[OmniOS-discuss] CKSUM error

[Andrew Gabriel]

I had to wait for 5 years before I got my first real checksum error, and 
then two came along at once!
I really wanted some well before that, so I could claim ZFS was 
protecting me from data corruption in my presentations.
;-)

I would check back in logs, FMA, etc to see if anything else was logged.
But for one or two errors, don't worry unless there's some other related 
error report which needs attention.
Drives are spec'ed to return the very occasional uncorrected error (a 
single misdirected write would give you two corrupt blocks). Keep an eye 
on it in case the number starts escalating.

On 28/04/2016 09:09, Martin Truhlář wrote:
> Hello,
>
> Should I be worried, that one of my mirrored disks gave me checksum error? (mirror 3) Is any reaction required?
>
> NAME                       STATE     READ WRITE CKSUM      CAP            Product /napp-it   IOstat mess
> 	dpool                      ONLINE       0     0     0
> 	  mirror-0                 ONLINE       0     0     0
> 	    c1t50014EE00400FA16d0  ONLINE       0     0     0      1 TB           WDC WD1002F9YZ-0   S:0 H:0 T:0
> 	    c1t50014EE2B40F14DBd0  ONLINE       0     0     0      1 TB           WDC WD1003FBYX-0   S:0 H:0 T:0
> 	  mirror-1                 ONLINE       0     0     0
> 	    c1t50014EE05950B131d0  ONLINE       0     0     0      1 TB           WDC WD1002F9YZ-0   S:0 H:0 T:0
> 	    c1t50014EE2B5E5A6B8d0  ONLINE       0     0     0      1 TB           WDC WD1003FBYZ-0   S:0 H:0 T:0
> 	  mirror-2                 ONLINE       0     0     0
> 	    c1t50014EE05958C51Bd0  ONLINE       0     0     0      1 TB           WDC WD1002F9YZ-0   S:0 H:0 T:0
> 	    c1t50014EE0595617ACd0  ONLINE       0     0     0      1 TB           WDC WD1002F9YZ-0   S:0 H:0 T:0
> 	  mirror-3                 ONLINE       0     0     0
> 	    c1t50014EE0596B5DF9d0  ONLINE       0     0     1      1 TB           WDC WD1002F9YZ-0   S:0 H:0 T:0
> 	    c1t50014EE0AEAE9B65d0  ONLINE       0     0     0      1 TB           WDC WD1002F9YZ-0   S:0 H:0 T:0
> 	  mirror-5                 ONLINE       0     0     0
> 	    c1t50014EE0AEABB8E7d0  ONLINE       0     0     0      1 TB           WDC WD1002F9YZ-0   S:0 H:0 T:0
> 	    c1t50014EE0AEB44327d0  ONLINE       0     0     0      1 TB           WDC WD1002F9YZ-0   S:0 H:0 T:0
> 	logs
> 	  c1t55CD2E4000050AC9d0    ONLINE       0     0     0      240.1 GB       INTEL SSDSC2CW24   S:0 H:0 T:0
> 	cache
> 	  c1t55CD2E4000339A59d0    ONLINE       0     0     0      180 GB         INTEL SSDSC2BW18   S:0 H:0 T:0
> 	spares
> 	  c2t2d0                   AVAIL         1 TB           WDC WD10EFRX-68F   S:0 H:0 T:0
>
> Thank you in advance for any advice
> Martin