Re: [lustre-discuss] failed OST recover

2020-11-30 Thread Sergey Zhumatiy
Many years ago when I was using Lustre-1.8.X, I used to suffer the same nightmare as you now. The following procedure saved me. But I am not sure whether it works to you or not. Thank you! I had found this recipe, but in new lustre versions it does not work, ll_recover_lost_found_objs does not

Re: [lustre-discuss] failed OST recover

2020-11-30 Thread Tung-Han Hsieh
Dear Serg, Many years ago when I was using Lustre-1.8.X, I used to suffer the same nightmare as you now. The following procedure saved me. But I am not sure whether it works to you or not. 1. umount all the clients, umount OST. 2. mount OST as ldiskfs: mount -t ldiskfs /dev/ /mnt 3. Ru

[lustre-discuss] failed OST recover

2020-11-30 Thread Sergey Zhumatiy
Hello! Please, help to resolve... One ost on my lustre installation has been failed. It lost all fs metadatam so I couldn't mount it as lustre filesystem. I've checked it by e2fsck and all data was moved into lost+found folder. Then I moved this folder to another storage, re-created this o