Hi, I have a fedora25 system with a MegaRAID SAS 9260-8i. I believe there's 8 500GB SSDs connected. It appears one (or more?) may be having a problem. I'm now noticing this message periodically in the kernel logs: [Wed Jun 28 01:40:06 2017] ata1.00: exception Emask 0x0 SAct 0x0 SErr 0x400001 action 0x6 frozen [Wed Jun 28 01:40:06 2017] ata1: SError: { RecovData Handshk } [Wed Jun 28 01:40:06 2017] ata1.00: cmd a0/00:00:00:08:00/00:00:00:00:00/a0 tag 29 pio 16392 in Get event status notification 4a 01 00 00 10 00 00 00 08 00res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) [Wed Jun 28 01:40:06 2017] ata1.00: status: { DRDY } [Wed Jun 28 01:40:06 2017] ata1: hard resetting link [Wed Jun 28 01:40:06 2017] ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [Wed Jun 28 01:40:06 2017] ata1.00: configured for UDMA/133 [Wed Jun 28 01:40:06 2017] ata1: EH complete Is it something to be concerned with? What level of panic? :-) It appears to recover normally? Is it a device or disk issue? How can I identify which disk is involved? This is the information on the control from lspci: 05:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2108 [Liberator] (rev 05) Subsystem: LSI Logic / Symbios Logic MegaRAID SAS 9260-8i Flags: bus master, fast devsel, latency 0, IRQ 29, NUMA node 0 I/O ports at 7000 [size=256] Memory at df960000 (64-bit, non-prefetchable) [size=16K] Memory at df900000 (64-bit, non-prefetchable) [size=256K] Expansion ROM at df940000 [disabled] [size=128K] Capabilities: [50] Power Management version 3 Capabilities: [68] Express Endpoint, MSI 00 Capabilities: [d0] Vital Product Data Capabilities: [a8] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [c0] MSI-X: Enable+ Count=15 Masked- Capabilities: [100] Advanced Error Reporting Capabilities: [138] Power Budgeting <?> Kernel driver in use: megaraid_sas Kernel modules: megaraid_sas Thanks for any ideas. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html