From: David Greaves <david@dgreaves.com>
To: Krekna Mektek <krekna@gmail.com>
Cc: Mike Hardy <mhardy@h3c.com>, linux-raid@vger.kernel.org
Subject: Re: RAID 5 inaccessible - continued
Date: Tue, 14 Feb 2006 17:41:14 +0000 [thread overview]
Message-ID: <43F2163A.6030302@dgreaves.com> (raw)
In-Reply-To: <8b24c8b10602140918s136b5075s@mail.gmail.com>
Krekna Mektek wrote:
>I want to rebuilt from the good one and the faulty one. That's why I
>wanted to dd the disk to an image file, but it complains it has no
>boot sector.
>
>
>
>>>>I did the folowing:
>>>>
>>>>dd conv=noerror if=dev/hdd1 of=/mnt/hdb1/Faulty-RAIDDisk.img
>>>>losetup /dev/loop0 /mnt/hdb1/Faulty-RAIDDisk.img
>>>>
>>>>
You could try doing this again using ddrescue (google if you need to
install it):
ddrescue dev/hdd1 /mnt/hdb1/Faulty-RAIDDisk.img /mnt/hdb1/Faulty-RAIDDisk.log
Then do it again using -r10 (to increase the retries on the faulty sectors)
ddrescue -r10 dev/hdd1 /mnt/hdb1/Faulty-RAIDDisk.img /mnt/hdb1/Faulty-RAIDDisk.log
This will be much quicker because the log file contains details of the
faulty sectors.
With luck (mucho luck) you may not even lose data.
David
--
next prev parent reply other threads:[~2006-02-14 17:41 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-13 15:08 RAID 5 inaccessible - continued Krekna Mektek
2006-02-14 8:35 ` Krekna Mektek
2006-02-14 9:40 ` Neil Brown
2006-02-14 10:35 ` Krekna Mektek
[not found] ` <43F1FFE1.2010107@h3c.com>
2006-02-14 17:18 ` Krekna Mektek
2006-02-14 17:41 ` David Greaves [this message]
2006-02-15 9:36 ` Krekna Mektek
[not found] ` <8b24c8b10602151218i43886b75h@mail.gmail.com>
[not found] ` <43F3B119.1000800@dgreaves.com>
2006-02-16 14:32 ` Krekna Mektek
2006-02-16 15:08 ` Krekna Mektek
2006-02-16 16:42 ` Krekna Mektek
2006-02-15 9:35 ` Krekna Mektek
2006-02-15 9:59 ` Burkhard Carstens
2006-02-15 15:09 ` Krekna Mektek
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