From: "Lever, Charles" <Charles.Lever@netapp.com>
Subject: RE: mtab and procs not in sync?
Date: Wed, 9 Jun 2004 06:58:57 -0700
Sender: nfs-admin@lists.sourceforge.net
Message-ID: <482A3FA0050D21419C269D13989C61130435E230@lavender-fe.eng.netapp.com>
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Cc: <nfs@lists.sourceforge.net>
To: "James Pearson" <james-p@moving-picture.com>
Errors-To: nfs-admin@lists.sourceforge.net

as far as i can tell, the 4KB limit is common to x86 on 2.2 and 2.4.
2.6 has replaced the old /proc read method with seq_file, so i believe
/proc/mounts on 2.6 kernels will not suffer from this problem.

it's not a fixed number of mounts, because the length of each line in
/proc/mounts depends on what mount options are in effect.  the limit is
the number of characters in the file.

> -----Original Message-----
> From: James Pearson [mailto:james-p@moving-picture.com]=20
> Sent: Wednesday, June 09, 2004 6:29 AM
> To: Lever, Charles
> Cc: nfs@lists.sourceforge.net
> Subject: Re: [NFS] mtab and procs not in sync?
>=20
>=20
> Do you know how many 'a lot of mounts' is?
>=20
> I believe there was a problem with /proc/mounts in 2.2=20
> kernels (limited=20
> to one page) - is there still a limit in 2.4 or 2.6 kernels?
>=20
> I currently symlink /proc/mounts to /etc/mtab on diskless machines to=20
> get round the issue that /etc/mtab can not trusted to be=20
> correct. I only=20
> have a maximum of a few 10's of mounts at any one time.
>=20
> James Pearson
>=20
> Lever, Charles wrote:
> > if there are a lot of mounts on the system, then=20
> /proc/mounts can be=20
> > truncated and not show all of them.
> >=20
> > however, if there are more mounts in /proc/mounts than in=20
> /etc/mtab,=20
> > there is probably a bug in mount.  not unheard of.
> >=20
> >=20
> >>-----Original Message-----
> >>From: Phy Prabab [mailto:phyprabab@yahoo.com]
> >>Sent: Tuesday, June 08, 2004 2:21 PM
> >>To: nfs@lists.sourceforge.net
> >>Subject: [NFS] mtab and procs not in sync?
> >>
> >>
> >>Hello,
> >>
> >>Have run into a situation where mtab does not match /proc/mounts in=20
> >>that mtab has numerous entries that have expired off and=20
> removed, yet=20
> >>does not show that it has been removed from mtab.  Is this=20
> known and=20
> >>is there a fix?
> >>
> >>Kernel 2.4.21 and 23
> >>nfs-utils 1.06
> >>automount 4.1.2
> >>
> >>Thanks!
> >>Phy
> >>
> >>
> >>=09
> >>	=09
> >>__________________________________
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> >>Friends.  Fun.  Try the all-new Yahoo! Messenger.=20
> >>http://messenger.yahoo.com/
> >>
> >>
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> >=20
> >=20
> >=20
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> > Hackers Unite!  GUADEC: The world's #1 Open Source Desktop Event.=20
> > GNOME Users and Developers European Conference, 28-30th=20
> June in Norway=20
> > http://2004/guadec.org=20
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> >=20
>=20
>=20


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