Am Sonntag, 30. März 2008 schrieb Tejun Heo:
> Hello,
>
> Hans-Peter Jansen wrote:
> >>>> Should I be worried? smartd doesn't show anything suspicious on
> >>>> those.
> >>
> >> Can you please post the result of "smartctl -a /dev/sdX"?
> >
> > Here's the last smart report from two of the offending drives. As noted
> > before, I did the hardware reorganization, replaced the dog slow 3ware
> > 9500S-8 and the SiI 3124 with a single Areca 1130 and retired the
> > drives for now, but a nephew already showed interest. What do you
> > think, can I cede those drives with a clear conscience? The
> > Hardware_ECC_Recovered values are really worrisome, aren't they?
>
> Different vendors use different scales for the raw values. The value is
> still pegged at the highest so it could be those raw values are okay or
> that the vendor just doesn't update value field accordingly. My P120
> says 0 for the raw value and 904635 for hardware ECC recovered so there
> is some difference. What do other non-failing drives say about those
> values?
The only non-failing drive was sdf as it was running in standby mode in this
md raid 5 ensemble:
20080323-011337-sdc.log:195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age Always - 162956700
20080323-011337-sdc.log:196 Reallocated_Event_Count 0x0032 253 253 000 Old_age Always - 0
20080323-011337-sdc.log:197 Current_Pending_Sector 0x0012 253 253 000 Old_age Always - 0
20080323-011337-sdc.log:198 Offline_Uncorrectable 0x0030 253 253 000 Old_age Offline - 0
20080323-011337-sdc.log:199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
20080323-011338-sdd.log:195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age Always - 162520674
20080323-011338-sdd.log:196 Reallocated_Event_Count 0x0032 253 253 000 Old_age Always - 0
20080323-011338-sdd.log:197 Current_Pending_Sector 0x0012 253 253 000 Old_age Always - 0
20080323-011338-sdd.log:198 Offline_Uncorrectable 0x0030 253 253 000 Old_age Offline - 0
20080323-011338-sdd.log:199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
20080323-011338-sde.log:195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age Always - 148429049
20080323-011338-sde.log:196 Reallocated_Event_Count 0x0032 253 253 000 Old_age Always - 0
20080323-011338-sde.log:197 Current_Pending_Sector 0x0012 253 253 000 Old_age Always - 0
20080323-011338-sde.log:198 Offline_Uncorrectable 0x0030 253 253 000 Old_age Offline - 0
20080323-011338-sde.log:199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
20080323-011339-sdf.log:195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age Always - 1559
20080323-011339-sdf.log:196 Reallocated_Event_Count 0x0032 253 253 000 Old_age Always - 0
20080323-011339-sdf.log:197 Current_Pending_Sector 0x0012 253 253 000 Old_age Always - 0
20080323-011339-sdf.log:198 Offline_Uncorrectable 0x0030 253 253 000 Old_age Offline - 0
20080323-011339-sdf.log:199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always - 0
> Hmmm... If the drive is failing FLUSHs, I would expect to see elevated
> reallocation counters and maybe some pending counts. Aieee.. weird.
But there are no reallocations nor any pending sectors on any of them.
> >>>> It's been 4 samsung drives at all hanging on a sata sil 3124:
> >>
> >> FLUSH_EXT timing out usually indicates that the drive is having
> >> problem writing out what it has in its cache to the media. There was
> >> one case where FLUSH_EXT timeout was caused by the driver failing to
> >> switch controller back from NCQ mode before issuing FLUSH_EXT but that
> >> was on sata_nv. There hasn't been any similar problem on sata_sil24.
> >
> > Hmm, I didn't noticed any data distortions, and if there where, they
> > live on as copies in their new home..
>
> It should have appeared as read errors. Maybe the drive successfully
^^^^
write (I guess)
> wrote those sectors after 30+ secs timeout.
That would point to some driver issue, wouldn't it? Roger Heflin also
experienced similar behavior with that controller, which wasn't
reproducible with another.
I can offer to you rebuilding that md in a test environment, and giving
you access to it, if you're interested.
Anyway, thanks for caring Tejun,
Pete
--
To unsubscribe from this list: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
