Disk disconnects, with immediate reconnect

[Oliver Brandmueller]

Hi,

On Fri, Mar 02, 2012 at 09:49:59AM +0100, Willem Jan Withagen wrote:
> On my ZFS server:
> (info on: http://www.tegenbosch28.nl/FreeBSD/systems/ZFS/ )
> 
> +ahcich4: Timeout on slot 23 port 0
> +ahcich4: is 00000000 cs 00800000 ss 00000000 rs 00800000 tfd c0 serr
> 00000000 cmd 0004d717
> +(ada3:ahcich4:0:0:0): lost device
> +(ada3:ahcich4:0:0:0): removing device entry
> +ada3 at ahcich4 bus 0 scbus5 target 0 lun 0
> +ada3: <ST31500341AS CC1H> ATA-8 SATA 2.x device
> +ada3: 300.000MB/s transfers (SATA 2.x, UDMA6, PIO 8192bytes)
> +ada3: Command Queueing enabled
> +ada3: 1430799MB (2930277168 512 byte sectors: 16H 63S/T 16383C)
> 
> The reconnect occurs immediately after the disconnect.
> 
> I had some discussions with Jeremy Chadwick, so below are the smartctl
> stats.
> 
> The system was not particularly busy at that moment.
> Is this disk failure, or why other did it disconnect.

I suggest changing the disk:

>   5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail 
> Always       -       13

I guess, this growing soon and fast ...

> 197 Current_Pending_Sector  0x0012   100   100   000    Old_age  
> Always       -       3
> 198 Offline_Uncorrectable   0x0010   100   100   000    Old_age  
> Offline      -       3

Doesn't look too promising.

- Oliver

-- 
| Oliver Brandmueller          http://sysadm.in/         ob at sysadm.in |
|                        Ich bin das Internet. Sowahr ich Gott helfe. |