[Lustre-discuss] Lustre User Group 2009―Ple ase submit your presentation abstract by Feb 23
*LUG09 - Seventh Annual Lustre User Group Meeting* *April 16-17, 2009* *The Lodge at Golden Gate* *Sausalito, California* Sun Microsystems welcomes you to the Lustre User Group, the premier event for learning new technical information, acquiring best practices, and sharing knowledge about Lustre technology. LUG09 is a once-a-year opportunity for users to get answers, advice, and suggestions regarding their specific Lustre implementations. Attendees will have access to experts and peers who will share their real-world experiences. With updates on the community development project, Birds of a Feather sessions, demos, and tutorials, LUG09 is the perfect opportunity to meet with the Lustre development team and discuss upcoming enhancements and capabilities. *Call for Presentations* You are invited to submit an abstract to be considered for presentation. This is your opportunity to help the Lustre community by sharing your knowledge and lessons learned from Lustre deployments. Please submit your presentation abstract to lug2...@sun.com mailto:lug2...@sun.com by *Feb 23, 2009*. *Lustre Advanced User Seminar * Lustre Advanced User Seminar will be offered on *April 15* before the User Group meeting. This seminar is designed for senior systems administrators, engineers and integrators needing more comprehensive knowledge of Lustre Administration and Troubleshooting techniques. Prior completion of Lustre Administration and Support Level 1 (ES-288) and/or prior experience administrating Lustre is strongly recommended in order to receive maximum value from this seminar. Space will be limited and registration fee discounts will be offered for LUG attendees. Links to the LUG09 Registration Site will be posted soon at Lustre.org http://lustre.org/, so stay tuned for further announcements. If you have any questions or interest about LUG09, please contact us at lug2...@sun.com mailto:lug2...@sun.com See you at LUG09! ___ Lustre-discuss mailing list Lustre-discuss@lists.lustre.org http://lists.lustre.org/mailman/listinfo/lustre-discuss
Re: [Lustre-discuss] e2fsck
On Feb 19, 2009 20:42 -0500, Robin Humble wrote: in 5 out of 6 e2fsck's I do after an OSS crash, I get one free blocks count wrong and often a bitmap in a group that wants to be corrected. is this normal? or is it an ldiskfs or an e2fsck bug? Do you have the MMP feature enabled? rhel5 x86_64 e2fsprogs-1.40.11.sun1-0redhat kernel-lustre-smp-2.6.18-92.1.10.el5_lustre.1.6.6 cheers, robin [r...@sox2 ~]# e2fsck -f /dev/md5 e2fsck 1.40.11.sun1 (17-June-2008) Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Block bitmap differences: -107639 Fixy? yes Free blocks count wrong for group #3 (19179, counted=19180). Fixy? yes Free blocks count wrong (8199819, counted=8199820). Fixy? yes system-OST0001: * FILE SYSTEM WAS MODIFIED * system-OST0001: 133986/3055616 files (1.2% non-contiguous), 4007188/12207008 blocks [r...@sox2 ~]# e2fsck -f /dev/md6 e2fsck 1.40.11.sun1 (17-June-2008) home-OST0001: recovering journal Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Free blocks count wrong for group #3 (23432, counted=23433). Fixy? yes Free blocks count wrong (131098913, counted=131098914). Fixy? yes home-OST0001: * FILE SYSTEM WAS MODIFIED * home-OST0001: 26848/33513472 files (2.4% non-contiguous), 2934270/134033184 blocks [r...@sox2 ~]# e2fsck -f /dev/md7 e2fsck 1.40.11.sun1 (17-June-2008) apps-OST0001: recovering journal Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Free blocks count wrong for group #3 (23432, counted=23433). Fixy? yes Free blocks count wrong (34865220, counted=34865221). Fixy? yes apps-OST0001: * FILE SYSTEM WAS MODIFIED * apps-OST0001: 45904/9166848 files (3.9% non-contiguous), 1794027/36659248 blocks [r...@sox2 ~]# [r...@sox2 ~]# e2fsck -f /dev/md15 e2fsck 1.40.11.sun1 (17-June-2008) system-OST: recovering journal Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Free blocks count wrong for group #3 (20647, counted=20648). Fixy? yes Free blocks count wrong (8115827, counted=8115828). Fixy? yes system-OST: * FILE SYSTEM WAS MODIFIED * system-OST: 134002/3055616 files (1.2% non-contiguous), 4091180/12207008 blocks [r...@sox2 ~]# e2fsck -f /dev/md16 e2fsck 1.40.11.sun1 (17-June-2008) home-OST: recovering journal Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information home-OST: * FILE SYSTEM WAS MODIFIED * home-OST: 26831/33513472 files (2.1% non-contiguous), 2951394/134033184 blocks [r...@sox2 ~]# e2fsck -f /dev/md17 e2fsck 1.40.11.sun1 (17-June-2008) apps-OST: recovering journal Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Free blocks count wrong for group #3 (3046, counted=3047). Fixy? yes Free blocks count wrong (34976431, counted=34976432). Fixy? yes apps-OST: * FILE SYSTEM WAS MODIFIED * apps-OST: 45798/9166848 files (3.7% non-contiguous), 1682816/36659248 blocks ___ Lustre-discuss mailing list Lustre-discuss@lists.lustre.org http://lists.lustre.org/mailman/listinfo/lustre-discuss Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc. ___ Lustre-discuss mailing list Lustre-discuss@lists.lustre.org http://lists.lustre.org/mailman/listinfo/lustre-discuss
Re: [Lustre-discuss] e2fsck
On Fri, Feb 20, 2009 at 02:10:50PM -0700, Andreas Dilger wrote: On Feb 19, 2009 20:42 -0500, Robin Humble wrote: in 5 out of 6 e2fsck's I do after an OSS crash, I get one free blocks count wrong and often a bitmap in a group that wants to be corrected. is this normal? or is it an ldiskfs or an e2fsck bug? Do you have the MMP feature enabled? no, MMP is off. there is a small chance that this is the first time the partitions have been fsck'd since MMP was turned off though - I can't be sure about that. we have MMP off because when e2fsck or tune2fs crashes (eg. out of memory, or when tune2fs goes recursively looking for journal devices that don't exist) then it makes the MMP'd partition unusable. cheers, robin rhel5 x86_64 e2fsprogs-1.40.11.sun1-0redhat kernel-lustre-smp-2.6.18-92.1.10.el5_lustre.1.6.6 cheers, robin [r...@sox2 ~]# e2fsck -f /dev/md5 e2fsck 1.40.11.sun1 (17-June-2008) Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Block bitmap differences: -107639 Fixy? yes Free blocks count wrong for group #3 (19179, counted=19180). Fixy? yes Free blocks count wrong (8199819, counted=8199820). Fixy? yes system-OST0001: * FILE SYSTEM WAS MODIFIED * system-OST0001: 133986/3055616 files (1.2% non-contiguous), 4007188/12207008 blocks [r...@sox2 ~]# e2fsck -f /dev/md6 e2fsck 1.40.11.sun1 (17-June-2008) home-OST0001: recovering journal Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Free blocks count wrong for group #3 (23432, counted=23433). Fixy? yes Free blocks count wrong (131098913, counted=131098914). Fixy? yes home-OST0001: * FILE SYSTEM WAS MODIFIED * home-OST0001: 26848/33513472 files (2.4% non-contiguous), 2934270/134033184 blocks [r...@sox2 ~]# e2fsck -f /dev/md7 e2fsck 1.40.11.sun1 (17-June-2008) apps-OST0001: recovering journal Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Free blocks count wrong for group #3 (23432, counted=23433). Fixy? yes Free blocks count wrong (34865220, counted=34865221). Fixy? yes apps-OST0001: * FILE SYSTEM WAS MODIFIED * apps-OST0001: 45904/9166848 files (3.9% non-contiguous), 1794027/36659248 blocks [r...@sox2 ~]# [r...@sox2 ~]# e2fsck -f /dev/md15 e2fsck 1.40.11.sun1 (17-June-2008) system-OST: recovering journal Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Free blocks count wrong for group #3 (20647, counted=20648). Fixy? yes Free blocks count wrong (8115827, counted=8115828). Fixy? yes system-OST: * FILE SYSTEM WAS MODIFIED * system-OST: 134002/3055616 files (1.2% non-contiguous), 4091180/12207008 blocks [r...@sox2 ~]# e2fsck -f /dev/md16 e2fsck 1.40.11.sun1 (17-June-2008) home-OST: recovering journal Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information home-OST: * FILE SYSTEM WAS MODIFIED * home-OST: 26831/33513472 files (2.1% non-contiguous), 2951394/134033184 blocks [r...@sox2 ~]# e2fsck -f /dev/md17 e2fsck 1.40.11.sun1 (17-June-2008) apps-OST: recovering journal Pass 1: Checking inodes, blocks, and sizes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information Free blocks count wrong for group #3 (3046, counted=3047). Fixy? yes Free blocks count wrong (34976431, counted=34976432). Fixy? yes apps-OST: * FILE SYSTEM WAS MODIFIED * apps-OST: 45798/9166848 files (3.7% non-contiguous), 1682816/36659248 blocks ___ Lustre-discuss mailing list Lustre-discuss@lists.lustre.org http://lists.lustre.org/mailman/listinfo/lustre-discuss Cheers, Andreas -- Andreas Dilger Sr. Staff Engineer, Lustre Group Sun Microsystems of Canada, Inc. ___ Lustre-discuss mailing list Lustre-discuss@lists.lustre.org http://lists.lustre.org/mailman/listinfo/lustre-discuss
