[lustre-discuss] changing inode size on MDT

Colin Faber cfaber at gmail.com
Wed Oct 2 13:00:41 PDT 2019


Hi Micheal,

With 1K inodes you won't have space to accommodate new features, IIRC the
current minimal limit on modern lustre is 2K now. If you're running out of
MDT space you might consider DNE and multiple MDT's to accommodate that
larger name space.

-cf


On Wed, Oct 2, 2019 at 1:54 PM Hebenstreit, Michael <
michael.hebenstreit at intel.com> wrote:

> http://wiki.lustre.org/Lustre_Tuning#Number_of_Inodes_for_MDS
>
> and I'd like to use --mkfsoptions='-i 1024' to have more inodes in the
> MDT. We already run out of inodes on that FS (probably due to an ZFS bug in
> early IEEL version) - so I'd like to increase #inodes if possible
>
>
> -----Original Message-----
> From: Mohr Jr, Richard Frank <rmohr at utk.edu>
> Sent: Wednesday, October 02, 2019 13:39
> To: Hebenstreit, Michael <michael.hebenstreit at intel.com>
> Cc: lustre-discuss at lists.lustre.org
> Subject: Re: [lustre-discuss] changing inode size on MDT
>
>
>
> > On Oct 2, 2019, at 1:08 PM, Hebenstreit, Michael <
> michael.hebenstreit at intel.com> wrote:
> >
> > Could anyone point out to me what the downside of having an inode size
> of 1k on the MDT would be (compared to the 4k default)?
>
> Are you talking about the inode size, or the “-i” option to mkfs.lustre
> (which actually controls the ratio of inodes to free space)?
>
> —Rick
>
> _______________________________________________
> lustre-discuss mailing list
> lustre-discuss at lists.lustre.org
> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.lustre.org/pipermail/lustre-discuss-lustre.org/attachments/20191002/da1c3ade/attachment.html>


More information about the lustre-discuss mailing list