Hi ; Is there a 2 TB limitation for max OST size ? Regards Mertol <http://www.sun.com/> http://www.sun.com/emrkt/sigs/6g_top.gif Mertol Ozyoney Storage Practice - Sales Manager Sun Microsystems, TR Istanbul TR Phone +902123352200 Mobile +905339310752 Fax +902123352222 Email <mailto:Ayca.Yalcin at Sun.COM> mertol.ozyoney at Sun.COM -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.lustre.org/pipermail/lustre-discuss/attachments/20080613/8c92219f/attachment.html -------------- next part -------------- A non-text attachment was scrubbed... Name: image001.gif Type: image/gif Size: 1257 bytes Desc: not available Url : http://lists.lustre.org/pipermail/lustre-discuss/attachments/20080613/8c92219f/attachment.gif
> > Is there a 2 TB limitation for max OST size ? >No. I believe its 8TB now. (I run with 6.7TB) /Jakob
On Jun 13, 2008 00:16 +0300, Mertol Ozyoney wrote:> > Is there a 2 TB limitation for max OST size ?Please see the Lustre manual Chapter 33 "System Limits" http://manual.lustre.org/manual/LustreManual16_HTML/SystemLimits.html#50446410_pgfId-5529 Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc.
2008/6/13 Andreas Dilger <adilger at sun.com>:> On Jun 13, 2008 00:16 +0300, Mertol Ozyoney wrote: >> >> Is there a 2 TB limitation for max OST size ? >Allthough in some cases the partition table of the device could be of fat/vfat which can''t handle larger partitions than 2TB. I currently run gpt partition table from parted and 7.33TB partitions. Regards, Timh -- Timh Bergstr?m System Administrator Diino AB - www.diino.com :wq
On Jun 13, 2008 06:40 +0200, Timh Bergstr?m wrote:> 2008/6/13 Andreas Dilger <adilger at sun.com>: > > On Jun 13, 2008 00:16 +0300, Mertol Ozyoney wrote: > >> > >> Is there a 2 TB limitation for max OST size ? > > Allthough in some cases the partition table of the device could be of > fat/vfat which can''t handle larger partitions than 2TB. I currently > run gpt partition table from parted and 7.33TB partitions.We recommend not using an partition table at all. There is no requirement for a partition table required for ext3/ldiskfs. Having a partition table can also have negative performance impact for filesystems on RAID devices. Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc.
2008/6/13 Andreas Dilger <adilger at sun.com>:> On Jun 13, 2008 06:40 +0200, Timh Bergstr?m wrote: >> 2008/6/13 Andreas Dilger <adilger at sun.com>: >> > On Jun 13, 2008 00:16 +0300, Mertol Ozyoney wrote: >> >> >> >> Is there a 2 TB limitation for max OST size ? >> >> Allthough in some cases the partition table of the device could be of >> fat/vfat which can''t handle larger partitions than 2TB. I currently >> run gpt partition table from parted and 7.33TB partitions. > > We recommend not using an partition table at all. There is no requirement > for a partition table required for ext3/ldiskfs. Having a partition table > can also have negative performance impact for filesystems on RAID devices. >So you can tell mkfs.lustre to use a device (22TB /dev/sda in this case) and split is at it sees fit? How do I do that? //T> Cheers, Andreas > -- > Andreas Dilger > Sr. Staff Engineer, Lustre Group > Sun Microsystems of Canada, Inc. > >-- Timh Bergstr?m System Administrator Diino AB - www.diino.com :wq