Hi Francisco,
Just to make sure. You are aware that it will only work for new
files/dirs under "/folder_name/"? Also, only small files or the first
part of a large file (<32M) will get a performance benefit.
Cheers,
Hans Henrik
On 30.09.2022 14.16, Cloete, F. (Francois) via lustre-discuss wrote:
Good day Lustre Community.
Would appreciate any guidance regarding best practices on the below
DOM Lustre config in our environment.
We have applied DOM on our Application file-systems thinking that this
would give us a performance benefit in our environment.
We have not noticed any significant performance benefit after applying
these changes.
Below is the setstripe command used for the folders mentioned above.
/lfs setstripe -E 32M -L mdt -E -1 -S 4M folder_name/
//
/Below are the versions we are using./
/[root@server1 ~]# rpm -qa|grep -i lustre/
/kmod-lustre-osd-ldiskfs-2.12.8_6_g5457c37-1.el7.x86_64/
/kernel-3.10.0-1160.49.1.el7_lustre.x86_64/
/kernel-headers-3.10.0-1160.49.1.el7_lustre.x86_64/
/lustre-tests-2.12.8_6_g5457c37-1.el7.x86_64/
/lustre-osd-ldiskfs-mount-2.12.8_6_g5457c37-1.el7.x86_64/
/lustre-iokit-2.12.8_6_g5457c37-1.el7.x86_64/
/lustre-resource-agents-2.12.8_6_g5457c37-1.el7.x86_64/
/kmod-lustre-2.12.8_6_g5457c37-1.el7.x86_64/
/kmod-lustre-tests-2.12.8_6_g5457c37-1.el7.x86_64/
/lustre-2.12.8_6_g5457c37-1.el7.x86_64/
//
//
/[root@server ~]# cat /etc/*release*/
/NAME="Red Hat Enterprise Linux Server"/
/VERSION="7.9 (Maipo)"/
/ID="rhel"/
/ID_LIKE="fedora"/
/VARIANT="Server"/
/VARIANT_ID="server"/
/VERSION_ID="7.9"/
/PRETTY_NAME="Red Hat Enterprise Linux"/
/ANSI_COLOR="0;31"/
/CPE_NAME="cpe:/o:redhat:enterprise_linux:7.9:GA:server"/
/HOME_URL=https://www.redhat.com//
/BUG_REPORT_URL=https://bugzilla.redhat.com//
//
/REDHAT_BUGZILLA_PRODUCT="Red Hat Enterprise Linux 7"/
/REDHAT_BUGZILLA_PRODUCT_VERSION=7.9/
/REDHAT_SUPPORT_PRODUCT="Red Hat Enterprise Linux"/
/REDHAT_SUPPORT_PRODUCT_VERSION="7.9"/
/Red Hat Enterprise Linux Server release 7.9 (Maipo)/
/Red Hat Enterprise Linux Server release 7.9 (Maipo)/
/cpe:/o:redhat:enterprise_linux:7.9:ga:server/
//
/We are using ldiskfs on rhel7.9 VM’s in azure./
Thanks
Francois
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