I have found that I have a disk drive that is being lost and then reconnected. It is reconnected in about seven seconds after being lost. As a result there has never been a problen when the drive is accessed. I found the message in /var/log/messages. This has happened a couple of times that I am now aware off. I have run
What is the cause of this?
Do I have a bad drive that needs to be replaced?
Any ideas?
Here is the environment
Here is the problem
Here is /etc/fstab
fsck /ad24 on the device and it returns clean. The device is used for backups and each time the error occurs the disk has been in an idle state and not being accessed so there has been no errors that was manifested. I have not been able to find any adequate information as to a cause or fix.What is the cause of this?
Do I have a bad drive that needs to be replaced?
Any ideas?
Here is the environment
Code:
Copyright (c) 1992-2012 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
The Regents of the University of California. All rights reserved.
FreeBSD is a registered trademark of The FreeBSD Foundation.
FreeBSD 9.1-RELEASE #0 r243825: Tue Dec 4 09:23:10 UTC 2012
root@farrell.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
CPU: AMD FX(tm)-4130 Quad-Core Processor (3817.46-MHz K8-class CPU)
Origin = "AuthenticAMD" Id = 0x600f12 Family = 15 Model = 1 Stepping = 2
Features=0x178bfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,MMX,FXSR,SSE,SSE2,HTT>
Features2=0x1e98220b<SSE3,PCLMULQDQ,MON,SSSE3,CX16,SSE4.1,SSE4.2,POPCNT,AESNI,XSAVE,OSXSAVE,AVX>
AMD Features=0x2e500800<SYSCALL,NX,MMX+,FFXSR,Page1GB,RDTSCP,LM>
AMD Features2=0x1c9bfff<LAHF,CMP,SVM,ExtAPIC,CR8,ABM,SSE4A,MAS,Prefetch,OSVW,IBS,XOP,SKINIT,WDT,LWP,FMA4,NodeId,Topology,<b23>,<b24>>
TSC: P-state invariant, performance statistics
real memory = 8589934592 (8192 MB)
avail memory = 8189784064 (7810 MB)
Event timer "LAPIC" quality 400
ACPI APIC Table: <ALASKA A M I>
FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs
FreeBSD/SMP: 1 package(s) x 4 core(s)
cpu0 (BSP): APIC ID: 16
cpu1 (AP): APIC ID: 17
cpu2 (AP): APIC ID: 18
cpu3 (AP): APIC ID: 19Here is the problem
Code:
Jun 19 03:21:41 Phaedra kernel: (ada5:(pass6:ahcich9:0:ahcich9:0:0:0:0): lost device
Jun 19 03:21:41 Phaedra kernel: 0): passdevgonecb: devfs entry is gone
Jun 19 03:21:41 Phaedra kernel: (ada5:ahcich9:0:0:0): removing device entry
Jun 19 03:21:48 Phaedra kernel: ada5 at ahcich9 bus 0 scbus10 target 0 lun 0
Jun 19 03:21:48 Phaedra kernel: ada5: <WDC WD1002FAEX-00Z3A0 05.01D05> ATA-8 SATA 3.x device
Jun 19 03:21:48 Phaedra kernel: ada5: 600.000MB/s transfers (SATA 3.x, UDMA6, PIO 8192bytes)
Jun 19 03:21:48 Phaedra kernel: ada5: Command Queueing enabled
Jun 19 03:21:48 Phaedra kernel: ada5: 953869MB (1953525168 512 byte sectors: 16H 63S/T 16383C)
Jun 19 03:21:48 Phaedra kernel: ada5: Previously was known as ad24Here is /etc/fstab
Code:
# Device Mountpoint FStype Options Dump Pass#
/dev/ada0p2 / ufs rw 1 1
/dev/ada0p3 none swap sw 0 0
/dev/ad18s1 /storage1 ufs rw 1 1
/dev/ad20s1 /storage2 ufs rw 1 1
/dev/ad14s1 /storage3 ufs rw 1 1
/dev/ad16s1 /storage4 ufs rw 1 1
/dev/ad24s1 /storage5 ufs rw 1 1
/dev/cd0 /cdrom cd9660 ro,noauto 0 0
/dev/da0s1 /flash msdosfs rw,noauto 0 0
/dev/da0s1 /flash0 msdosfs rw,noauto 0 0
/dev/da1s1 /flash1 msdosfs rw,noauto 0 0
/dev/da2s1 /flash2 msdosfs rw,noauto 0 0
/dev/da3s1 /flash3 msdosfs rw,noauto 0 0
//nobody@Prometheus/public /Prometheus_public smbfs rw,noauto -N 0 0