Seagate ST34572WC Spezifikationen PDF herunterladen (Seite 65)

Appendix I: Splitting Mirrors to Perform Backups

Make sure the database is not active before you split it. The following example uses

/dev/vg02/lvol1 to show this process. Use lvdisplay -v /dev/vg02/lvol1 to verify that

/dev/vg02/lvol1 is mirrored and current.

1. To split the logical volume, enter:

# sync

# lvsplit -s backup /dev/vg02/lvol1

The system console displays the following message:

Logical volume "/dev/vg02/lvol1backup" has been successfully created

with character device "/dev/vg02/rlvol1backup".

Logical volume "/dev/vg02/lvol1" has been successfully split.

The original logical volume, /dev/vg02/lvol1, continues to be available for use.

The new logical volume, /dev/vg02/lvolbackup, split off from the original, now exists.

2. Enter fsck on the split logical volume:

# fsck /dev/vg02/rlvol1backup

or:

# fsck -F vxfs /dev/vg02/rlvol1backup (for JFS file systems)

3. Perform the backup of the file system:

”/dev/vg02/lvol1backup". (preferred backup utility)

4. When the backup is done, unmount the file system (if you had mounted it) in the split-off logical

volume when you are ready to merge the split pairs.

5. To merge the split-of the logical volume and the original logical volume back into one mirrored

logical volume, enter:

# lvmerge /dev/vg02/lvol1backup /dev/vg02/lvol1

6. To verify the merged mirror, enter:

# lvdisplay -v /dev/vg02/lvol1

1 2 ... 60 61 62 63 64 65 66 67

Keine Kommentare

Seagate ST34572WC Spezifikationen Seite 65