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Sorry it isn't that I think the problem is with one of the drives. It is |
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just that if the problem is with one of the drives then it is easier to |
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deal with. If the controller went bad, then it will be more difficult to |
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try to recover from. |
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|
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|
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Penghui Wang wrote: |
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> Thanks very much, David, |
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> |
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> Could you tell me why you said that the problem is one of the drivers |
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> and not the controller? In my opinion, i think the filesystem has been |
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> broken by the force online and force check operations. So i am afraid if |
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> i remove one of the disks, then the current stuation will be changed, |
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> and it would be harder to recover the filesystem. |
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> |
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> The extened partition sda4, contained two logic partitions. swap and |
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> /home. Now both of them disappeared, and there is a wrong beginning and |
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> end cylinker sda5 there. |
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> |
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> If i create the two partition manully as the very same both begining and |
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> end as before, is it helpfull. Or there are some other partition scaning |
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> program i could use? |
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> |
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> Thank very much again. |
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> |
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> Penghui Wang |
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> |
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> |
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> |
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> |
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> On 9/17/07, *David Gardner* <david@×××××××××.net |
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> <mailto:david@×××××××××.net>> wrote: |
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> |
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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 |
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> 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 |
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> operations on |
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> > the server, such as "ls", "cp", "ifconfig". Suddenly, there |
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> 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 |
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> disks. |
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> > |
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> > After boot the server, we have entered the RAID controller BIOS, |
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> found |
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> > all the physical disks has been the "FAILED/OFFLINE" |
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> 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 <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 |
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> 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 |
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> sda6. |
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> > |
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> > The first three partitions could mounted successfully, and sda |
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> 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 |
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> 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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> gentoo-server@g.o <mailto:gentoo-server@g.o> mailing list |
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> |
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> |
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> |
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> |
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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 <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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gentoo-server@g.o mailing list |