New: aic7xxx: fails to notice if a disk is unplugged

https://bugzilla.kernel.org/show_bug.cgi?id=16463

Summary: aic7xxx: fails to notice if a disk is unplugged
Product: SCSI Drivers
Version: 2.5
Kernel Version: 2.6.32-24-generic
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Other
AssignedTo: [email protected]
ReportedBy: [email protected]
Regression: No

I have an external 7-disk array of SCA disks, connected to a backplane, with a disk module that speaks 40-pin Fast SCSI:

[   15.992335] scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 7.0
[   15.992336]         <Adaptec 2940 SCSI adapter>
[   15.992337]         aic7870: Single Channel A, SCSI Id=7, 16/253 SCBs

I was testing my RAID-6 setup on these, so I yanked one of them while they were in an MD. dmesg didn't report any change in disk status, and while any IO to the disk stalled in state D forever, Linux never noticed the disk was gone.

I tried using the convenient script I keep around for forcing rescans of SCSI and its related friends, which can be found at
http://bash.cyberciti.biz/diskadmin/rescan-linux-scsi-bus/, but even after running that, the controller still didn't notice the disk was missing.

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https://bugzilla.kernel.org/show_bug.cgi?id=16463

Alan <[email protected]> changed:

What |Removed |Added
----------------------------------------------------------------------------

             Status|NEW                         |RESOLVED
                 CC|                            |[email protected]
         Resolution|                            |OBSOLETE

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