<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40"> <head> <meta http-equiv=Content-Type content="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 11 (filtered medium)">  <style>  </style> </head> <body lang=EN-US link=blue vlink=blue> <div class=Section1> Hello Peter,<o:p></o:p> <o:p> </o:p> According to centos.org, you should be able to create a partition that size: <a href="http://www.centos.org/product.html">http://www.centos.org/product.html</a>. RedHat had an ext3 filesystem limit of 2TB until RHEL4. I know you want to make the space usable, but do you really need a single filesystem that is that large? Generally, you don’t see filesystems larger then 2TB without using a special filesystem that will scale across multiple partitions and you have a specific need you are solving. Just remember that if you create that large of a filesystem and it gets corrupt, all of that data is lost. There is also a greater consideration for backup and restore. If you have smaller partitions and one partitions backup job fails, you still have the others. If possible, you may want to consider creating smaller filesystems and mount them where you need the space.<o:p></o:p> <o:p> </o:p> Regards,<o:p></o:p> Joseph<o:p></o:p> <o:p> </o:p> <div> <div class=MsoNormal align=center style='text-align:center'> <hr size=2 width="100%" align=center tabindex=-1> </div> From: redhat-sysadmin-list-bounces@redhat.com [mailto:redhat-sysadmin-list-bounces@redhat.com] On Behalf Of Vinod Kumar Sent: Monday, February 11, 2008 8:37 PM To: redhat-sysadmin-list@redhat.com Subject: Re: Disk partitions and LVM limits<o:p></o:p> </div> <o:p> </o:p> <div> Hi Peter,<o:p></o:p> </div> <div> <o:p></o:p> </div> <div> You can use parted (or gparted) to create partitions greater than 2TB. <o:p></o:p> </div> <div> <o:p></o:p> </div> <div> Regards,<o:p></o:p> </div> <div> Vinod <o:p></o:p> </div> <div> On 2/12/08, Jonathan Klay <<a href="mailto:Jonathan.Klay@noaa.gov">Jonathan.Klay@noaa.gov</a>> wrote: <o:p></o:p> I found this a bit difficult, but look at Redhat knowledge base article 11461. Seems you have to guess at the max size, as it doesn't tell you what it is (it will be something less than 5.4TB!), so I created and removed as I zeroed in on it best I could. Peter Blajev wrote: > Date: Fri, 8 Feb 2008 11:01:21 -0800 > From: Peter Blajev <<a href="mailto:pblajev@ucsd.edu">pblajev@ucsd.edu</a>> > Subject: Disk partitions and LVM limits > To: <a href="mailto:redhat-sysadmin-list@redhat.com">redhat-sysadmin-list@redhat.com</a> > Message-ID: <<a href="mailto:200802081101.21774.pblajev@ucsd.edu">200802081101.21774.pblajev@ucsd.edu</a>> > Content-Type: text/plain; charset="us-ascii" > > Hi, > > I've got a DAS DELL MD1000 with a bunch of SATA drives in RAID 5 configuration > with total space of 5.4TB. This box is attached to a CentOS5 system (kernel > 2.6.18-53.1.6.el5). > > Any idea how to make this space usable? > Is there a limit how big a partition can be? What is the work around? > Is there a limit how big a file system ca be? > > I've tried to partition it but no matter how bug partition I create fdisk > spits out these messages on the console: > --- > sdb: very big device. try to use READ CAPACITY(16). > SCSI device sdb: 10248519680 512-byte hdwr sectors (5247242 MB) > sdb: Write Protect is off > --- > > I decided to not partition the drive and use LVM but the physical volume > stopped at 2TB. > > So, right now I can't use LVM because of this 2TB limit and I'm not sure if I > partition the drive how good these partitions are because of the the message > from fdisk. > > Any help or idea is highly appreciated. > > Thank you > Peter > > > > ------------------------------ > > -- > redhat-sysadmin-list mailing list > <a href="mailto:redhat-sysadmin-list@redhat.com">redhat-sysadmin-list@redhat.com</a> > <a href="https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list">https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list</a> > > End of redhat-sysadmin-list Digest, Vol 37, Issue 1 > *************************************************** > -- Jonathan Klay <+> System Administrator -- redhat-sysadmin-list mailing list <a href="mailto:redhat-sysadmin-list@redhat.com">redhat-sysadmin-list@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list">https://www.redhat.com/mailman/listinfo/redhat-sysadmin-list</a><o:p></o:p> </div> <o:p> </o:p> </div> </body> </html>