Re: [PATCH v2 06/14] nvme: Rapid Path Failure Recovery read controller identify fields
From: Hannes Reinecke
Date: Mon Feb 02 2026 - 22:29:35 EST
On 1/30/26 23:34, Mohamed Khalfella wrote:
TP8028 Rapid path failure added new fileds to controller identifyReviewed-by: Hannes Reinecke <hare@xxxxxxx>
response. Read CIU (Controller Instance Uniquifier), CIRN (Controller
Instance Random Number), and CCRL (Cross-Controller Reset Limit) from
controller identify response. Expose CIU and CIRN as sysfs attributes
so the values can be used directrly by user if needed.
TP4129 KATO Corrections and Clarifications defined CQT (Command Quiesce
Time) which is used along with KATO (Keep Alive Timeout) to set an upper
limit for attempting Cross-Controller Recovery.
Signed-off-by: Mohamed Khalfella <mkhalfella@xxxxxxxxxxxxxxx>
---
drivers/nvme/host/core.c | 5 +++++
drivers/nvme/host/nvme.h | 11 +++++++++++
drivers/nvme/host/sysfs.c | 23 +++++++++++++++++++++++
3 files changed, 39 insertions(+)
Cheers,
Hannes
--
Dr. Hannes Reinecke Kernel Storage Architect
hare@xxxxxxx +49 911 74053 688
SUSE Software Solutions GmbH, Frankenstr. 146, 90461 Nürnberg
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