Gentoo Archives: gentoo-user

From: Alan McKinnon <alan.mckinnon@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] migrating disks (from mounts to disklabels
Date: Fri, 19 Nov 2010 12:08:07
Message-Id: 201011191407.54833.alan.mckinnon@gmail.com
In Reply to: Re: [gentoo-user] migrating disks (from mounts to disklabels by Marius Vaitiekunas
1 Apparently, though unproven, at 12:49 on Friday 19 November 2010, Marius
2 Vaitiekunas did opine thusly:
3
4 > Hi,
5 > One question about ext4. Is it possible to resize partition without
6 > unmounting it like on reiserfs filesystem?
7
8 Yes, you can grow a mounted filesystem, just not shrink it. Most decent Unix
9 filesystems support this, I think xfs is the only one in common use that
10 doesn't.
11
12
13
14
15 >
16 > On Fri, Nov 19, 2010 at 11:04 AM, Alan McKinnon
17 <alan.mckinnon@×××××.com>wrote:
18 > > Apparently, though unproven, at 03:44 on Friday 19 November 2010, Walter
19 > > Dnes
20 > >
21 > > did opine thusly:
22 > > > On Wed, Nov 17, 2010 at 10:20:52PM -0600, Dale wrote
23 > > >
24 > > > > This is mine and it worked when I rebooted a bit ago.
25 > > > >
26 > > > > LABEL=boot /boot ext2 noatime 1 2
27 > > > > LABEL=root / reiserfs defaults 0 1
28 > > > > LABEL=swap none swap sw 0 0
29 > > > > LABEL=portage /usr/portage ext3 defaults 0 1
30 > > > > LABEL=home /home reiserfs defaults 1 1
31 > > > > LABEL=data /data reiserfs defaults 0 1
32 > > > >
33 > > > > I use a variety of file systems don't I? lol I hope that helps.
34 > > > >
35 > > > I have my own weird setup that optimizes disk usage, without LVM. It
36 > > >
37 > > > consists of a 256 *MEGA*byte / partition (ext2fs), some swap, and the
38 > > > rest of the drive is one big reiserfs3 partition mounted as /home.
39 > > > /opt, /var, /usr/, and /tmp physically reside on the big /home
40 > > > partition, but are bindmounted into the / partition.
41 > > >
42 > > > Device Boot Start End Blocks Id System
43 > > >
44 > > > /dev/sda1 1 121601 976760001 5 Extended
45 > > > /dev/sda5 1 33 265009+ 83 Linux
46 > > > /dev/sda6 34 1209 9446188+ 82 Linux swap /
47 > > > Solaris /dev/sda7 1210 121601 967048708+ 83 Linux
48 > > >
49 > > > /dev/sda5 / ext2 noatime,nodiratime,async
50 > > > 0 1 /dev/sda7 /home reiserfs
51 > > > noatime,nodiratime,async,notail 0 1 /home/bindmounts/opt /opt
52 > >
53 > > auto
54 > >
55 > > > bind 0 0 /home/bindmounts/var /var
56 > > >
57 > > > auto bind 0 0 /home/bindmounts/usr
58 > > > /usr
59 > > >
60 > > > auto bind 0 0 /home/bindmounts/tmp
61 > > >
62 > > > /tmp auto bind 0 0 /dev/sda6
63 > > >
64 > > > none swap sw 0 0
65 > >
66 > > Let me optimize that for you a little bit more:
67 > >
68 > > A single 1T reiser3 partition mounted at /
69 > >
70 > > This will optimize away the small performance loss introduced by that
71 > > (empty)
72 > > / on ext2
73 > >
74 > > Seriously dude, this looks like a dumb scheme that gives you warm and
75 > > fuzzies
76 > > but doesn't actually accomplish anything except increased complexity.
77 > >
78 > > Feel free to publish verifiable metrics to back up your case.
79 > >
80 > >
81 > > --
82 > > alan dot mckinnon at gmail dot com
83
84 --
85 alan dot mckinnon at gmail dot com

Replies

Subject Author
Re: [gentoo-user] migrating disks (from mounts to disklabels Neil Bothwick <neil@××××××××××.uk>