Re: [lustre-discuss] User find out OST configuration

2023-02-09 Thread Anna Fuchs via lustre-discuss
Thank you! Depending on how complex your tool is, it may be better to use llapi_layout_from_file() or llapi_layout_from_xattr() to parse the binary layout directly from the file, rather than printing it out and then parsing the text again in userspace. at first the tool should be runable by

Re: [lustre-discuss] User find out OST configuration

2023-01-23 Thread Andreas Dilger via lustre-discuss
On Jan 23, 2023, at 10:01, Anna Fuchs mailto:anna.fu...@uni-hamburg.de>> wrote: Thanks! Is it planned to introduce some metric propagation to the user? For advanced users who are benchmarking stuff on remote systems it remains unclear which performance to expect if they can not access

Re: [lustre-discuss] User find out OST configuration

2023-01-23 Thread Laura Hild via lustre-discuss
> Additionally, how can a user find out the mapping of all available OSTs to > OSSs easily? I've used variations on grep -Fe failover_nids: -e current_connection: /proc/fs/lustre/*c/*/import ___ lustre-discuss mailing list

Re: [lustre-discuss] User find out OST configuration

2023-01-23 Thread Anna Fuchs via lustre-discuss
Thanks! Is it planned to introduce some metric propagation to the user? For advanced users who are benchmarking stuff on remote systems it remains unclear which performance to expect if they can not access underlaying hardware metrics. Sure, they can ask the admin to share the config, but it

Re: [lustre-discuss] User find out OST configuration

2023-01-21 Thread Andreas Dilger via lustre-discuss
Hi Anna, Beyond the number and size of OSTs and MDTs there isn't much information about the underlying storage available on the client. The "lfs df -v" command will print a "f" at the end for flash (non-rotational) devices, if the storage is properly configured. The "osc*.imports " parameter

[lustre-discuss] User find out OST configuration

2023-01-21 Thread Anna Fuchs via lustre-discuss
Hi, is it possible for a user (no root, so ssh to server) to find out the configuration of an OST? How many devices are there in one OST 'pool' (for both ldiskfs and ZFS) and even which type of devices they are (nvme, ssd, hdd)? Maybe even speeds and raid-levels? Additionally, how can a