please help me

please help me

[rajkumar]

Dear Sir,

i have scientific linux 4.7 server with kernel 2.6.9.-78.ELsmp and 
installed the xfs rpms for supporting xfs filesystem.Now created  a 
volume of 300TB plz tell me how to format.please give commands how to 
format 300TB using xfs filesystem.

thanks&regards,
rajkumar.
tech support engineer.


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Re: please help me

[Emmanuel Florac]

Le Mon, 21 Dec 2009 14:45:49 +0530
rajkumar <rajkumar@storageindia.com> écrivait:

> i have scientific linux 4.7 server with kernel 2.6.9.-78.ELsmp and 
> installed the xfs rpms for supporting xfs filesystem.Now created  a 
> volume of 300TB plz tell me how to format.please give commands how to 
> format 300TB using xfs filesystem.

Are you running a 64 bits kernel? A 32 bits kernel won't be able to use
a filesystem bigger than 16 TB.

You need to install the xfs-progs too, to have mkfs.xfs.

To format a 300TB xfs, basically just do

mkfs.xfs /dev/whatever

However you'd better configure your filesystem to match the underlying
device. You must be using some sort of RAID array; you should do it
this way:

mkfs.xfs -d su=<value>,sw=<numberofdataDisks> /dev/whatever

Where <value> is the RAID array stripe size (in bytes, or append a k or
m accordingly) and <sw> the number of data disks (removing parity and
spare drives from the total).

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