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How to session, how to safely remove VN block or clarion lumps from our VN file or Solera in reference to EMC support solution article EC2 41502. This video demonstrates how to safely remove VX block or clarion lumps from a VN file or Solera. This procedure only applies to VN file or Solera volumes attached to VX block or clarion arrays prior to removing or reassigning disks owned by VN file or Solera.
All exports and mounts on file systems must be permanently un exported and unmounted. Any file systems, meta volumes, stripe volumes and slices built on the discs that are going to be removed must also be deleted using cli commands. If this procedure is not properly followed, there is a possibility of data loss, contact EMC customer support before proceeding. If there are any questions, these are steps involved in removing a line from V NX file or Solera.
Identify the discs on the VN file or Solera that need to be removed. Identify the file system which is using the disk unmount and delete the file system check if the disks are used by manual storage pool delete the storage pool check if the disks are part of custom volume stripe meta or slice, delete the custom volume. Delete the disk, remove the line from file storage group rescan and update the data movers list discs on V NX file or Solera identify the discs that needs to be removed.
Identify line number of discs that is presented from VX block or clarion array. For example, 0026 is a hexadecimal representation of the clarion line with a U 38 identify which file system is using the disk that needs to be removed. List all file systems on the VX file or Solera. My FS is the file system which is using the required discs that needs to be deleted from file system info. We see file system is in use rewrite servers or server underscore two identify if the file system is using required discs. Notice the required discs. 82 and 83 are used by this file system.
Unmount the file system. If it is successful, we see status as done, delete the file system. In the deletion summary, we see in use status as false list discs on V NX file or Solera to check if the discs can be deleted in the output. We still see the required discs are in use. Identify the pool in which a required disc is used. We notice the name of the pool is my pool list, all file system pools, identify the pool, which is using the required disc that needs to be deleted.
Identify from pool information if the pool is used by any file system. Here we see false as it is not used by any file system to leave the poor list discs on V NX file or Solera to check if the discs can be deleted in the output. We still see the required discs are in use. Identify the volume which is using the disc from the output. We see disc 82 is used by volume 441 details of volume can be seen here. Just 82 and 83 are used by this volume. And this is a meta volume.
Delete volume, either using volume id or volume name list discs on V NX file or Solera to check if the discs can be deleted in the output. We see the required discs are not used. Now we can delete the discs, delete the disks. Now remove the lines from the file storage group on VX or clarion array.
Identify the HL of lines that needs to be removed, remove the lines from file storage group using HLU when prompted press Y to confirm deletion after removing the lines from storage group perform health check on backhand if no errors. After the backend, health check update, all data movers.
