https://bugzilla.kernel.org/show_bug.cgi?id=218035 Bug ID: 218035 Summary: Adaptec 7805H (pm80xx) hangs even on light I/O with some Seagate HDDs Product: IO/Storage Version: 2.5 Hardware: All OS: Linux Status: NEW Severity: high Priority: P3 Component: SCSI Assignee: linux-scsi@xxxxxxxxxxxxxxx Reporter: nickosbarkas@xxxxxxxxx Regression: No Created attachment 305277 --> https://bugzilla.kernel.org/attachment.cgi?id=305277&action=edit pm80xx hangs with Exos 7E2 Hello guys, this is an old issue that happens when reading/writing data on specific Seagate SAS HDDs on a pm80xx based adapter. Affected models: ST2000NM0045 (Constellation ES.3) ST4000NM0023 (Enterprise Capacity v5 or Exos 7E2) Please note that neither the disks nor the adapter are defective, they work fine. The disks have the latest available microcode installed, but the issue occurred with the factory microcode too. Even with very small sequential or random I/O, the driver enters into a not workable state. linux-scsi thread for this issue: https://www.spinics.net/lists/linux-scsi/msg116653.html I have uploaded a dmesg excerpt with debug logging that shows what happens when I run a random i/o test with 128k block reads with 32 threads for 1 minute. -- You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.
