we have DELL server (CENTOS 4.X) with MD1000 connect on it. One of Raid5 (internal 4 disks) has hard disk bad and I replace it. I saw /var/log/messages have following entry:
=======================================Aug 18 15:33:20 host1 Server Administrator: Storage Service EventID: 2049 Array disk removed: Array Disk 0:11 Controller 1, Connector 0Aug 18 15:34:09 host1 Server Administrator: Storage Service EventID: 2052 Array disk inserted: Array Disk 0:11 Controller 1, Connector 0Aug 18 15:34:09 host1 Server Administrator: Storage Service EventID: 2065 Array disk Rebuild started: Array Disk 0:11 Controller 1, Connector 0Aug 19 00:42:58 host1 Server Administrator: Storage Service EventID: 2124 Redundancy normal: Virtual Disk 0 (Virtual Disk 0) Controller 1 (PERC 4e/DC)Aug 19 00:42:58 host1 Server Administrator: Storage Service EventID: 2092 Array disk Rebuild completed: Array Disk 0:11 Controller 1, Connector 0Aug 19 00:45:53 host1 Server Administrator: Storage Service EventID: 2127 Background Initialization started: Virtual Disk 0 (Virtual Disk 0) Controller 1 (PERC 4e/DC)
=============================================
My questions are:
1. why after "disk rebuild" there have "background initialization"?
2. is all kind of configuration (e.g. RAID0, RAID10, ...) need perform "background initialization"?
3. if I run heavy application, will it hurt "background initialization" and "disk rebuild"?
Thanks.
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