Case:
The original server of the customer is a plate array of 16 plates, of which 15 plates are made into RAID5, and a plate is reserved as a thermal disk, but there is no heat disk during the actual configuration.The number in the middle is 1-16) there is a bad session. Limbers 3 as a hot set replaced on the 16th plate, and it is not done without Rebuild.The file system cannot mount at present.
Solution:
1. Through analysis of 16 disks, it is found that the No. 1 disk is a hard disk that has been replaced before the problem. The information in the hard disk does not match the content of other hard disks of RAID5.It can be removed.2. It is found that the first half of the contents of the No. 3 board is the same as the No. 16.3. A total of 16 plates of the plate, excluding No. 1 and No. 3 disk, only 14 plates are left. After analysis, this is RAID5 composed of 15 plates. Now there are only 14 plates of data.Lack a plate to generate.4. Complete the combination to restore more than 90 GB files under the XFS file system.