https://bugzilla.kernel.org/show_bug.cgi?id=203247 --- Comment #5 from pkb07815 (pankajcabs@xxxxxxxxx) --- Here is the information: # show raid Raid configuration: Model: LSI MegaRAID SAS 9260-4i Serial: SK72468112 Firmware Version: 2.130.383-2315 Apr 9 00:44:22 ex-etp3 kernel:scsi host0: Avago SAS based MegaRAID driver Apr 9 00:44:22 ex-etp3 kernel:scsi 0:2:0:0: Direct-Access LSI MR9260-4i 2.13 PQ: 0 ANSI: 5 Apr 9 00:44:22 ex-etp3 kernel:sd 0:2:0:0: [sda] 1171062784 512-byte logical blocks: (600 GB/558 GiB) Apr 9 00:44:22 ex-etp3 kernel:sd 0:2:0:0: Attached scsi generic sg0 type 0 Apr 9 00:44:22 ex-etp3 kernel:sd 0:2:0:0: [sda] Write Protect is off Apr 9 00:44:22 ex-etp3 kernel:sd 0:2:0:0: [sda] Mode Sense: 1f 00 10 08 Apr 9 00:44:22 ex-etp3 kernel:sd 0:2:0:0: [sda] Write cache: disabled, read cache: enabled, supports DPO and FUA [admin@ex-etp3 ~]# df -h Filesystem Size Used Avail Use% Mounted on /dev/sda5 2.0G 1.8G 106M 95% / tmpfs 63G 3.0G 60G 5% /dev/shm /dev/sda2 120M 30M 84M 27% /boot /dev/sda1 119M 1.8M 111M 2% /bootmgr /dev/sda8 182M 50M 123M 29% /config /dev/sda9 30G 22G 6.3G 78% /var /dev/sda10 453G 329G 102G 77% /data tmpfs 63G 24K 63G 1% /run tmpfs 64M 980K 64M 2% /vtmp [admin@ex-etp3 ~]# mount /dev/sda5 on / type ext3 (rw) proc on /proc type proc (rw) sysfs on /sys type sysfs (rw) devpts on /dev/pts type devpts (rw,gid=5,mode=620) tmpfs on /dev/shm type tmpfs (rw) /dev/sda2 on /boot type ext3 (ro,noatime,noexec) /dev/sda1 on /bootmgr type ext3 (ro,noatime,noexec) /dev/sda8 on /config type ext3 (rw,noatime,noexec) /dev/sda9 on /var type ext3 (rw,noatime) /dev/sda10 on /data type ext3 (rw,noatime,barrier=0) tmpfs on /dev/shm type tmpfs (rw) tmpfs on /run type tmpfs (rw,nosuid,nodev,strictatime,mode=0755) tmpfs on /vtmp type tmpfs (rw,size=64M) description: Motherboard product: H8DGU vendor: Supermicro physical id: 0 version: 1234567890 serial: NM179S600489 slot: To Be Filled By O.E.M. *-firmware description: BIOS vendor: American Megatrends Inc. physical id: 0 version: FI3.0c date: 12/31/2013 cpu:0 description: CPU product: (To Be Filled By O.E.M.) vendor: Advanced Micro Devices [AMD] physical id: 4 bus info: cpu@0 version: AMD Opteron(tm) Processor 6380 *-storage description: RAID bus controller product: MegaRAID SAS 2108 [Liberator] vendor: LSI Logic / Symbios Logic physical id: 0 bus info: pci@0000:02:00.0 logical name: scsi0 version: 05 width: 64 bits clock: 33MHz capabilities: storage pm pciexpress vpd msi msix bus_master cap_list rom configuration: driver=megaraid_sas latency=0 resources: irq:19 ioport:c000(size=256) memory:fd59c000-fd59ffff memory:fd5c0000-fd5fffff memory:fd5a0000-fd5bffff *-disk description: SCSI Disk product: MR9260-4i vendor: LSI physical id: 2.0.0 bus info: scsi@0:2.0.0 logical name: /dev/sda version: 2.13 serial: 003307152fc3005222f0e91a0db00506 size: 558GiB (599GB) kernel:Linux version 4.9.86 (gcc version 4.8.5 20150623 (Red Hat 4.8.5-4) (GCC) ) #1 SMP PREEMPT the system has lot of IO traffic, this happens intermittently. We are seeing issue mainly after upgrading from 4.1 to 4.9.75 and 4.9.86. -- You are receiving this mail because: You are watching the assignee of the bug.