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Hi Shaun,<br>
I have seen something very similar on an Oracle X4-2<br>
I added two 256MB Samsung 850 PRO and created a mirrored zpool<br>
The system zpool was a mirror of two SAS Seagate 600GB which came withe
the system.<br>
The system was running Solaris 10 with latest patches.<br>
After a few hours I saw checksum errors on both disks.<br>
Oracle told me they did not support the Samsung disks so I swapped them
for Intel DC S3500 which have been working fine for months.<br>
The 850 PRO drives worked fine on a X4140 but this has a different raid
controller.<br>
So I guess you need to be careful which SSD's you use with certain
controllers :-(<br>
<br>
Shaun McGuane wrote:
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<p class="MsoNormal">Hi List,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I want to report very strange SSD behaviour on a
new pool I setup.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The hardware is a HP DL180 G6 Server with the
LSI 9207-8i Card<o:p></o:p></p>
<p class="MsoNormal">And 8x 1TB Samsung SSD Pro drives. Running
omnios-10b9c79<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">All the drives are brand spanking new setup in a
raidz2 array.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Within 2 months the below has happened and there
has been very<o:p></o:p></p>
<p class="MsoNormal">Little use on this array. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> pool: SSD-TANK<o:p></o:p></p>
<p class="MsoNormal">state: DEGRADED<o:p></o:p></p>
<p class="MsoNormal">status: One or more devices are faulted in
response to persistent errors.<o:p></o:p></p>
<p class="MsoNormal"> Sufficient replicas exist for the pool
to continue functioning in a<o:p></o:p></p>
<p class="MsoNormal"> degraded state.<o:p></o:p></p>
<p class="MsoNormal">action: Replace the faulted device, or use
'zpool clear' to mark the device<o:p></o:p></p>
<p class="MsoNormal"> repaired.<o:p></o:p></p>
<p class="MsoNormal"> scan: scrub repaired 23K in 1h12m with 0
errors on Mon Jul 25 20:13:04 2016<o:p></o:p></p>
<p class="MsoNormal">config:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"> NAME STATE
READ WRITE CKSUM<o:p></o:p></p>
<p class="MsoNormal"> SSD-TANK DEGRADED
1 67 35<o:p></o:p></p>
<p class="MsoNormal"> raidz2-0 DEGRADED
4 72 113<o:p></o:p></p>
<p class="MsoNormal"> c5t500253884014D0D3d0 ONLINE
0 0 2<o:p></o:p></p>
<p class="MsoNormal"> c5t50025388401F767Ad0 DEGRADED
0 0 19 too many errors<o:p></o:p></p>
<p class="MsoNormal"> c5t50025388401F767Bd0 FAULTED
0 0 0 too many errors<o:p></o:p></p>
<p class="MsoNormal"> c5t50025388401F767Dd0 ONLINE
0 0 0<o:p></o:p></p>
<p class="MsoNormal"> c5t50025388401F767Fd0 ONLINE
0 0 1<o:p></o:p></p>
<p class="MsoNormal"> c5t50025388401F7679d0 ONLINE
0 0 2<o:p></o:p></p>
<p class="MsoNormal"> c5t50025388401F7680d0 REMOVED
0 0 0<o:p></o:p></p>
<p class="MsoNormal"> c5t50025388401F7682d0 ONLINE
0 0 1<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Can anyone suggest why I would have this problem
where I am seeing CKSUM errors<o:p></o:p></p>
<p class="MsoNormal">On most disks and while only one has faulted
others have been degraded or removed.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks<o:p></o:p></p>
<p class="MsoNormal">Shaun<o:p></o:p></p>
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