On Fri, 2006-11-03 at 15:22 -0600, Fletcher Mattox wrote: > I have also noticed corruption of /etc/mtab. Sometimes static mounts > just disappear from it during busy times. I assume this is some type > of race condition where file locking fails. I do not know if this is > the same problem or a different problem, but I thought I would mention it.
If you see this type of corruption then you need to check if mount(8) locking is broken or not and if the autofs package you are using has the locking at mount time disabled. Have a look at http://www.kernel.org/pub/linux/daemons/autofs/v4/autofs-4.1.4-configureable-locking.patch for more information. > > I do not know what causes such a high load of mount requests. But I see > them in the accounting files. Nothing obvious is going on when the errors > occur. They happen for several seconds at a time, 6-8 times per day. > > The NFS client is ubuntu 6.06 (dapper), kernel 2.6.17.4, automount 4.1.4. > The NFS server is a Network Appliances filer. > > Thanks, > Fletcher > > Nov 2 08:41:09 smtp automount[3862]: handle_child: got pid 15301, sig 0 (0), > stat 0 > Nov 2 08:41:09 smtp automount[3862]: sig_child: found pending iop pid 15301: > signalled 0 (sig 0), exit status 0 > Nov 2 08:41:09 smtp automount[3862]: send_ready: token=4324 > Nov 2 08:41:11 smtp automount[3862]: handle_packet: type = 0 > Nov 2 08:41:11 smtp automount[3862]: handle_packet_missing: token 4325, name > v2q007 > Nov 2 08:41:11 smtp automount[3862]: attempting to mount entry > /v/filer3/v2q007 > Nov 2 08:41:11 smtp automount[15326]: lookup(yp): looking up v2q007 > Nov 2 08:41:11 smtp automount[15326]: ret = 1 > Nov 2 08:41:11 smtp automount[15326]: lookup(yp): v2q007 -> > -intr,grpid,quota,retry=2^Ifiler3:/vol/vol2/v2q007 > Nov 2 08:41:11 smtp automount[15326]: parse(sun): expanded entry: > -intr,grpid,quota,retry=2^Ifiler3:/vol/vol2/v2q007 > Nov 2 08:41:11 smtp automount[15326]: parse(sun): > dequote("intr,grpid,quota,retry=2") -> intr,grpid,quota,retry=2 > Nov 2 08:41:11 smtp automount[15326]: parse(sun): gathered options: > tcp,rsize=8192,wsize=8192,intr,grpid,quota,retry=2 > Nov 2 08:41:11 smtp automount[15326]: parse(sun): > dequote("filer3:/vol/vol2/v2q007") -> filer3:/vol/vol2/v2q007 > Nov 2 08:41:11 smtp automount[15326]: parse(sun): core of entry: > options=tcp,rsize=8192,wsize=8192,intr,grpid,quota,retry=2, > loc=filer3:/vol/vol2/v2q007 > Nov 2 08:41:11 smtp automount[15326]: parse(sun): mounting root /v/filer3, > mountpoint v2q007, what filer3:/vol/vol2/v2q007, fstype nfs, options > tcp,rsize=8192,wsize=8192,intr,grpid,quota,retry=2 > Nov 2 08:41:11 smtp automount[15326]: mount(nfs): root=/v/filer3 name=v2q007 > what=filer3:/vol/vol2/v2q007, fstype=nfs, > options=tcp,rsize=8192,wsize=8192,intr,grpid,quota,retry=2 > Nov 2 08:41:11 smtp automount[15326]: mount(nfs): nfs > options="tcp,rsize=8192,wsize=8192,intr,grpid,quota,retry=2", nosymlink=0, > symlink=0, ro=0 > Nov 2 08:41:11 smtp automount[15326]: mount(nfs): is_local_mount: > filer3:/vol/vol2/v2q007 > Nov 2 08:41:11 smtp automount[15326]: mount(nfs): from > filer3:/vol/vol2/v2q007 elected filer3:/vol/vol2/v2q007 > Nov 2 08:41:11 smtp automount[15326]: mount(nfs): calling mkdir_path > /v/filer3/v2q007 > Nov 2 08:41:11 smtp automount[15326]: mount(nfs): calling mount -t nfs -s > -o tcp,rsize=8192,wsize=8192,intr,grpid,quota,retry=2 filer3:/vol/vol2/v2q007 > /v/filer3/v2q007 > Nov 2 08:41:11 smtp automount[15326]: >> mount: filer3:/vol/vol2/v2q007: > can't read superblock A message from mount, probably caused by the port exhaustion you described elsewhere. > Nov 2 08:41:11 smtp automount[15326]: mount(nfs): nfs: mount failure > filer3:/vol/vol2/v2q007 on /v/filer3/v2q007 > Nov 2 08:41:11 smtp automount[15326]: failed to mount /v/filer3/v2q007 > Nov 2 08:41:11 smtp automount[15326]: umount_multi: path=/v/filer3/v2q007 > incl=1 > Nov 2 08:41:11 smtp automount[15326]: umount_multi: no mounts found under > /v/filer3/v2q007 > > _______________________________________________ > autofs mailing list > [email protected] > http://linux.kernel.org/mailman/listinfo/autofs _______________________________________________ autofs mailing list [email protected] http://linux.kernel.org/mailman/listinfo/autofs
