当IOx的SD卡为FAT格式时，Dockerd在IE3400上无法启动

简介

本文档介绍如何修复SD卡不是ext4格式化时Docker守护程序无法在IE3400上启动的问题。

问题

IE3400使用SD卡存储与IOx应用相关的存储。如果SD卡未采用ext4格式，则会导致问题。

以下是症状：

当您尝试通过IOx GUI部署应用时，会看到以下消息：

Application Deployment Failed: Invalid Archive file: Unable to extract docker rootfs /flash11/iox/tmpArchiverPznor to /flash11/iox/tmpExtractYXZJbE/rootfs Error:global name 'app_mount_dir' is not defined

从日志/控制台，当您启用IOx或重新启动后IOx启动时，会看到这些消息。

ie3400#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
ie3400(config)#iox
Warning: Do not remove SD flash card when IOx is enabled or errors on SD device could occur.
 
*Feb 21 12:45:27.045: %UICFGEXP-6-SERVER_NOTIFIED_START: R0/0: psd: Server iox has been notified to start
*Feb 21 12:45:30.737: %PMAN-3-PROCFAIL: R0/0: root: The process dockerd has failed (rc 1)
*Feb 21 12:45:32.184: %PMAN-3-PROCHOLDDOWN: R0/0: root: The process dockerd has been helddown (rc 1)
*Feb 21 12:46:57.983: %IM-6-IOX_ENABLEMENT: R0/0: ioxman: IOX is ready.

解决方案

此问题与SD卡的文件系统有关。如果卡的格式不是ext4，例如FAT/vFAT，则似乎会出现问题。

要检查SD卡上的当前文件系统，可以使用：

ie3400#sh sdflash: file
Filesystem: sdflash
Filesystem Path: /flash11
Filesystem Type: vfat
Mounted: Read/Write

如输出所示，此SD卡的格式为FAT/vFAT。

要解决此问题，请首先停止/禁用IOx。

ie3400#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
ie3400(config)#no iox
Notify IOx to stop. To safely remove SD card, please wait until IOx is stopped.
*Feb 21 12:48:01.615: %UICFGEXP-6-SERVER_NOTIFIED_STOP: R0/0: psd: Server iox has been notified to stop

 使用show iox命令确保完全停止。

ie3400#sh iox

IOx Infrastructure Summary:
---------------------------
IOx service (CAF)         : Not Running
IOx service (HA)          : Not Supported
IOx service (IOxman)      : Not Running
IOx service (Sec storage) : Not Supported
Libvirtd   1.3.4          : Running
Dockerd                   : Not Running

接下来，正确格式化卡以用于IOx，您可以使用此命令。

请记住，这会清除SD卡上的所有数据。

ie3400#format sdflash: ext4
Format operation may take a while. Continue? [confirm]
Format operation will destroy all data in "sdflash:".  Continue? [confirm]
format completed with no errors

Format of sdflash: complete

完成后，再次启动/启用IOx。

ie3400#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
ie3400(config)#iox
Warning: Do not remove SD flash card when IOx is enabled or errors on SD device could occur.

*Feb 21 12:49:18.310: %UICFGEXP-6-SERVER_NOTIFIED_START: R0/0: psd: Server iox has been notified to start
*Feb 21 12:49:48.165: %IM-6-IOX_ENABLEMENT: R0/0: ioxman: IOX is ready.

如您所见，不再显示有关dockerd的错误消息，并使用此命令show iox检查状态。

ie3400#sh iox

IOx Infrastructure Summary:
---------------------------
IOx service (CAF) 1.10.0.1 : Running
IOx service (HA)          : Not Supported
IOx service (IOxman)      : Running
IOx service (Sec storage) : Not Supported
Libvirtd   1.3.4          : Running
Dockerd    18.03.0        : Running