Adding Mirror Chunks

If you add a chunk to a dbspace, blobspace, or sbspace that is mirrored, you must also add a corresponding mirror chunk.

Adding Mirror Chunks Using onspaces

You can use the onspaces utility to add a primary chunk and its mirror chunk to a dbspace, blobspace, or sbspace. The following example adds a chunk, chunk2, to the db_acct dbspace. Because the dbspace is mirrored, a mirror chunk, mirror_chk2, is also added.

onspaces -a db_acct -p /dev/chunk2 -o 5000 -s 2500 -m /dev/mirror_chk2 5000

Adding Mirror Chunks Using ISA

To add mirror chunks with ISA:

1. Select Storage > Chunks.
2. Select the dbspace name and click Add Chunk.
3. Enter the path and offset for the mirror chunk.

Adding Mirror Chunks Using ON-Monitor (UNIX)

In ON–Monitor, the Dbspaces > Add-chunk option displays fields in which to enter the primary-chunk pathname, offset, and size, and the mirror-chunk pathname and offset.