From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Adam T. Bowen" Subject: Re: Question about inodes Date: Mon, 28 Jul 2008 11:15:14 +0100 Message-ID: <488D9C32.8030402@agitate.org.uk> References: <8f2fc6f50807280017y3e8d5625u1ab07c116133c20e@mail.gmail.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigA88197AF7929097A5A9CC5E7" Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from :user-agent:mime-version:to:subject:references:in-reply-to :x-enigmail-version:content-type:sender; bh=qoTcDIUhhKXaOHhmntCVTbgWJSdWsBsJGjK1k8Z0NW4=; b=PgL9v5EosrNPSiICcfXXoxqQloFXWcICcOqwFVOrdZ4zCUkbzItw2w9G9OXO/BMZKT 0u/VxqBtN5k/Su6n41Ygu4fWyLLI/H2YkWM4aSS2+pJMBoqcG4yx/l/kXkv3dAFvIyz4 tkPn+yEesMOn/8O/itWSrKBIISQGhAUrTbcjU= In-Reply-To: <8f2fc6f50807280017y3e8d5625u1ab07c116133c20e@mail.gmail.com> Sender: linux-admin-owner@vger.kernel.org List-ID: To: linux-admin@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigA88197AF7929097A5A9CC5E7 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: quoted-printable Hi Lars, If you are using devfs then /dev is a different file system (as=20 is /dev/pts if you are using devpts). Doing: df / /dev /dev/pts should show something like: Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda3 234361956 10748068 211516944 5% / - 996564 128 996436 1% /dev devpts 0 0 0 - /dev/pts Cheers Adam Lars wrote: > Hello! >=20 > I've always thought at indes as something uniq on every file on the > same file system. Today, I saw something weird that tickled my theory > about this. I found two folders, on the same filesystem that had the > same indoe. It is inode 1. Here is some info.. >=20 >=20 > [root@test ~]# ls -lid /sys > 1 drwxr-xr-x 11 root root 0 Jul 25 13:06 /sys >=20 > [root@test ~]# ls -lid /dev/pts > 1 drwxr-xr-x 2 root root 0 Jul 25 13:06 /dev/pts >=20 > [root@test ~]# df > Filesystem 1K-blocks Used Available Use% Mounted on > /dev/mapper/VolGroup00-LogVol00 > 36756152 2138060 32720828 7% / > /dev/hda1 101086 11818 84049 13% /boot > tmpfs 253652 0 253652 0% /dev/shm >=20 > [root@test ~]# ls /sys/ > block bus class devices firmware fs kernel module power >=20 > [root@test ~]# ls /dev/pts/ > 0 >=20 > [root@test ~]# stat /sys/ ; stat /dev/pts > File: `/sys/' > Size: 0 Blocks: 0 IO Block: 4096 directory > Device: 0h/0d Inode: 1 Links: 11 > Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ roo= t) > Access: 2008-07-28 07:51:41.543581362 -0100 > Modify: 2008-07-25 13:06:46.705937679 -0100 > Change: 2008-07-25 13:06:46.705937679 -0100 > File: `/dev/pts' > Size: 0 Blocks: 0 IO Block: 4096 directory > Device: bh/11d Inode: 1 Links: 2 > Access: (0755/drwxr-xr-x) Uid: ( 0/ root) Gid: ( 0/ roo= t) > Access: 2008-07-28 07:51:53.067829410 -0100 > Modify: 2008-07-25 13:06:46.707937375 -0100 > Change: 2008-07-25 13:06:46.707937375 -0100 >=20 > [root@larscen ~]# fdisk -l > Disk /dev/hda: 40.0 GB, 40020664320 bytes > 255 heads, 63 sectors/track, 4865 cylinders > Units =3D cylinders of 16065 * 512 =3D 8225280 bytes >=20 > Device Boot Start End Blocks Id System > /dev/hda1 * 1 13 104391 83 Linux > /dev/hda2 14 4865 38973690 8e Linux LVM >=20 > [root@test ~]# uname -a > Linux test 2.6.18-92.el5 #1 SMP Tue Jun 10 18:49:47 EDT 2008 i686 i686 > i386 GNU/Linux >=20 >=20 > As you see, both /sys and /dev/pts have the same inode. This is not an > issue, but a question. > I can see that the device is not the same on these two files/folders, > but they are on the same fs.. >=20 > I searched for a couple of more inodes (find / -inum NUMBER) to find > out that this is very common.. >=20 > The OS is centos5, but the same seems to be the case on debian. >=20 >=20 > Side question: How many % used inodes critical to much? I have a > server that have around 66% used inodes, > and wonder if I should do something or if I should let the problem fix = itself. >=20 > Thanks > Lars > -- > To unsubscribe from this list: send the line "unsubscribe linux-admin" = in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html --------------enigA88197AF7929097A5A9CC5E7 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFIjZwyfNJVASeK9ugRAqEnAJ9U5drRUvc59DXUEKO5FOVhx4m8IgCaA8Xq P1aEhOak1m240MyQvHrxpqI= =9u4S -----END PGP SIGNATURE----- --------------enigA88197AF7929097A5A9CC5E7--