0    4.2BSD        0     0     0
>   e: 1932548482 20971520    4.2BSD        0     0     0
> 
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-- 
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd at FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!
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