Sorry it isn't that I think the problem is with one of the drives. It is
just that if the problem is with one of the drives then it is easier to
deal with. If the controller went bad, then it will be more difficult to
try to recover from.
Penghui Wang wrote:
Thanks very much, David,
Could you tell me why you said that the problem is one of the drivers
and not the controller? In my opinion, i think the filesystem has been
broken by the force online and force check operations. So i am afraid if
i remove one of the disks, then the current stuation will be changed,
and it would be harder to recover the filesystem.
The extened partition sda4, contained two logic partitions. swap and
/home. Now both of them disappeared, and there is a wrong beginning and
end cylinker sda5 there.
If i create the two partition manully as the very same both begining and
end as before, is it helpfull. Or there are some other partition scaning
program i could use?
Thank very much again.
Penghui Wang
On 9/17/07, *David Gardner* <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>> wrote:
Assuming that the problem is one of the drives and not the controller,
you could try booting with only two of the disks online. If the Raid
controller is the problem you may need another controller of the same
model to re-construct the array.
Penghui Wang wrote:
> Hello, list,
>
> Recently, one of our servers has been crashed because of some
harddisk
> problem. In several days before, the hd speed of this server become a
> little slow than usual. And yesterday, during some basic
operations on
> the server, such as "ls", "cp", "ifconfig". Suddenly, there
appeared a
> I/O error, then the server died.
>
> The RAID controller is:
> 0000:02:03.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID
> (rev 01)
> And there are a RAID-5 logical disk via three 146G SCSI physical
disks.
>
> After boot the server, we have entered the RAID controller BIOS,
found
> all the physical disks has been the "FAILED/OFFLINE"
situation. Then we
> forced the status of HD to ONLINE status.
> Then we boot the system via a KNOPPIX cd, and the partition table
> detected by fdisk look likes:
>
> [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED] <mailto:[EMAIL
PROTECTED]>[root>]# fdisk -l
> Warning: ignoring extra data in partition table 5
> Warning: ignoring extra data in partition table 5
> Warning: ignoring extra data in partition table 5
> Warning: invalid flag 0xffffaa0a of partition table 5 will be
corrected
> by w(rite)
>
> Disk /dev/sda: 293.6 GB, 293628542976 bytes
> 255 heads, 63 sectors/track, 35698 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
>
> Device Boot Start End Blocks Id System
> /dev/sda1 * 1 13 104391 83 Linux
> /dev/sda2 14 650 5116702+ 83 Linux
> /dev/sda3 651 1287 5116702+ 83 Linux
> /dev/sda4 1288 35698 276406357+ 5 Extended
> /dev/sda5 ? 1675 2071 3177836+ dd Unknown
>
> In fact, there should be sda5 and sda6, i guess cylinder 1289-1675
> should be the sda5 - swap partition. And the rest should be the
sda6.
>
> The first three partitions could mounted successfully, and sda
contained
> NO data which should be the boot partition. But sda2 and sda3 which
> should be root partition and /var partition contained NO data
too, but
> there are so many files in the folder "lost+found".
>
> We have used GUI parted, parted, testdisk, gpart and some other disk
> detect tools to the scan the disk and try to find out the correct
> partition tables, but no results.
>
> So i post this problem here to ask for some advices.
> Could someone pick me up?
>
> Thanks in advance.
>
> Penghui Wang.
> --
> Wang Penghui
> http://www.extmail.org
> http://www.postfix.org.cn
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