Gentoo Archives: gentoo-server

From: xyon <xyon@×××××××××××.com>
To: gentoo-server@l.g.o
Subject: Re: [gentoo-server] RAID 1+0 question
Date: Thu, 02 Mar 2006 17:15:22
Message-Id: ME-1FErMB-0000NW-NO@indigorobot.com
In Reply to: Re: [gentoo-server] RAID 1+0 question by Marton Gabor
1 menuconfig:
2
3 [*] Multiple devices driver support (RAID and LVM) x x
4 x x <*> RAID support x x
5 x x < > Linear (append) mode (NEW) x x
6 x x < > RAID-0 (striping) mode (NEW) x x
7 x x < > RAID-1 (mirroring) mode (NEW) x x
8 x x < > RAID-10 (mirrored striping) mode (EXPERIMENTAL) (NEW) x x
9 x x <*> RAID-4/RAID-5 mode x x
10 x x < > RAID-6 mode (NEW) x x
11 x x < > Multipath I/O support (NEW) x x
12 x x < > Faulty test module for MD (NEW)
13
14
15 Maybe I am missing something here?
16
17
18
19 On Thu, March 2, 2006 11:54, Marton Gabor wrote:
20 > Hi!
21 >
22 > Another mail said that the kernel cannot be placed to a RAID5 array,
23 > only to a RAID1 array, so who's right? Or did I got something wrong?
24 >
25 > Marton Gabor
26 > <gabor.marton@××××××××××.hu>,<ICQ UIN: 169394884>,<T: +36 30 447-2042>
27 > VE-MIK
28 > VeHoK informatikai megbizott
29 > informatika-l adminisztrator
30 > informatika-lev adminisztrator
31 > bsc-info adminisztrator
32 > gazdinfo adminisztrator
33 >
34 >
35 >
36 > xyon wrote:
37 >
38 >>(4 X 250GB ) - (1 X 250GB) = 750GB without hotspare. Although having a
39 >>hot-spare may be worth it.
40 >>
41 >>You should be able to RAID-5 /boot and all other partitions (minus swap,
42 >>of course). As long as the RAID modules are built into the kernel and you
43 >>have a functional raid config, you should be good.
44 >>
45 >>On Thu, March 2, 2006 11:19, Marton Gabor wrote:
46 >>
47 >>
48 >>>Hi!
49 >>>
50 >>>Thank you all for the fast replies, you helped me a lot. Unfortunately
51 >>>we cannot afford a HW RAID card, so I have to make it with software
52 >>> RAID.
53 >>>Now I have the idea to use RAID5 and if I get the picure rigth I need
54 >>>let's say a ~100MB /boot in RAID1, 512MB swap not in RAID on every disk,
55 >>>and I can build a RAID5 from the rest of the storage space, and will be
56 >>>able to use 750GB-(/boot*4)-(swap*4) and the 4th HD will store the
57 >>>so-called parity information.
58 >>>
59 >>>Marton Gabor
60 >>><gabor.marton@××××××××××.hu>,<ICQ UIN: 169394884>,<T: +36 30 447-2042>
61 >>>VE-MIK
62 >>>VeHoK informatikai megbizott
63 >>>informatika-l adminisztrator
64 >>>informatika-lev adminisztrator
65 >>>bsc-info adminisztrator
66 >>>gazdinfo adminisztrator
67 >>>
68 >>>
69 >>>
70 >>>--
71 >>>gentoo-server@g.o mailing list
72 >>>
73 >>>
74 >>>
75 >>>
76 >>
77 >>
78 >>
79 >>
80 >
81 > --
82 > gentoo-server@g.o mailing list
83 >
84 >
85
86
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