Re: 2GB File limitation

Tim Moore (timothymoore@bigfoot.com)
Fri, 28 Sep 2001 13:17:48 -0700

> Is someone working on a way to overcome the 2GB file limitation in Linux? I
> currently backup several servers using a dedicated hard drive for the
> backups. Recently I saw one backup die saying the the file size had been
> exceeded. I've never had good luck with tape backups, yes they backup, but
> whenever I really need a file, it can't be retrieved.

I use the -B flag to insure the archives are just under 2GB. This
generates multiple volumes by appending a sequence number if necessary.

For example, on a /home dump of >2GB, the commands

ddate=`date +%m%d%y-%H%M%S`
dump -0uM -b 32 -B 2097142 -f /mnt/home.$ddate.L0.dump -L "abit:/home"
/home

generate

/mnt/home.092801-130439.L0.dump001
/mnt/home.092801-130439.L0.dump002

each guaranteed to be 10K under 2GB. Fixes potential portability issues
also.

rgds,
tim.

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