Gentoo Archives: gentoo-user

From: Florian Philipp <lists@×××××××××××.net>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Re: raid1 grub ext4
Date: Thu, 14 Apr 2011 14:13:04
Message-Id: 4DA7008F.5030303@binarywings.net
In Reply to: [gentoo-user] Re: raid1 grub ext4 by James
1 Am 14.04.2011 15:41, schrieb James:
2 > James <wireless <at> tampabay.rr.com> writes:
3 >
4 >
5 >> Not sure what this inconsistency is tell me:
6 >
7 >
8 > I rebooted, using a minimal CD. Dmesg has this information:
9 >
10 > md: bind<sda1>
11 > md: bind<sdb3>
12 > md: bind<sda2>
13 > md: bind<sda3>
14 > md/raid1:md126: active with 2 out of 2 mirrors
15 > md126: detected capacity change from 0 to 1994983948288
16 > md: bind<sdb1>
17 > md126: unknown partition table
18 > md: bind<sdb2>
19 > md/raid1:md127: active with 2 out of 2 mirrors
20 > md127: detected capacity change from 0 to 268423168
21 > md/raid1:md125: active with 2 out of 2 mirrors
22 > md125: detected capacity change from 0 to 5143252992
23 > md127: unknown partition table
24 > md125: unknown partition table
25 >
26 >
27 > unknown partition tables?
28 >
29 > Trying to avoid the 4k disk problems, I used
30 > this to format the drives originally (which) I
31 > found in a gentoo bug:
32 >
33 > livecd ~ # fdisk -c -S 56 -u /dev/sda
34 >
35 > Command (m for help): p
36 >
37 > Disk /dev/sda: 2000.4 GB, 2000398934016 bytes
38 > 255 heads, 56 sectors/track, 273601 cylinders, total 3907029168 sectors
39 > Units = sectors of 1 * 512 = 512 bytes
40 > Sector size (logical/physical): 512 bytes / 512 bytes
41 > I/O size (minimum/optimal): 512 bytes / 512 bytes
42 > Disk identifier: 0xab83344a
43 >
44 > Device Boot Start End Blocks Id System
45 > /dev/sda1 * 2048 526335 262144 fd Linux raid autodetect
46 > /dev/sda2 526336 10573823 5023744 fd Linux raid autodetect
47 > /dev/sda3 10573824 3907029167 1948227672 fd Linux raid autodetect
48 >
49 >
50 > I think my problem in the partition table is unknown?
51 >
52 > If so, what did I miss and how to recover?
53 >
54 > Also, still unsure if my fstab is correct. (see previous post).
55 >
56 > when I boot with the minCD all is there after I mount and go
57 > into chroot environment....
58 >
59 > Perplexed,
60 > James
61 >
62 >
63
64 I don't think the missing partition table is your problem. Linux
65 supports partitions within md devices. You don't use this feature and
66 therefore there is no partition table within the md devices to be detected.
67
68 However, you might be onto something with the changed sector offset. But
69 I don't know enough of this to help you.
70
71 Regards,
72 Florian Philipp

Attachments

File name MIME type
signature.asc application/pgp-signature

Replies

Subject Author
[gentoo-user] Re: raid1 grub ext4 James <wireless@×××××××××××.com>