Re: [lustre-discuss] ZFS based OSTs need advice

2018-06-27 Thread Zeeshan Ali Shah
ntroduction_to_Lustre_Object_Storage_Devices_(OSDs) > > http://wiki.lustre.org/Creating_Lustre_Object_Storage_Services_(OSS) > > > > There are also sections that cover the MGT and MDTs. > > > > Malcolm. > > > > > > *From: *lustre-discuss on > behalf

Re: [lustre-discuss] ZFS based OSTs need advice

2018-06-26 Thread Cowe, Malcolm J
-discuss] ZFS based OSTs need advice Our OST are based on supermicro SSG-J4000-LUSTRE-OST , it is a kind of JBOD. all 360 Disks (90 disks x4 OST) appear in /dev/disk in both OSS1 and OSS2 . My idea is to create zfspool of Raidz2 (9+2 spare) which means arround 36 zfspools will be created . Q1) Out

Re: [lustre-discuss] ZFS based OSTs need advice

2018-06-26 Thread Zeeshan Ali Shah
Our OST are based on supermicro SSG-J4000-LUSTRE-OST , it is a kind of JBOD. all 360 Disks (90 disks x4 OST) appear in /dev/disk in both OSS1 and OSS2 . My idea is to create zfspool of Raidz2 (9+2 spare) which means arround 36 zfspools will be created . Q1) Out of 36 zfs pools shall i create al

Re: [lustre-discuss] ZFS based OSTs need advice

2018-06-26 Thread Dzmitryj Jakavuk
Hello You can share 4 osts between pair of oss making 2 osts imported into one oss and 2 osts into other oss. At the same time hdds need to be shared between all oss. So in normal conditions 1 oss will import 2 ost and the second oss will import Other 2 osts.in case of ha single oss can imp

Re: [lustre-discuss] ZFS based OSTs need advice

2018-06-26 Thread Nathaniel Clark
I assume you mean, that your storage is active-active and cross- connected between your OSS's. And you want both OSS to be able to present any of the 4 OSTs. Each OST should be it's own zpool, this will let each OST be imported / failed between OSS's independently. There's a guide on how to set

[lustre-discuss] ZFS based OSTs need advice

2018-06-26 Thread Zeeshan Ali Shah
We have 2 OSS with 4 OST shared . Each OST has 90 Disk so total 360 Disks . I am in phase of installing 2OSS as active/active but as zfs pools can only be imported in single OSS host in this case how to achieve active/active HA ? As what i read is that for active/active both HA hosts should have a