Ubuntu
linux package

  1. Bug #1821408
  2. Comment #0

Comment 0 for bug 1821408

Revision history for this message
dann frazier (dannf) wrote :

[Impact]
SATA disks may be unusable
will not be usable when:
 - The disk is connected through a SAS expander
 - Controller uses a libsas-based driver (mvsas, aic94xx, hisi_sas)
 - link rate between expander & disk is greater than link between controller and expander

[Test Case]
See conditions in "Impact"

[Fix]
cec9771d2e954 scsi: libsas: Support SATA PHY connection rate unmatch fixing during discovery

[Regression Risk]
Impact is restricted to drivers that use libsas: mvsas, aic94xx & hisi_sas.
Code change is all within an "if" statement that meets these restrictions.
A bug in this code could possibly reduce the speed of an otherwise working disk connection.