尝试将 Aironet 1262 更新为新固件时，我收到此错误：
ap#archive download-sw /overwrite scp://root@10.10.10.10/ap3g1-k9w8-tar.152-4.JB5.tar
Unable to create temp dir "flash:/update"
我的第一个想法是闪光灯已满。这很奇怪，因为通常更新固件，我覆盖了旧固件。然而，竟然dir导致了一个错误：
ap#dir
%Error opening flash:/ (Invalid argument)
如何在不尝试重新启动 AP 并冒着因闪存错误而无法启动的风险的情况下解决此问题？
许多 Cisco 设备都包含fsck用于检查文件系统的命令。如果您在闪存上运行此命令，它将尝试为您修复文件系统错误。这些是我的结果：
ap#fsck flash:
Fsck operation may take a while. Continue? [confirm]
flashfs[3]: WARNING - Unable to allocate backup blocks.
Please free some space on the flash file system.
flashfs[3]: 202 files, 7 directories
flashfs[3]: 0 orphaned files, 0 orphaned directories
flashfs[3]: Total bytes: 31610880
flashfs[3]: Bytes used: 31610880
flashfs[3]: Bytes available: 0
flashfs[3]: flashfs fsck took 19 seconds.
Fsck of flash: complete
好吧，这似乎已经证明文件系统已满。但是它是否解决了闪存系统的问题，以便我可以查看闪存系统以查找要删除的文件？是的：
ap#dir
Directory of flash:/
2 -rwx 64 Mar 1 1993 00:03:30 +00:00 sensord_CSPRNG0
3 -rwx 12257280 Mar 1 2002 00:44:20 +00:00 ap3g1-k9w7-tar.152-2.JB.tar
4 -rwx 1864 Mar 1 1993 00:04:03 +00:00 backup.config
5 -rwx 294235 Apr 3 2014 22:01:12 +00:00 ap_log_r1_0.log
6 -rwx 0 Apr 4 2014 08:12:42 +00:00 env_vars.tmp
7 -rwx 2072 Mar 1 1993 20:26:00 +00:00 private-multiple-fs
8 drwx 832 Mar 1 2002 00:54:21 +00:00 ap3g1-k9w7-mx.152-2.JB
11 -rwx 3567 Mar 1 1993 20:26:00 +00:00 private-config
12 -rwx 64 Apr 3 2014 22:16:37 +00:00 sensord_CSPRNG1
13 -rwx 25960 Mar 1 1993 01:05:43 +00:00 event.log
14 -rwx 4 Feb 18 2014 21:02:33 +00:00 FOC16441UX9
15 -rwx 158878 Mar 7 1993 20:49:30 +00:00 event.r1
16 -rwx 294235 Apr 3 2014 22:01:17 +00:00 ap_log_r1_1.log
17 -rwx 294235 Apr 3 2014 22:01:22 +00:00 ap_log_r1_2.log
18 -rwx 6111232 Apr 3 2014 22:16:23 +00:00 r1.rcore
19 -rwx 0 Apr 3 2014 22:16:27 +00:00 r1.rcore.info
20 -rwx 217 Apr 3 2014 20:16:20 +00:00 env_vars
31610880 bytes total (0 bytes free)
ap#
您可以看到为什么文件系统已满，有人将固件 tarball 直接复制到 AP 的闪存中，而不是使用存档命令远程拉取它。不过很容易修复，只需删除 tarball：
ap#del flash:ap3g1-k9w7-tar.152-2.JB.tar
Delete filename [ap3g1-k9w7-tar.152-2.JB.tar]?
Delete flash:/ap3g1-k9w7-tar.152-2.JB.tar? [confirm]
ap#dir
Directory of flash:/
2 -rwx 64 Mar 1 1993 00:03:30 +00:00 sensord_CSPRNG0
4 -rwx 1864 Mar 1 1993 00:04:03 +00:00 backup.config
5 -rwx 294235 Apr 3 2014 22:01:12 +00:00 ap_log_r1_0.log
6 -rwx 0 Apr 4 2014 08:12:42 +00:00 env_vars.tmp
7 -rwx 2072 Mar 1 1993 20:26:00 +00:00 private-multiple-fs
8 drwx 832 Mar 1 2002 00:54:21 +00:00 ap3g1-k9w7-mx.152-2.JB
11 -rwx 3567 Mar 1 1993 20:26:00 +00:00 private-config
12 -rwx 64 Apr 3 2014 22:16:37 +00:00 sensord_CSPRNG1
13 -rwx 25960 Mar 1 1993 01:05:43 +00:00 event.log
14 -rwx 4 Feb 18 2014 21:02:33 +00:00 FOC16441UX9
15 -rwx 158878 Mar 7 1993 20:49:30 +00:00 event.r1
16 -rwx 294235 Apr 3 2014 22:01:17 +00:00 ap_log_r1_1.log
17 -rwx 294235 Apr 3 2014 22:01:22 +00:00 ap_log_r1_2.log
18 -rwx 6111232 Apr 3 2014 22:16:23 +00:00 r1.rcore
19 -rwx 0 Apr 3 2014 22:16:27 +00:00 r1.rcore.info
20 -rwx 217 Apr 3 2014 20:16:20 +00:00 env_vars
31610880 bytes total (12257280 bytes free)
ap#
好的，文件系统修复了。已创建可用空间。所有这些都解决了更新固件的原始问题吗？是的：
ap#archive download-sw /overwrite scp://root@10.10.10.10/ap3g1-k9w8-tar.152-4.JB5.tar
examining image...
Password:
Sending file modes: C0644 10475520 ap3g1-k9w8-tar.152-4.JB5.tar
extracting info (286 bytes)
Image info:
Version Suffix: k9w8-.152-4.JB5
Image Name: ap3g1-k9w8-mx.152-4.JB5
Version Directory: ap3g1-k9w8-mx.152-4.JB5
Ios Image Size: 594432
Total Image Size: 10465792
Image Feature: WIRELESS LAN|LWAPP
Image Family: AP3G1
Wireless Switch Management Version: 7.6.100.0
Extracting files...!