Shohei, you can add additional servers, see this in the manual: https://docs.daos.io/admin/pool_operations/#pool-extension kevin ________________________________________ Sent: Saturday, August

Hello DAOS developers and users I am trying to start a DAOS server with real SCM and NVme Devices. After formating the storage device,the server complain "instance 0 exited: failed to start system db:

DAOS uses two-phase commit to ensure consistency between replicas. According to "src/vos/readme.md", read requests can be sent to any replica, but if this replica server has a network partition（the

Hi, I have a question about expanding the size of existing pools online in DAOS v1.2? Is there any way to do it? Thank you, --- Shohei

Hi Eeheet, You can use the fio DAOS engine (https://daos-stack.github.io/devbranch/admin/performance_tuning/#fio). If you want to stick to dfuse, then I would advise to use the posixaio engine

Hi, The DFS layer does not track openers, so the other client will be able to proceed and delete the file. The original opener will thus suddenly see an empty file. Please note that if the two

Hi, I’m an intern on the HPC team, and I’m trying to increase the performance of FIO on my server (wolf-169), admin/client (wolf-57). I attached a screencap of what I’m currently getting and

While a file is opened by one client, can other clients delete the file? If it cannot be deleted, how is this guaranteed? Thanks~

Hi Peter, A few things to try/explore: I don’t think that we have ever tested with 2x pmem DIMMs per socket. Maybe you could try with dram instead of pmem to see whether the performance

Hi Lipeng, Assuming that you are using 1.2, you can create a POSIX container with the daos utility: $ daos cont create --pool <POOL_UUID> --type POSIX You get back a container UUID that you

Try running the utils/setup_daos_admin.sh script as sudo. The admin binary should be moved to /usr/bin/ with setuid. Remove executable bit from install/bin/daos_admin. These steps are performed

What are the manual steps? I tried using setuid and checking immutable bit, but I still get the privileged helper (daos_admin) does not have root permissions, e.g., # chmod u+s

Thank you for the reply, Yes, I have mounted the Optane modules as an ext4 filesystem; a quick FIO test is able to achieve > 1 MIOPs. My thought was that it would be network related, however I've

Hi, Have you tried benchmarking the hardware directly, rather than through DAOS? i.e. running some benchmarks just on an ext4 filesystem mounted on the Optane on a single node. Just to check that

Hello again, I've tried some more to improve these results, different DAOS versions (including the YUM repo), different MPI versions, DAOS configurations, etc. I'm still unable to diagnose this

Hi, How to create a POSIX container first by calling "daos cont create" and then open it inside my code using "daos_cont_open()"? Should I pass some environment variables into my code? Thanks, Lipeng

Hi, Permissions checks when using the DFS API are only done on the pool and container ACLs during dfs_mount(). The DAOS/DFS client does not cache any data on the client side. So if you lookup a

Hi~, I have two questions about DFS metadata: 1. When the client opens a file or directory, will it check the permissions for each directory on the path, or will it only check at dfs_mount()? 2.

Actually, it's been pointed out to me I was confusing engines and targets. So ignore me. :) -- Tel: +44 131 6506470 skype: remoteadrianj

It would be sensible to increase the number of engines per node. For our system, where we have 48 cores per node, we're running 12 engines per socket, 24 per node. This night be too many, but I think