what is Zflash: under file systems 3550 switch

Answered Question
Mar 25th, 2010
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Hi all,

i upgrade the ios in 3550 switch


when i do


Switch#sh File systems
File Systems:

     Size(b)     Free(b)      Type  Flags  Prefixes
*   15998976     6282752     flash     rw   flash:******************************
           -           -    opaque     ro   bs:
           -           -    opaque     rw   vb:
    15998976     6282752   unknown     rw   zflash:**********************
           -           -    opaque     rw   system:
           -           -    opaque     rw   tmpsys:
      393216      389278     nvram     rw   nvram:
           -           -    opaque     ro   xmodem:
           -           -    opaque     ro   ymodem:
        


i see  2 ios image of same size but one is of type flash and other is unknown


Anybody know what is zflash?  and is it ok if i delete zflash?


thanks

mahesh

Correct Answer by Jon Marshall about 7 years 2 months ago

mahesh18 wrote:


Hi Jon


i did this


Switch#verify flash:c3550-ipservicesk9-mz.122-44.SE6.bin
%Error verifying flash:c3550-ipservicesk9-mz.122-44.SE6.bin (No such file or dir
ectory)
Switch#


thanks

mahehs


Mahesh


Did a quick search and it seems that using the verify command that way might not be supported on all switches.


Jon

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johnnylingo Thu, 03/25/2010 - 16:11
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Weird.   I'm not familiar enough with the 3550 to tell you for sure.


What does "dir all-filesystems" show?

mahesh18 Thu, 03/25/2010 - 16:15
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Hi,


Here is output


Switch#dir all-filesystems
Directory of flash:/

    2  -rwx     9707290  Mar 25 2010 16:37:50 -06:00  c3550-ipservicesk9-mz.122-
44.SE6.bin
    3  -rwx        2838  Mar 25 2010 16:54:23 -06:00  config.text
  406  -rwx         285  Feb 28 1993 17:14:38 -07:00  info.ver
  407  -rwx         580  Mar 21 2010 15:09:27 -06:00  vlan.dat
    4  -rwx          24  Mar 25 2010 16:54:23 -06:00  private-config.text
    5  -rwx        1048  Mar 25 2010 16:54:23 -06:00  multiple-fs
    6  -rwx           0  Mar 22 2010 15:34:22 -06:00  env_vars
    7  -rwx          42  Mar 22 2010 15:34:22 -06:00  system_env_vars

15998976 bytes total (6282752 bytes free)
Directory of zflash:/

    2  -rwx     9707290  Mar 25 2010 16:37:50 -06:00  c3550-ipservicesk9-mz.122-
44.SE6.bin
    3  -rwx        2838  Mar 25 2010 16:54:23 -06:00  config.text
  406  -rwx         285  Feb 28 1993 17:14:38 -07:00  info.ver
  407  -rwx         580  Mar 21 2010 15:09:27 -06:00  vlan.dat
    4  -rwx          24  Mar 25 2010 16:54:23 -06:00  private-config.text
    5  -rwx        1048  Mar 25 2010 16:54:23 -06:00  multiple-fs
    6  -rwx           0  Mar 22 2010 15:34:22 -06:00  env_vars
    7  -rwx          42  Mar 22 2010 15:34:22 -06:00  system_env_vars

15998976 bytes total (6282752 bytes free)
Directory of system:/

    2  -r--           0                      default-running-config
    4  dr-x           0                      memory
    1  -rw-        2838                      running-config
    3  dr-x           0                      vfiles

No space information available
Directory of tmpsys:/

No files in directory

No space information available
Directory of nvram:/

  380  -rw-        2838                      startup-config
  381  ----          24                      private-config
    1  -rw-           0                      ifIndex-table

393216 bytes total (389278 bytes free)



Also directory of system and nvram shows no date ?


thanks for reply

Jon Marshall Thu, 03/25/2010 - 16:54
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Mahesh


zflash is a read-only copy of flash. I doubt whether you will be able to delete it. I think it is an internal filesystem to the switch that is not configurable by the network administrator.


Jon

mahesh18 Thu, 03/25/2010 - 17:24
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Hi jon



Thanks for reply again.

one last thing on this  when i run command


verify /md5 c3550-ipservicesk9-mz.122-44.SE6.bin  it verifies flash  --


.................................................Done!
verify /md5 (flash:c3550-ipservicesk9-mz.122-44.SE6.bin) = a829d14ab1ccd3ecf77b99d025d188ce


but when i run the command

Switch#verify flashc3550-ipservicesk9-mz.122-44.SE6.bin
%Error verifying flash:flashc3550-ipservicesk9-mz.122-44.SE6.bin (No such file o
r directory)
Switch#


It does not work do you know why is this so?


thanks

mahesh

Jon Marshall Thu, 03/25/2010 - 17:45
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Mahesh


Switch#verify flashc3550-ipservicesk9-mz.122-44.SE6.bin
%Error verifying flash:flashc3550-ipservicesk9-mz.122-44.SE6.bin (No such file o
r directory)
Switch#


Try


verify flash:c3550-ipservicesk9-mz.122-44.SE6.bin  ie. add the ':' between flash and the image name.


Jon

mahesh18 Thu, 03/25/2010 - 17:52
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Hi Jon


i did this


Switch#verify flash:c3550-ipservicesk9-mz.122-44.SE6.bin
%Error verifying flash:c3550-ipservicesk9-mz.122-44.SE6.bin (No such file or dir
ectory)
Switch#


thanks

mahehs

Correct Answer
Jon Marshall Thu, 03/25/2010 - 18:08
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mahesh18 wrote:


Hi Jon


i did this


Switch#verify flash:c3550-ipservicesk9-mz.122-44.SE6.bin
%Error verifying flash:c3550-ipservicesk9-mz.122-44.SE6.bin (No such file or dir
ectory)
Switch#


thanks

mahehs


Mahesh


Did a quick search and it seems that using the verify command that way might not be supported on all switches.


Jon

mahesh18 Thu, 03/25/2010 - 18:11
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Hi jon


thanks one again for helping it out.


Mahesh

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