Rick, Does this still fail with 2.10.1 or a later client? It may just be a bug in "lfs" or the client, not an interop problem per-se. If it doesn't fail with a newer client then it probably isn't worthwhile to track down.
If you _really_ need to get this working with the 2.10.0 client you could try the "lfs" binary (and possibly liblustreapi.so) from a newer client. Otherwise, upgrading the kernel modules to 2.10.0+patch is not much different than upgrading to 2.10.6 or 2.10.7 to fix this problem. Cheers, Andreas On Apr 22, 2019, at 15:15, Mohr Jr, Richard Frank <[email protected]> wrote: > > > I was trying to play around with some PFL layout today, and I ran into an > issue. I have a file system running Lustre 2.10.6 and a client with 2.10.0 > installed. I created a PFL with this command: > > [rfmohr@sip-login1 rfmohr]$ lfs setstripe -E 4M -c 2 -E 100M -c 4 comp_file > > It did not return any errors, so I tried to query the layout: > > [rfmohr@sip-login1 rfmohr]$ lfs getstripe comp_file > comp_file has no stripe info > > And if I write any data to it, I end up with a file that uses the system’s > default stripe count: > > [rfmohr@sip-login1 rfmohr]$ dd if=/dev/zero of=comp_file bs=1M count=50 > 50+0 records in > 50+0 records out > 52428800 bytes (52 MB) copied, 0.0825892 s, 635 MB/s > > [rfmohr@sip-login1 rfmohr]$ lfs getstripe comp_file > comp_file > lmm_stripe_count: 1 > lmm_stripe_size: 1048576 > lmm_pattern: 1 > lmm_layout_gen: 0 > lmm_stripe_offset: 3 > obdidx objid objid group > 3 265665 0x40dc1 0 > > I could not find a JIRA ticket that looked similar to this. Is this a known > bug? Or some odd interop issue? When I tried the command on another file > system that uses 2.10.3 on the servers and clients, I got the expected > behavior: > > -bash-4.2$ lfs setstripe -E 4M -c 2 -E 64M -c 4 comp_file > > -bash-4.2$ lfs getstripe comp_file > comp_file > lcm_layout_gen: 2 > lcm_entry_count: 2 > lcme_id: 1 > lcme_flags: init > lcme_extent.e_start: 0 > lcme_extent.e_end: 4194304 > lmm_stripe_count: 2 > lmm_stripe_size: 1048576 > lmm_pattern: 1 > lmm_layout_gen: 0 > lmm_stripe_offset: 6 > lmm_objects: > - 0: { l_ost_idx: 6, l_fid: [0x100060000:0x8f84d:0x0] } > - 1: { l_ost_idx: 7, l_fid: [0x100070000:0x8f72d:0x0] } > > lcme_id: 2 > lcme_flags: 0 > lcme_extent.e_start: 4194304 > lcme_extent.e_end: 67108864 > lmm_stripe_count: 4 > lmm_stripe_size: 1048576 > lmm_pattern: 1 > lmm_layout_gen: 65535 > lmm_stripe_offset: -1 > > -- > Rick Mohr > Senior HPC System Administrator > National Institute for Computational Sciences > http://www.nics.tennessee.edu > > _______________________________________________ > lustre-discuss mailing list > [email protected] > http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org _______________________________________________ lustre-discuss mailing list [email protected] http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
