Hi, Toasters
We have one disk experiencing the following
error:
Mon Apr 22 11:57:14 CES [ispfc_main:error]: Disk 0a.33: op
0x28:00ab0ae8:0008 sector 0 recovered error - (1 5d, 0)
Mon Apr 22
11:57:14 CES [scsi.cmd.checkCondition:error]: Device 0a.33: Check Condition: CDB
0x28:00ab0ae8:0008: Sense Data recovered error - (0x1 - 0x5d 0x0
0x43).
Does anyone have any idea of what causes this
error? Is it a harware error or just an error produced because a 'missmatch' in
the data stored in the data and the parity disk?
Usually, a media recovered error is reported by
ontap as the following (usually, during disk scrub):
Sun Apr 14 01:24:11 CES [correonfs2: ispfc_main:error]: Disk
8a.18: op 0x28:01c67000:0080 sector 29782108 medium error - Unrecovered read
error (3 11, 0)
Sun Apr 14 01:24:11 CES [correonfs2: ispfc_main:notice]: Disk
8a.18: sector 29782108 will be reassigned
Sun Apr 14 01:24:11 CES
[correonfs2: ispfc_main:error]: Medium err for disk 8a.18 (serial no.
3EK0PAKS00007216RQAM).
Sun Apr 14 01:24:11 CES [correonfs2:
scsi.cmd.checkCondition:error]: Device 8a.18: Check Condition: CDB
0x28:01c67000:0080: Sense Data medium error - Unrecovered read error (0x3 - 0x11
0x0 0xe4).
Sun Apr 14 01:24:11 CES [correonfs2: ispfc_main:error]: Disk
8a.18: op 0x28:01c67058:0008 sector 29782108 medium error - Unrecovered read
error (3 11, 0)
Sun Apr 14 01:24:11 CES [correonfs2: ispfc_main:notice]: Disk
8a.18: sector 29782108 will be reassigned
Sun Apr 14 01:24:11 CES
[correonfs2: ispfc_main:error]: Medium err for disk 8a.18 (serial no.
3EK0PAKS00007216RQAM).
Sun Apr 14 01:24:11 CES [correonfs2:
scsi.cmd.checkCondition:error]: Device 8a.18: Check Condition: CDB
0x28:01c67058:0008: Sense Data medium error - Unrecovered read error (0x3 - 0x11
0x0 0xe4).
Sun Apr 14 01:24:11 CES [correonfs2: raid_stripe_owner:info]: read
error from disk 8a.18 (S/N 3EK0PAKS00007216RQAM) block 3722763
Sun Apr 14
01:24:11 CES [correonfs2: raid_stripe_owner:notice]: Rewriting bad block from
parity on disk 8a.18, block #3722763
Sun Apr 14 01:24:12 CES [correonfs2:
ispfc_main:notice]: Disk 8a.18: sector 29782108 was reassigned
In the case below, it seems like sector 29782108
has been reassigned (by the internal hardware of the disk, I guess). In the
first case (disk 0a.33), it has been recovered (I don't know how, it does not
say anything about the parity disk).
What is a 'Sense Data error'? How is it
produced?
Just willing to know a little more about how ontap
manages its disks ...
Thanks in advantage.
Kind Regards.
_____________________________________________________
Oscar Rodríguez Hernández
Dpto. HelpDesk de Sistemas
email: orh@satec.es
SATEC/CONVEX
Avda. Europa 34 A
28023
Aravaca MADRID (SPAIN)
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