Re: [lustre-discuss] State of arm client?

2019-04-24 Thread Peter Jones
Andrew You will need to use 2.12.x (and 2.12.1 is in final release testing so would be a good bet if you can wait a short while) Peter From: lustre-discuss on behalf of Andrew Elwell Date: Wednesday, April 24, 2019 at 7:31 PM To: "lustre-discuss@lists.lustre.org" Subject: [lustre-discuss]

[lustre-discuss] State of arm client?

2019-04-24 Thread Andrew Elwell
Hi folks, I remember seeing a press release by DDN/Whamcloud last November that they were going to support ARM, but can anyone point me to the current state of client? I'd like to deploy it onto a raspberry pi cluster (only 4-5 nodes) ideally on raspbian for demo / training purposes. (Yes I know

Re: [lustre-discuss] Lustre client memory and MemoryAvailable

2019-04-24 Thread NeilBrown
Hi, you seem to be able to reproduce this fairly easily. If so, could you please boot with the "slub_nomerge" kernel parameter and then reproduce the (apparent) memory leak. I'm hoping that this will show some other slab that is actually using the memory - a slab with very similar

Re: [lustre-discuss] Lustre client memory and MemoryAvailable

2019-04-24 Thread Nathan Dauchy - NOAA Affiliate
On Mon, Apr 15, 2019 at 9:18 PM Jacek Tomaka wrote: > > >signal_cache should have one entry for each process (or thread-group). > > That is what i thought as well, looking at the kernel source, allocations > from > signal_cache happen only during fork. > > I was recently chasing an issue with

[lustre-discuss] stat

2019-04-24 Thread Harms, Kevin
Does Lustre provide an optimized stat("filename", ...) that requires fewer RPCs than fd=open("filename", ...); stat(fd); ? If so, are there any descriptions of this optimization? thanks, kevin ___ lustre-discuss mailing list

[lustre-discuss] 2.10 <-> 2.12 interoperability?

2019-04-24 Thread Thomas Roth
Hi all, OS=CentOS 7.5 Lustre 2.10.6 One of the OSS (one OST only) was upgraded to zfs 0.7.13, and LU-11507 forced an upgrade of Lustre to 2.12 Mounts, reconnects, recovers, but then is unusable, and the MDS reports: Lustre: 13650:0:(mdt_handler.c:5350:mdt_connect_internal()) test-MDT: