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Assuming that the problem is one of the drives and not the controller, |
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you could try booting with only two of the disks online. If the Raid |
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controller is the problem you may need another controller of the same |
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model to re-construct the array. |
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|
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Penghui Wang wrote: |
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> Hello, list, |
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> |
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> Recently, one of our servers has been crashed because of some harddisk |
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> problem. In several days before, the hd speed of this server become a |
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> little slow than usual. And yesterday, during some basic operations on |
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> the server, such as "ls", "cp", "ifconfig". Suddenly, there appeared a |
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> I/O error, then the server died. |
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> |
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> The RAID controller is: |
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> 0000:02:03.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID |
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> (rev 01) |
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> And there are a RAID-5 logical disk via three 146G SCSI physical disks. |
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> |
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> After boot the server, we have entered the RAID controller BIOS, found |
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> all the physical disks has been the "FAILED/OFFLINE" situation. Then we |
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> forced the status of HD to ONLINE status. |
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> Then we boot the system via a KNOPPIX cd, and the partition table |
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> detected by fdisk look likes: |
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> |
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> root@4[root <mailto:root@4[root>]# fdisk -l |
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> Warning: ignoring extra data in partition table 5 |
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> Warning: ignoring extra data in partition table 5 |
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> Warning: ignoring extra data in partition table 5 |
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> Warning: invalid flag 0xffffaa0a of partition table 5 will be corrected |
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> by w(rite) |
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> |
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> Disk /dev/sda: 293.6 GB, 293628542976 bytes |
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> 255 heads, 63 sectors/track, 35698 cylinders |
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> Units = cylinders of 16065 * 512 = 8225280 bytes |
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> |
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> Device Boot Start End Blocks Id System |
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> /dev/sda1 * 1 13 104391 83 Linux |
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> /dev/sda2 14 650 5116702+ 83 Linux |
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> /dev/sda3 651 1287 5116702+ 83 Linux |
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> /dev/sda4 1288 35698 276406357+ 5 Extended |
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> /dev/sda5 ? 1675 2071 3177836+ dd Unknown |
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> |
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> In fact, there should be sda5 and sda6, i guess cylinder 1289-1675 |
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> should be the sda5 - swap partition. And the rest should be the sda6. |
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> |
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> The first three partitions could mounted successfully, and sda contained |
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> NO data which should be the boot partition. But sda2 and sda3 which |
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> should be root partition and /var partition contained NO data too, but |
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> there are so many files in the folder "lost+found". |
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> |
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> We have used GUI parted, parted, testdisk, gpart and some other disk |
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> detect tools to the scan the disk and try to find out the correct |
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> partition tables, but no results. |
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> |
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> So i post this problem here to ask for some advices. |
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> Could someone pick me up? |
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> |
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> Thanks in advance. |
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> |
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> Penghui Wang. |
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> -- |
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> Wang Penghui |
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> http://www.extmail.org |
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> http://www.postfix.org.cn |
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|
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|
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-- |
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David Gardner |
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-- |
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