[Box Backup] bbstoreaccounts info output

[Ben Summers]

On 29 Oct 2004, at 16:08, Dennis Speekenbrink wrote:

> Hi,
>
> boxbackup seems to be running fine on 2 of my Gentoo Linux systems.
> Toying around a little I'm left with 2 questions:
>
> A:  why does the output of bbstoreaccounts info differ with the space 
> on disk?
> (agreed, not much in MB, but still)
>
> > bbstoreaccounts info 1001
> Account ID: 00001001
> Last object ID: 19741
> Blocks used: 148054 (289.17Mb)
> Blocks used by old files: 119 (0.23Mb)
> Blocks used by deleted files: 8 (0.02Mb)
> Blocks used by directories: 1298 (2.54Mb)
> Block soft limit: 972800 (1900.00Mb)
> Block hard limit: 1048576 (2048.00Mb)
> Client store marker: 1098980121000000
>
> > du -hs /boxstores/backup/000010001/
> 324M    /boxstores/backup/00001001/
> (this is the size in MB as reported by the filesystem)
>
> >du -s
> 331408  /boxstores/backup/00001001/
> (the size in blocks as reported by the filesystem)

Those two values match up to within expected tolerances. I assume du -s 
is reporting in 1k blocks, not necessarily the filesystem block size.

>
> I set the block size to 2048 in the raid config file like the example 
> as I couldn't figure out the actual block size of my filesystem.  That 
> would explain either the size in blocks, or the size in MB difference 
> but not both.
> Do I need to change the blocksize to get correct accounting (i.o.w. 
> correct handling of soft and hard limits)?  It seems to be working ok 
> as it is.

It's best, but not essential, to get the right block size. Things will 
be OK, if a little off on the accounting and not quite as efficient as 
it could be. (It may be a few % out, unless you have lots of very small 
files.)

However, if you're not using the software RAID, it doesn't matter what 
you set the block size to.

>
>
> B: what does the 'client store marker' mean in the output of 
> bbstoreaccounts?

The client sets a marker to check that something else hasn't modified 
the account while it wasn't looking. Treat it as an opaque value. 
There's no useful information there.

Ben