NFS

Email Archive: nfs (read-only)

[NFS] rpc.mountd memory leak?

From: Albert Hopkins <marduk@le...> - 2007-03-18 20:10

I am using 1.0.12 of nfs-utils (linux/x86).  I have a problem in that
after a while rpc.mountd starts to eat up gobs of memory (sometimes >
1GB) and usually I am required to stop/restart NFS services to regain
memory.  I do not have many exported filesystems and very few clients
have anything mounted at a given time, so I'm not sure why it would need
as much memory so I'm guessing it's some kind of leak.  Please let me
know what I can do to debug this situation.

thanks
--
Albert W. Hopkins

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Thread	Author	Date
[NFS] rpc.mountd memory leak?	Albert Hopkins <marduk@le...>

Re: [NFS] rpc.mountd memory leak?

From: Neil Brown <neilb@su...> - 2007-03-18 22:25

On Sunday March 18, marduk@letterboxes.org wrote:
> I am using 1.0.12 of nfs-utils (linux/x86). I have a problem in that
> after a while rpc.mountd starts to eat up gobs of memory (sometimes >
> 1GB) and usually I am required to stop/restart NFS services to regain
> memory. I do not have many exported filesystems and very few clients
> have anything mounted at a given time, so I'm not sure why it would need
> as much memory so I'm guessing it's some kind of leak. Please let me
> know what I can do to debug this situation.

Known problem (fixed if you use debian-unstable).

Apparently there is a memory leak in libblkid which mounted now uses.

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=413661

There is also a smaller leak in mountd.

http://linux-nfs.org/cgi-bin/gitweb.cgi?p=nfs-utils;a=commitdiff;h=08964495c2a65f6228426e4565a50dae5b75834d

From: Steinar H. Gunderson <sgunderson@bigfoot.com>
Date: Fri, 16 Mar 2007 00:26:35 +0000 (+1100)
Subject: Fix memory leak in mountd.
X-Git-Url: http://linux-nfs.org/cgi-bin/gitweb.cgi?p=nfs-utils;a=commitdiff;h=08964495c2a65f6228426e4565a50dae5b75834d

Fix memory leak in mountd.

Signed-off-by: Neil Brown <neilb@suse.de>
---

--- a/support/export/client.c
+++ b/support/export/client.c
@@ -329,6 +329,7 @@ add_name(char *old, char *add)
strcat(new, ",");
strcat(new, cp);
}
+ free(old);
return new;
}

Maybe I should do a 1.0.13 which makes libblkid optional...
NeilBrown

NFS

Email Archive: nfs (read-only)

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