** Description changed: [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 + - 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" + + Can be simulated with: + for f in /sys/class/sas_phy/phy-1\:*/maximum_linkrate; do + echo "3.0 Gbit" | sudo tee $f + done [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.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1821408 Title: scsi: libsas: Support SATA PHY connection rate unmatch fixing during discovery To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1821408/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
