MSR810 boot-loader解压文件显示异常

现场用u盘copy版本ipe文件到flash中，然后boot-loader指定flash中的ipe文件，u盘未拔出，解压过程中回显显示解压的是usb中的ipe, 后续u盘拔出后导致版本文件丢失。

[H3C]dis version

H3C Comware Software, Version 7.1.064, Release 0707P16

Copyright (c) 2004-2019 New H3C Technologies Co., Ltd. All rights reserved.

<H3C>copy usba0:/MSR810-CMW710-R0821P18.ipe flash:/

Copy usba0:/MSR810-CMW710-R0821P18.ipe to flash:/MSR810-CMW710-R0821P18.ipe? [Y/N]:y

Copying file usba0:/MSR810-CMW710-R0821P18.ipe to flash:/MSR810-CMW710-R0821P18.ipe............................................................................. Done.

<H3C>dir

Directory of flash: (YAFFS2)

   0 -rw-        3035 Jan 03 2011 01:18:36   1.CFG

   1 -rw-        2324 Jan 01 2011 00:57:21   2003_local.pfx

   2 -rw-        1258 Jan 01 2011 00:56:57   2003_server.cer

   3 -rw-        2609 Jan 01 2011 17:55:56   219801A0S8M1640000182016072710204135436.ak

   4 -rw-         817 Jan 01 2011 00:08:42   ANBANK_SM2_ROOT.cer

   5 -rw-        6306 Jan 01 2011 00:04:29   ClockPanel.java

   6 -rw-    87754752 Jan 01 2011 00:11:06   MSR810-CMW710-R0821P18.ipe

<H3C>boot-loader file flash:/MSR810-CMW710-R0821P18.ipe main

Verifying the file flash:/MSR810-CMW710-R0821P18.ipe on the device........Done.

H3C MSR810 images in IPE:

  msr810-cmw710-boot-r0821p18.bin

  msr810-cmw710-system-r0821p18.bin

  msr810-cmw710-wifidog-r0821p18.bin

  msr810-cmw710-wwd-r0821p18.bin

  msr810-cmw710-security-r0821p18.bin

  msr810-cmw710-voice-r0821p18.bin

  msr810-cmw710-data-r0821p18.bin

This command will set the main startup software images. Please do not reboot the device during the upgrade. Continue? [Y/N]:y

Add images to the device.

Decompressing file msr810-cmw710-boot-r0821p18.bin to usba0:/msr810-cmw710-boot-r0821p18.bin....Done.

Decompressing file msr810-cmw710-system-r0821p18.bin to usba0:/msr810-cmw710-system-r0821p18.bin.........................Done.

Decompressing file msr810-cmw710-security-r0821p18.bin to usba0:/msr810-cmw710-security-r0821p18.bin...Done.

Decompressing file msr810-cmw710-voice-r0821p18.bin to usba0:/msr810-cmw710-voice-r0821p18.bin...Done.

Decompressing file msr810-cmw710-data-r0821p18.bin to usba0:/msr810-cmw710-data-r0821p18.bin...Done.

Decompressing file msr810-cmw710-wifidog-r0821p18.bin to usba0:/msr810-cmw710-wifidog-r0821p18.bin...Done.

Decompressing file msr810-cmw710-wwd-r0821p18.bin to usba0:/msr810-cmw710-wwd-r0821p18.bin...Done.

Verifying the file usba0:/msr810-cmw710-boot-r0821p18.bin on the device...Done.

Verifying the file usba0:/msr810-cmw710-system-r0821p18.bin on the device.......Done.

Verifying the file usba0:/msr810-cmw710-wifidog-r0821p18.bin on the device...Done.

Verifying the file usba0:/msr810-cmw710-wwd-r0821p18.bin on the device...Done.

Verifying the file usba0:/msr810-cmw710-security-r0821p18.bin on the device...Done.

Verifying the file usba0:/msr810-cmw710-voice-r0821p18.bin on the device...Done.

Verifying the file usba0:/msr810-cmw710-data-r0821p18.bin on the device...Done.

The images that have passed all examinations will be used as the main startup software images at the next reboot on the device.

Decompression completed.

You are recommended to delete the .ipe file after you set startup software images for all slots.

Do you want to delete flash:/MSR810-CMW710-R0821P18.ipe now? [Y/N]:n

设备的机制是如果我指定的本地内存不够时，但是有相关版本在其余空间充足的存储空间中时，设备不会报No sufficient storage space on the device.  而是直接指定到有足够内存的存储介质中进行版本指定

dir确定flash的剩余空间大小，通过清空flash中文件来保证空间充足