I am trying to reconstruct a failed 4 disk RAID5 Western Digital ShareSpace device using 3 of the 4 disks connected via USB to an Ubuntu 12.04 machine. I get what seems like a successful re-assemble from -
That was a great catch! Although I was running it as root , I was NOT running the mount command from the root folder. Now when I run it -
I have a bad feeling that there's something wrong with the partition tables. Appreciate your help!
From what I've been reading about those ShareSpace devices, there should be an LVM2 volume, indeed, on top of the raid. So you should find it, and then mount it. If things are like that, of course you cannot mount the raid volume itself, because it doesn't have a filesystem on it. But you didn't find the lvm2 volume, when running vgscan, so I don't have good feelings...
Since you've used --force to reassemble the raid (instead of only --run), now the raid is active, but it could nonetheless be corrupted:
(from mdadm manual)
Quote:
-f, --force
Assemble the array even if the metadata on some devices appears to be out-of-date.
If mdadm cannot find enough working devices to start the array, but can find some
devices that are recorded as having failed, then it will mark those devices as
working so that the array can be started. An array which requires --force to be
started may contain data corruption. Use it carefully.
-R, --run
Attempt to start the array even if fewer drives were given than were present last
time the array was active. Normally if not all the expected drives are found and
--scan is not used, then the array will be assembled but not started. With --run
an attempt will be made to start it anyway.
Let's made another attempt, manually inspecting the beginning of /dev/md2:
(Better than less, use a text editor of your choice).
Among binary data, do you see some LVM metadata declarations? Can you find the most recent one? Or there's nothing useful?
--
Bye
Without lvm metadata, I really don't know what could we do.
I'm sorry you didn't find someone more skilled than me. I'm neither a sysadmin nor an expert, actually.
Maybe you want to wait a little more for some help.
--
Bye.
Hello,
I want to delete a RAID configuration an old server has.
Since i haven't the chance to work with the specific raid controller in the past can you please help me how to perform the configuraiton?
I downloaded IBM ServeRAID Support CD but i wasn't able to configure the video card so i... (0 Replies)
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Question:
Should I remove the hardware raid on c1t2d0 first?
My... (4 Replies)
Hello,
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Hello All,
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TIA
Curious
solarister (1 Reply)
Dear ALl,
I have a RAID 5 volume which is as below
d120 r 60GB c1t2d0s5 c1t3d0s5 c1t4d0s5 c1t5d0s5
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d8 r 99GB c1t2d0s1 c1t3d0s1... (2 Replies)
Hello, I am aware that our system has two hard drives with raid but i'm not sure as to the type of raid the system uses.
I tried this.
# df
Filesystem 512-blocks Free %Used Iused %Iused Mounted on
/dev/hd4 229376 76272 67% 6748 12% /
/dev/hd2 3080192... (1 Reply)
Can sed be used to take a existing record and reverse the order of defined character placement if there is no delimeters?
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0123456789CO
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9876543210CO
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