Re: [lustre-discuss] MGS+MDT migration to a new storage using LVM tools

2020-07-21 Thread David Cohen
Thanks Andreas for your detailed reply. I took your advice on the MDT naming. As now the migration is complete I want to share some major problems I had on the way. I don't know where to point the blame, the Lustre kernel, e2fprogs, srp tools, multipath version, lvm version and moving from 51

Re: [lustre-discuss] MGS+MDT migration to a new storage using LVM tools

2020-07-19 Thread Andreas Dilger
On Jul 19, 2020, at 12:41 AM, David Cohen wrote: > > Hi, > We have a combined MGS+MDT and I'm looking for a migration to new storage > with a minimal disruption to the running jobs on the cluster. > > Can anyone find problems in the scenario below and/or suggest another > solution? > I would a

[lustre-discuss] MGS+MDT migration to a new storage using LVM tools

2020-07-18 Thread David Cohen
Hi, We have a combined MGS+MDT and I'm looking for a migration to new storage with a minimal disruption to the running jobs on the cluster. Can anyone find problems in the scenario below and/or suggest another solution? I would appreciate also "no problems" replies to reassure the scenario before