full system backup
Hannes Mayer
h.mayer at inode.at
Sat Jul 3 20:06:52 UTC 2004
Patrick Boutilier wrote:
>
>
> Hannes Mayer wrote:
>
>> Edwin Dicker wrote:
>>
>>> Hi All,
>>>
>>> When I want to perform a full system backup to tape, Do I need to backup
>>> /sys/* as well ???
>>> I notice that my DLT is quite slow when performing the backup of the
>>> /sys/*
>>> files.
>>>
>>> I get these kind of messages :
>>> cpio: File ./sys/class/scsi_host/host0/host_busy shrunk by 4094 bytes,
>>> padding with zeros
>>> ./sys/class/scsi_host/host0/host_busy
>>> cpio: File ./sys/class/scsi_host/host0/unique_id shrunk by 4094 bytes,
>>> padding with zeros
>>>
>>> I suspect that these files are all created when booting the system which
>>> means that they do not need to be backed-up
>>> Am I suspecting right or wrong ?
>>
>>
>>
>> Edwin,
>>
>> /sys, /proc and /dev are system directories and you don't need to backup
>> them, since they're recreated by the system anyway on every reboot.
>> Backing up those would make no sense, cause of the former reason.
>> Actually those are not regular files, but virtual files in the virtual
>> file-system.
>
>
> /dev does not get recreated on reboot .
>
> However you can get most dev entries back by installing the dev rpm. If
> you have lots of custom devices in dev it wouldn't hurt to back them up.
Whoops... you're right! Sorry about that!
I'm not sure if a recovery of all other files will be possible in the first
case or if the system will then run without any problems ?
I too thought about this, but I'm still backing up only my data and not any
system files.
Cheers,
Hannes.
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