Gentoo Archives: gentoo-user

From: David W Noon <dwnoon@××××××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] OT:Choosing a filesystem
Date: Fri, 02 Apr 2010 11:40:02
Message-Id: 20100402123858.4a70ff20@karnak.local
1 On Fri, 02 Apr 2010 11:20:02 +0200, meino.cramer@×××.de wrote about Re:
2 [gentoo-user] OT:Choosing a filesystem:
3
4 [snip]
5 >A question to LVM: As much as I know, LVM combines several partition
6 >to one big partition, and if one partition fails, at least other
7 >others of that volume are damaged, too.
8
9 Disks fail. Sectors fail. Partitions do not fail. Logical volumes do
10 not fail.
11
12 If your disk fails you lose *all* partitions on it.
13
14 If some sectors fail, the file(s) backed by those sectors will be
15 corrupted -- regardless of filesystem type. If the defective sectors
16 back a filesystem's superblock or other infrastructure, you could well
17 lose the filesystem; but most modern filesystems keep redundant copies
18 of their infrastructure, and fsck can sometimes recover.
19
20 >What is the advantage of using LVM and several small partitions
21 >instead of one in the size of the sum of the others and not using
22 >LVM?
23
24 LVM provides immense flexibility in creating, deleting and expanding
25 filesystems. Once you get used to using LVM, which is not difficult,
26 you will never go back to partitions.
27 --
28 Regards,
29
30 Dave [RLU #314465]
31 ======================================================================
32 dwnoon@××××××××.com (David W Noon)
33 ======================================================================

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