On Mon, Dec 15, 2008 at 02:27:57PM -0500, Jeffrey J. Kosowsky wrote:
> John Rouillard wrote at about 16:55:04 +0000 on Monday, December 15, 2008:
>  > On Mon, Dec 15, 2008 at 12:35:38PM +0100, Holger Parplies wrote:
>  > > Hi,
>  > > 
>  > > Andreas Micklei wrote on 2008-12-15 10:13:38 +0100 [Re:
>  > [BackupPC-users]
>  > > Backing up the backup to an external USB drive]:
>  > > > Am Freitag, 12. Dezember 2008 schrieb Rich Rauenzahn:
>  > > > > Some of you running dd might want to consider "dump"
>  > > > > [...]
>  > > > 
>  > > > I have been doing that for about two years now. Works great!
>  > > 
>  > > I've been meaning to ask/point this out for some time now. Has
>  > > anyone actually tried *restoring* a dump of a *reasonably
>  > > sized* pool? The reason I'm asking is that as far as I
>  > > understand the man page, restore runs completely in user space,
>  > > so it is faced with the same problem as cp/rsync/tar - the need
>  > > to keep an inode-to-path-name mapping for correctly re-creating
>  > > hardlinks. It is possible that restore can handle this problem,
>  > > but I wouldn't take it for granted without testing.
>  > 
>  > I have and it didn't work using the dump from centos on a 401 GB
>  > filesystem. Errored on a "File too large".
>  > 
> OUCH!
> That would hurt in a real recovery situation.
> Is there any solution? (or warning when you are making the dump at least)

Nope and nope. I was cloning a BackupPC filesystem, so I went with
copy the cpool and use BackupPC_tarPCCopy and stop backups for a
couple of days while doing so.

-- 
                                -- rouilj

John Rouillard
System Administrator
Renesys Corporation
603-244-9084 (cell)
603-643-9300 x 111

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