Hi Experts,

I am recently started to see the following messages in /var/log/messages and this is only printed whenever the server boots up after reboot. This is a production node and things are working pretty fine. Not sure why suddenly this log started to print after server reboots..

SUSe version
NAME="SLES"
VERSION="12"
VERSION_ID="12"
PRETTY_NAME="SUSE Linux Enterprise Server 12"
ID="sles"
ANSI_COLOR="0;32"
CPE_NAME="cpe:/o:suse:sles:12"


proNode:/var/log # grep -i SATA messages-20180216
2018-02-15T03:37:59.582349-05:00 proNode kernel: [ 18.932764] ahci 0000:00:1f.2: AHCI 0001.0200 32 slots 6 ports 3 Gbps 0x3f impl SATA mode
2018-02-15T03:37:59.582357-05:00 proNode kernel: [ 18.975786] ata1: SATA max UDMA/133 abar m2048@0xfabd8000 port 0xfabd8100 irq 74
2018-02-15T03:37:59.582358-05:00 proNode kernel: [ 18.975792] ata2: SATA max UDMA/133 abar m2048@0xfabd8000 port 0xfabd8180 irq 75
2018-02-15T03:37:59.582359-05:00 proNode kernel: [ 18.975800] ata3: SATA max UDMA/133 abar m2048@0xfabd8000 port 0xfabd8200 irq 76
2018-02-15T03:37:59.582359-05:00 proNode kernel: [ 18.975806] ata4: SATA max UDMA/133 abar m2048@0xfabd8000 port 0xfabd8280 irq 77
2018-02-15T03:37:59.582360-05:00 proNode kernel: [ 18.975813] ata5: SATA max UDMA/133 abar m2048@0xfabd8000 port 0xfabd8300 irq 78
2018-02-15T03:37:59.582437-05:00 proNode kernel: [ 18.975819] ata6: SATA max UDMA/133 abar m2048@0xfabd8000 port 0xfabd8380 irq 79
2018-02-15T03:37:59.582467-05:00 proNode kernel: [ 19.294378] ata1: SATA link down (SStatus 0 SControl 300)
2018-02-15T03:37:59.582474-05:00 proNode kernel: [ 19.614199] ata2: SATA link down (SStatus 0 SControl 300)
2018-02-15T03:37:59.582475-05:00 proNode kernel: [ 19.934022] ata3: SATA link down (SStatus 0 SControl 300)
2018-02-15T03:37:59.582487-05:00 proNode kernel: [ 20.253799] ata4: SATA link down (SStatus 0 SControl 300)
2018-02-15T03:37:59.582487-05:00 proNode kernel: [ 20.573669] ata5: SATA link down (SStatus 0 SControl 300)
2018-02-15T03:37:59.582488-05:00 proNode kernel: [ 20.893492] ata6: SATA link down (SStatus 0 SControl 300)
akron-supl-chassis-0-gmpc-0:/var/log # cat /proc/sys/kernel/tainted
0

Any insight will be really helpful. Thanks in advance!

Br,
Amit