Intercambio en caliente fuera un error de SATA /dev/sda unidad funcionaba bien, pero cuando me fui de intercambio en una nueva unidad, que no fue reconocido:
[root@fs-2 ~]# tail -18 /var/log/messages
May 5 16:54:35 fs-2 kernel: ata1: exception Emask 0x10 SAct 0x0 SErr 0x50000 action 0xe frozen
May 5 16:54:35 fs-2 kernel: ata1: SError: { PHYRdyChg CommWake }
May 5 16:54:40 fs-2 kernel: ata1: link is slow to respond, please be patient (ready=0)
May 5 16:54:45 fs-2 kernel: ata1: device not ready (errno=-16), forcing hardreset
May 5 16:54:45 fs-2 kernel: ata1: soft resetting link
May 5 16:54:50 fs-2 kernel: ata1: link is slow to respond, please be patient (ready=0)
May 5 16:54:55 fs-2 kernel: ata1: SRST failed (errno=-16)
May 5 16:54:55 fs-2 kernel: ata1: soft resetting link
May 5 16:55:00 fs-2 kernel: ata1: link is slow to respond, please be patient (ready=0)
May 5 16:55:05 fs-2 kernel: ata1: SRST failed (errno=-16)
May 5 16:55:05 fs-2 kernel: ata1: soft resetting link
May 5 16:55:10 fs-2 kernel: ata1: link is slow to respond, please be patient (ready=0)
May 5 16:55:40 fs-2 kernel: ata1: SRST failed (errno=-16)
May 5 16:55:40 fs-2 kernel: ata1: limiting SATA link speed to 1.5 Gbps
May 5 16:55:40 fs-2 kernel: ata1: soft resetting link
May 5 16:55:45 fs-2 kernel: ata1: SRST failed (errno=-16)
May 5 16:55:45 fs-2 kernel: ata1: reset failed, giving up
May 5 16:55:45 fs-2 kernel: ata1: EH complete
He intentado un par de cosas para hacer que el servidor de encontrar el nuevo /dev/sda, tales como rescan-scsi-bus.sh pero que no funcionan:
[root@fs-2 ~]# echo "---" > /sys/class/scsi_host/host0/scan
-bash: echo: write error: Invalid argument
[root@fs-2 ~]#
[root@fs-2 ~]# /root/rescan-scsi-bus.sh -l
[snip]
0 new device(s) found.
0 device(s) removed.
[root@fs-2 ~]#
[root@fs-2 ~]# ls /dev/sda
ls: /dev/sda: No such file or directory
Terminé de reiniciar el servidor. /dev/sda fue reconocido, me fijo el software RAID, y todo está bien ahora. Pero para la próxima vez, ¿cómo puedo hacer que Linux reconozca una nueva unidad SATA tengo intercambiar en caliente sin necesidad de reiniciar?
El sistema operativo en cuestión es RHEL5.3:
[root@fs-2 ~]# cat /etc/redhat-release
Red Hat Enterprise Linux Server release 5.3 (Tikanga)
El disco duro es un Seagate Barracuda ES.2 SATA 3.0 Gb/s de 500 GB, modelo ST3500320NS.
Aquí está el lscpi de salida:
[root@fs-2 ~]# lspci
00:00.0 RAM memory: nVidia Corporation MCP55 Memory Controller (rev a2)
00:01.0 ISA bridge: nVidia Corporation MCP55 LPC Bridge (rev a3)
00:01.1 SMBus: nVidia Corporation MCP55 SMBus (rev a3)
00:02.0 USB Controller: nVidia Corporation MCP55 USB Controller (rev a1)
00:02.1 USB Controller: nVidia Corporation MCP55 USB Controller (rev a2)
00:04.0 IDE interface: nVidia Corporation MCP55 IDE (rev a1)
00:05.0 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a3)
00:05.1 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a3)
00:05.2 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a3)
00:06.0 PCI bridge: nVidia Corporation MCP55 PCI bridge (rev a2)
00:08.0 Bridge: nVidia Corporation MCP55 Ethernet (rev a3)
00:09.0 Bridge: nVidia Corporation MCP55 Ethernet (rev a3)
00:0a.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a3)
00:0b.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a3)
00:0c.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a3)
00:0d.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a3)
00:0e.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a3)
00:0f.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a3)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
00:19.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration
00:19.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map
00:19.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller
00:19.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control
03:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200e [Pilot] ServerEngines (SEP1) (rev 02)
04:00.0 PCI bridge: NEC Corporation uPD720400 PCI Express - PCI/PCI-X Bridge (rev 06)
04:00.1 PCI bridge: NEC Corporation uPD720400 PCI Express - PCI/PCI-X Bridge (rev 06)
Actualización: tal vez En una docena de casos, hemos sido obligados a reiniciar los servidores, ya de intercambio en caliente no ha "trabajado." Gracias por las respuestas a mirar más en el controlador SATA. He incluido la salida de lspci para la problemática del sistema por encima de (nombre de host: fs-2). Yo todavía podría utilizar un poco de ayuda la comprensión de lo que exactamente no es compatible con el hardware sabio en los términos de intercambio en caliente para ese sistema. Por favor, hágamelo saber lo que otra salida, además de lspci podría ser útil.
La buena noticia es que los hot swap "trabajado" hoy en día en uno de nuestros servidores (host: www-1), lo cual es muy raro para nosotros. Aquí está la salida de lspci:
[root@www-1 ~]# lspci
00:00.0 RAM memory: nVidia Corporation MCP55 Memory Controller (rev a2)
00:01.0 ISA bridge: nVidia Corporation MCP55 LPC Bridge (rev a3)
00:01.1 SMBus: nVidia Corporation MCP55 SMBus (rev a3)
00:02.0 USB Controller: nVidia Corporation MCP55 USB Controller (rev a1)
00:02.1 USB Controller: nVidia Corporation MCP55 USB Controller (rev a2)
00:04.0 IDE interface: nVidia Corporation MCP55 IDE (rev a1)
00:05.0 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a3)
00:05.1 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a3)
00:05.2 IDE interface: nVidia Corporation MCP55 SATA Controller (rev a3)
00:06.0 PCI bridge: nVidia Corporation MCP55 PCI bridge (rev a2)
00:08.0 Bridge: nVidia Corporation MCP55 Ethernet (rev a3)
00:09.0 Bridge: nVidia Corporation MCP55 Ethernet (rev a3)
00:0b.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a3)
00:0c.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a3)
00:0f.0 PCI bridge: nVidia Corporation MCP55 PCI Express bridge (rev a3)
00:18.0 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] HyperTransport Configuration
00:18.1 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Address Map
00:18.2 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] DRAM Controller
00:18.3 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Miscellaneous Control
00:18.4 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Link Control
00:19.0 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] HyperTransport Configuration
00:19.1 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Address Map
00:19.2 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] DRAM Controller
00:19.3 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Miscellaneous Control
00:19.4 Host bridge: Advanced Micro Devices [AMD] K10 [Opteron, Athlon64, Sempron] Link Control
03:00.0 VGA compatible controller: Matrox Graphics, Inc. MGA G200e [Pilot] ServerEngines (SEP1) (rev 02)
04:00.0 PCI bridge: NEC Corporation uPD720400 PCI Express - PCI/PCI-X Bridge (rev 06)
04:00.1 PCI bridge: NEC Corporation uPD720400 PCI Express - PCI/PCI-X Bridge (rev 06)
09:00.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1064ET PCI-Express Fusion-MPT SAS (rev 04)
