Re: [lustre-discuss] Limit to number of OSS?

2019-10-10 Thread Andreas Dilger
On Oct 10, 2019, at 11:20, Michael Di Domenico mailto:mdidomeni...@gmail.com>> wrote: On Mon, Oct 7, 2019 at 6:33 PM Andreas Dilger mailto:adil...@whamcloud.com>> wrote: With socklnd there are 3 TCP connections per client-server pair. For IB there is no such connection limit that I'm aware of.

Re: [lustre-discuss] Limit to number of OSS?

2019-10-10 Thread Michael Di Domenico
On Mon, Oct 7, 2019 at 6:33 PM Andreas Dilger wrote: > > With socklnd there are 3 TCP connections per client-server pair. > For IB there is no such connection limit that I'm aware of. just out of morbid curiosity, can very briefly explain the connectivity differences between TCP/IB. Does IB use

Re: [lustre-discuss] Limit to number of OSS?

2019-10-07 Thread Andreas Dilger
gremont, Aurelien" mailto:degre...@amazon.com>> Objet : Re: [lustre-discuss] Limit to number of OSS? On Oct 3, 2019, at 07:55, Degremont, Aurelien mailto:degre...@amazon.com>> wrote: Hello all! This doc from the wiki says "Lustre can support up to 2000 OSS pe

Re: [lustre-discuss] Limit to number of OSS?

2019-10-04 Thread Degremont, Aurelien
;lustre-discuss@lists.lustre.org" Objet : Re: [lustre-discuss] Limit to number of OSS? On Oct 3, 2019, at 07:55, Degremont, Aurelien mailto:degre...@amazon.com>> wrote: Hello all! This doc from the wiki says "Lustre can support up to 2000 OSS per file s

Re: [lustre-discuss] Limit to number of OSS?

2019-10-03 Thread Andreas Dilger
On Oct 3, 2019, at 07:55, Degremont, Aurelien mailto:degre...@amazon.com>> wrote: Hello all! This doc from the wiki says "Lustre can support up to 2000 OSS per file system" (http://wiki.lustre.org/Lustre_Server_Requirements_Guidelines). I'm a bit surprised by this statement. Does somebody has

[lustre-discuss] Limit to number of OSS?

2019-10-03 Thread Degremont, Aurelien
Hello all! This doc from the wiki says "Lustre can support up to 2000 OSS per file system" (http://wiki.lustre.org/Lustre_Server_Requirements_Guidelines). I'm a bit surprised by this statement. Does somebody has information about the upper limit to the number of OSSes? Or what could be the

Re: [lustre-discuss] limit on number of oss/ost's?

2018-10-11 Thread Patrick Farrell
The 160 limit has been raised. I don't know what the new one is, but it is *quite* large. I'm pretty sure it's beyond practical interest today. There are a few issues with having extremely large numbers of OSTs, especially if you are explicitly trading off 1 vs many OSTs. There are no

[lustre-discuss] limit on number of oss/ost's?

2018-10-11 Thread Michael Di Domenico
Is there a limit on the number of oss servers you can have in a single filesystem? is there one for ost's? I'm curious of the performance implications between two different configurations (this is just theory mind you)... 1000 oss with 1 ost each vs 100 oss with 10 ost each one could scale