(note: I'm resending this because it apparently didn't reach the mailing list,
sorry if someone is getting it twice)
Hello,
After the update to 2.6.38, I noticed that AutoFS started to mount volumes
at times it normally wouldn't. More specifically, "ls -la" inside an AutoFS
mount point will trigger the mount of all available maps.
This can be reproduced with a simple indirect mount setup:
# cat /etc/auto.master
/data /etc/auto.data
# cat /etc/auto.data
isos -fstype=nfs4,ro,rsize=8192,wsize=8192,intr,nolock,nosuid libre:/isos
# egrep '(autofs|nfs4)' /proc/mounts
/etc/auto.data /data autofs rw,relatime,fd=7,pgrp=4300,timeout=600,minproto=5,\
maxproto=5,indirect 0 0
# stat -L /data/isos > /dev/null
# egrep '(autofs|nfs4)' /proc/mounts
/etc/auto.data /data autofs rw,relatime,fd=7,pgrp=4300,timeout=600,minproto=5,\
maxproto=5,indirect 0 0
libre:/isos /data/isos nfs4 ro,nosuid,relatime,vers=4,(.. more mount\
options ..) 0 0
Bisecting the changes between 2.6.37 and 2.6.38, I found that 2.6.38-rc1
exhibits the new behavior already. I went as near 2.6.37 as I could and verified
that commit b650c858c2 (autofs4: Merge the remaining dentry ops tables) also
shows the new behavior. I tried to bisect the remaining ~18 commits
but everything I tested/built ended up unbootable.
I also tested mainline and verified that the problem is still there.
Although everything points to a kernel change, I'm attaching debug logs from
the automounter, just in case it's useful to someone.
Thanks,
Leonardo
=== STARTUP
Mar 28 19:30:43 n63 automount[4389]: Starting automounter version 5.0.5, master
map auto.master
Mar 28 19:30:43 n63 automount[4389]: using kernel protocol version 5.02
Mar 28 19:30:43 n63 automount[4389]: lookup_nss_read_master: reading master
files auto.master
Mar 28 19:30:43 n63 automount[4389]: parse_init: parse(sun): init gathered
global options: (null)
Mar 28 19:30:43 n63 automount[4389]: lookup_read_master: lookup(file): read
entry /data
Mar 28 19:30:43 n63 automount[4389]: master_do_mount: mounting /data
Mar 28 19:30:43 n63 automount[4389]: automount_path_to_fifo: fifo name
/var/run/autofs.fifo-data
Mar 28 19:30:43 n63 automount[4389]: lookup_nss_read_map: reading map file
/etc/auto.data
Mar 28 19:30:43 n63 automount[4389]: parse_init: parse(sun): init gathered
global options: (null)
Mar 28 19:30:43 n63 automount[4389]: mounted indirect on /data with timeout
600, freq 150 seconds
Mar 28 19:30:43 n63 automount[4389]: st_ready: st_ready(): state = 0 path /data
Mar 28 19:30:43 n63 automount[4389]: ghosting enabled
=== COMMAND: stat -L /data/isos
Mar 28 19:31:18 n63 automount[4389]: handle_packet: type = 3
Mar 28 19:31:18 n63 automount[4389]: handle_packet_missing_indirect: token 1,
name isos, request pid 4398
Mar 28 19:31:18 n63 automount[4389]: attempting to mount entry /data/isos
Mar 28 19:31:18 n63 automount[4389]: lookup_mount: lookup(file): looking up isos
Mar 28 19:31:18 n63 automount[4389]: lookup_mount: lookup(file): isos ->
-fstype=nfs4,ro,rsize=8192,wsize=8192,intr,nolock,nosuid libre:/isos
Mar 28 19:31:18 n63 automount[4389]: parse_mount: parse(sun): expanded entry:
-fstype=nfs4,ro,rsize=8192,wsize=8192,intr,nolock,nosuid libre:/isos
Mar 28 19:31:18 n63 automount[4389]: parse_mount: parse(sun): gathered options:
fstype=nfs4,ro,rsize=8192,wsize=8192,intr,nolock,nosuid
Mar 28 19:31:18 n63 automount[4389]: parse_mount: parse(sun):
dequote("libre:/isos") -> libre:/isos
Mar 28 19:31:18 n63 automount[4389]: parse_mount: parse(sun): core of entry:
options=fstype=nfs4,ro,rsize=8192,wsize=8192,intr,nolock,nosuid, loc=libre:/isos
Mar 28 19:31:18 n63 automount[4389]: sun_mount: parse(sun): mounting root
/data, mountpoint isos, what libre:/isos, fstype nfs4, options
ro,rsize=8192,wsize=8192,intr,nolock,nosuid
Mar 28 19:31:18 n63 automount[4389]: mount_mount: mount(nfs): root=/data
name=isos what=libre:/isos, fstype=nfs4,
options=ro,rsize=8192,wsize=8192,intr,nolock,nosuid
Mar 28 19:31:18 n63 automount[4389]: mount_mount: mount(nfs): nfs
options="ro,rsize=8192,wsize=8192,intr,nolock,nosuid", nosymlink=0, ro=1
Mar 28 19:31:18 n63 automount[4389]: mount_mount: mount(nfs): calling
mkdir_path /data/isos
Mar 28 19:31:18 n63 automount[4389]: mount_mount: mount(nfs): calling mount -t
nfs4 -s -o ro,rsize=8192,wsize=8192,intr,nolock,nosuid libre:/isos /data/isos
Mar 28 19:31:18 n63 request-key: Cannot find command to construct key 33463049
Mar 28 19:31:18 n63 request-key: Cannot find command to construct key 481955300
Mar 28 19:31:18 n63 automount[4389]: mount_mount: mount(nfs): mounted
libre:/isos on /data/isos
Mar 28 19:31:18 n63 automount[4389]: dev_ioctl_send_ready: token = 1
Mar 28 19:31:18 n63 automount[4389]: mounted /data/isos
Mar 28 19:31:18 n63 automount[4389]: st_readmap: state 1 path /data
Mar 28 19:31:18 n63 automount[4389]: re-reading map for /data
Mar 28 19:31:18 n63 automount[4389]: lookup_nss_read_map: reading map file
/etc/auto.data
Mar 28 19:31:18 n63 automount[4389]: parse_init: parse(sun): init gathered
global options: (null)
Mar 28 19:31:18 n63 automount[4389]: st_ready: st_ready(): state = 4 path /data
Mar 28 19:31:21 n63 dhclient: XMT: Solicit on eth0, interval 113240ms.
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