[plug] Backups

[Brad Campbell]

Craig Ringer wrote:
> Michael Holland wrote:
> 
>> On Wed, 28 Jul 2004, Craig Ringer wrote:
>>
>>
>>> IFAIK DVD+RW /is/ randomly rewritable, but I don't know what the driver
>>> and filesystem support for that is like under Linux, and it has some
>>> limitations that would make me reluctant to use it.
>>
>>
>>
>> You mean the limited number of write cycles?
> 
> 
> That, and the way most filesystems update the (usually fixed location) 
> superblock(s) very frequently. AFAIK DVD+RW doesn't have any sort of 
> write levelling like flash media does, so that could become a serious 
> issue.
> 
>> Apparently that can be OK,
>> but you must mount it -noatime or it dies very fast.

Could be interesting to try using the mtdblock driver and writing it with a jffs2 filesystem.
Fully journalled, compressed on the fly, naturally write leveling and designed for raw flash so has 
minimal io to maintain flash life. Might be the perfect solution.

Brad