[j-nsp] snapshot problem with just hard drive config

[harry]

You need to buy the optional flash for snapshot to work. Once installed it
will become the default boot source. When booted from the flash you can run
the snapshot command to mirror the flash environment onto the HD. Now, if
the flash fails, or upon your command, the router will boot from the HD. 

Normally folks run a snapshot just before doing major software upgrades, say
a jinstall from 5.x to 6.x. This leaves you (hopefully) with a default boot
into 6.x on the flash and a snapshot image of the old 5.x environment in
case things do not go well with the new code, or you just want a "dual boot"
option.

If you do boot from the HD, a snapshot will mirror that environment back to
the flash.

HTHs.


BTW: The M7i and M10i base systems do not contain flash, or removable PCMCIA
media for that matter. This was done to reduce costs.




> -----Original Message-----
> From: juniper-nsp-bounces at puck.nether.net 
> [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of LOM
> Sent: Thursday, March 11, 2004 5:31 PM
> To: juniper-nsp at puck.nether.net
> Subject: [j-nsp] snapshot problem with just hard drive config
> 
> 
> Hi folks,
>  
> I have a snapshot problem.
> I have a M7i with an only disk drive , there is no flash card.
>  
> When I request a system snapshot it says : 
> ----
> rasmus at edi> request system snapshot 
> Snapshot requires two pieces of storage media.
> error: This is a hard disk only configuration, snapshot not supported.
> -----
>  
> I know that snapshot is just copying "/" to "altroot/ and 
> also "/config" "/altconfig" , am I wrong ?
>  
> Why it need 2 pieces of storage media? Is there a way that I 
> can get snapshot ?
> 
>  
> Do you have an idea,
>  
> thanks for all,
>  
> PS : show system storage output : 
>  
>  
>  
>  
> rasmus at edi> show system storage 
> Filesystem        512-blocks       Used      Avail Capacity Mounted on
> /dev/ad1s1a           437522      64274     338248     16%  /
> devfs                     32         32          0    100%  /dev/
> /dev/vn0               21900      21900          0    100%
> /packages/mnt/jbase
> /dev/vn1               68408      68408          0    100%
> /packages/mnt/jkernel-6.2R1.5
> /dev/vn2               17680      17680          0    100%
> /packages/mnt/jpfe-M7i-6.2R1.5
> /dev/vn3                4108       4108          0    100%
> /packages/mnt/jdocs-6.2R1.5
> /dev/vn4               26888      26888          0    100%
> /packages/mnt/jroute-6.2R1.5
> /dev/vn5                9432       9432          0    100%
> /packages/mnt/jcrypto-6.2R1.5
> mfs:153              1016286          6     934978      0%  /tmp
> /dev/ad1s1e            48570         50      44636      0%  /config
> procfs                     8          8          0    100%  /proc
> /dev/ad1s1f         36364494     811950   32643386      2%  /var
>  
> rasmus at edi> 
> _______________________________________________
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