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
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