Re: [gpfsug-discuss] afmRefreshAsync questions

After further investigaion, it seems like this XDS software is using memory mapped io when operating on the files. Is it possible that MMAP IO has a higher performance hit by AFM than regular file access? /Andreas [X] Andreas Mattsson Systems

Re: [gpfsug-discuss] afmRefreshAsync questions

3.doc/bl1adm_configurationparametersAFM.htm The software is XDS, http://xds.mpimf-heidelberg.mpg.de/ Unfortunately it is a closed source software, so it is not possible to adapt the software. Regards, Andreas Mattsson [X] Andreas Mattsson Systems Engineer

[gpfsug-discuss] afmRefreshAsync questions

still have any effect in this setup? Regards, Andreas Mattsson [X] Andreas Mattsson Systems Engineer MAX IV Laboratory Lund University P.O. Box 118, SE-221 00 Lund, Sweden Visiting address: Fotongatan 2, 224 84 Lund Mobile: +46 706 64

[gpfsug-discuss] Inode reuse on AFM cache eviction

s, or if I need the same inode space as for the total amount of files that will reside in the home of the cache. Regards, Andreas Mattsson [X] Andreas Mattsson Systems Engineer MAX IV Laboratory Lund University P.O. Box 118, SE-221 00 Lund, S

Re: [gpfsug-discuss] Filesystem access issues via CES NFS

Also, as far as I can see, it looks like Scale 5.0.2.2 includes these packages already. Regards, Andreas mattsson [X] Andreas Mattsson Systems Engineer MAX IV Laboratory Lund University P.O. Box 118, SE-221 00 Lund, Sweden Visiting ad

Re: [gpfsug-discuss] Filesystem access issues via CES NFS

tem. Will see if I can get a tcpdump of the issue. Regards, Andreas _ Andreas Mattsson Systems Engineer MAX IV Laboratory Lund University P.O. Box 118, SE-221 00 Lund, Sweden Visiting address: Fotongatan 2, 224 84 Lund Mobile: +46 706 64

[gpfsug-discuss] Filesystem access issues via CES NFS

0.1.1. GPFS clients run Scale 5.0.1.1, and NFS clients run CentOS 7.5. Regards, Andreas Mattsson _____ Andreas Mattsson Systems Engineer MAX IV Laboratory Lund University P.O. Box 118, SE-221 00 Lund, Sweden Visiting address: Fotongatan 2, 224 84

Re: [gpfsug-discuss] Infiniband connection rejected, ibv_create_qp err 13

specification of ibv_create_qp error 13? I must have been looking in all the wrong places, because I’ve been unable to find the meaning of this error. Regards, Andreas _ [cid:part1.08040705.03090509@maxiv.lu.se] Andreas Mattsson Systems Engineer MAX IV

[gpfsug-discuss] Infiniband connection rejected, ibv_create_qp err 13

d a solution to this. Any help or suggestions is appreciated. Regards, Andreas Mattsson _ [cid:part1.08040705.03090509@maxiv.lu.se] Andreas Mattsson Systems Engineer MAX IV Laboratory Lund University P.O. Box 118, SE-221 00 Lund, Sweden Visiting addres

Re: [gpfsug-discuss] Strange timestamp behaviour on NFS via CES

;ik=b0a6f02971&view=att&th=14618fab2daf0e10&attid=0.1.1&disp=emb&zw&atsh=1]<https://www.maxlab.lu.se> Andreas Mattsson System Engineer MAX IV Laboratory Lund University Tel: +46-706-649544 E-mail: andreas.matts...@maxlab.lu.se<mailto:andreas.matts...@maxlab.lu.se>

Re: [gpfsug-discuss] Strange timestamp behaviour on NFS via CES

ther file (like, 'touch -r file02 file03’)? -- Stephen On Feb 3, 2017, at 7:46 AM, Andreas Mattsson mailto:andreas.matts...@maxiv.lu.se>> wrote: I’m having some really strange timestamp behaviour when doing file operations on NFS mounts shared via CES on spectrum scale 4.2.1.1 The

[gpfsug-discuss] Strange timestamp behaviour on NFS via CES

Copying the file via a native gpfs-mount or via SMB gives a correct timestamp. Doing the same operation over NFS to other NFS-servers works correct, it is only when operating on the NFS-share from the Spectrum Scale CES the issue occurs. Have anyone seen this