Re: Newbie question about xfs_db with the response message "unexpected XFS SB magic number 0x2e524d46"

[Hxsrmeng <hxsrmeng@gmail.com>]

Thanks. 
But what should I do to " look at it while it's mounted,though (IIRC)"?
Only thing I know is that I have to umount xfs_disk to use xfs_db. But at
this time, I can not see files in my xfs_disk.

Actually, I'd like to know where exactly myfile is located in xfs_disk.


Eric Sandeen-3 wrote:
> 
> Hxsrmeng wrote:
>> OpenSUSE10.2. and 2.6.22-rc7-default XFS
>> 1)
>> I'd like to run "xfs_db -f -c "sb 0" -c "p" ./myfile | egrep
>> 'agcount|inopblog|agblklog'" to see the three values.
> 
> if "myfile" is a file on your xfs filesystem, then that's not right.
> xfs_db needs to be pointed at a block device (or filesystem image file)
> containing an xfs filesystem.  You can look at it while it's mounted,
> though (IIRC) the information may not be perfectly in sync with the fs's
> data.
> 
> agcount, inopblog, etc are parameters of an xfs filesystem, not a file
> on that filesystem.
> 
> What are you trying to learn (about your file or filesystem?)
> 
> -Eric
> 
> 
> 
> 

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