Gentoo Archives: gentoo-user

From: Jarry <mr.jarry@×××××.com>
To: gentoo-user@l.g.o
Subject: [gentoo-user] Bind stole my /
Date: Fri, 06 Nov 2015 17:19:45
Message-Id: 563CE11E.50405@gmail.com
1 Hi Gentoo-users,
2
3 I noted one strange thing today: It seems one of my servers lost "/"!
4
5 vs5-dns ~ # df
6 Filesystem 1K-blocks Used Available Use% Mounted on
7 /var/log/named 10138552 2223148 7377344 24% /chroot/dns/var/log/named
8 tmpfs 308196 420 307776 1% /run
9 dev 10240 0 10240 0% /dev
10 shm 1540968 0 1540968 0% /dev/shm
11 cgroup_root 10240 0 10240 0% /sys/fs/cgroup
12 none 1048576 0 1048576 0% /var/tmp/portage
13
14 And it seems I found the thief who stole it:
15
16 vs5-dns ~ # /etc/init.d/named stop
17 * Caching service dependencies ... [ ok ]
18 * Stopping chrooted named ...
19 * Umounting chroot dirs ...
20 * umounting /chroot/dns/etc/bind ... [ ok ]
21 * umounting /chroot/dns/var/log/named ... [ ok ]
22 * umounting /chroot/dns/var/bind ... [ ok ]
23 vs5-dns ~ # df
24 Filesystem 1K-blocks Used Available Use% Mounted on
25 /dev/sda2 10138552 2223140 7377352 24% /
26 tmpfs 308196 416 307780 1% /run
27 dev 10240 0 10240 0% /dev
28 shm 1540968 0 1540968 0% /dev/shm
29 cgroup_root 10240 0 10240 0% /sys/fs/cgroup
30 none 1048576 0 1048576 0% /var/tmp/portage
31 vs5-dns ~ # /etc/init.d/named start
32 * Starting chrooted named ...
33 * Mounting chroot dirs
34 * mounting /etc/bind to /chroot/dns/etc/bind [ ok ]
35 * mounting /var/bind to /chroot/dns/var/bind [ ok ]
36 * mounting /var/log/named to /chroot/dns/var/log/named [ ok ]
37 * Checking named configuration ... [ ok ]
38 vs5-dns ~ # df
39 Filesystem 1K-blocks Used Available Use% Mounted on
40 /var/log/named 10138552 2223160 7377332 24% /chroot/dns/var/log/named
41 tmpfs 308196 420 307776 1% /run
42 dev 10240 0 10240 0% /dev
43 shm 1540968 0 1540968 0% /dev/shm
44 cgroup_root 10240 0 10240 0% /sys/fs/cgroup
45 none 1048576 0 1048576 0% /var/tmp/portage
46 vs5-dns ~ #
47
48 So it seems whenever chrooted bind/named is running, "/" simply
49 dissapeares from the list of mounted filesystem. Instead of it,
50 chrooted /var/log/named is listed. Is this correct behaviour???
51
52 This is a little problem for me, as I run monitoring software
53 which (appart from other things) check filesystems if they are
54 not close to being full. With bind/named running it complains
55 it can not find "/" in df output. I'd like to get my "/" back,
56 but I do not know how to do it...
57
58 Jarry
59 --
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Replies

Subject Author
Re: [gentoo-user] Bind stole my / Mike Gilbert <floppym@g.o>