owfs hangup on Linux 3.0.4 using DS28EC20 Dallas 1-wire EEPROM
Walter Lewis <wlewis569 <at> gmail.com>
2013-05-13 23:07:09 GMT
Greetings,
I am implementing a Maxim 1-Wire DS28EC20 EEPROM on an embedded Linux
application with the objective of writing identification information and
manufacturing data on a removable component. I have configured the kernel
for 1-Wire support, and have applied the patch for the w1-gpio module
implementation. When I insert the w1-gpio module, the /sys/bus/w1 directory
becomes present and the target EEPROM is reported. There is a file present
named rw which I can cat (looks binary), but when I pipe data to it, and
then read it back, it does not change. I suspect the block nature of the
device and its control mechanisms require a more sophisticated write
operation. I investigated the owfs which supports read and write on the
DS_2433 EEPROM, and am attempting to implement it. When I do not have the
device attached, using owfs, I can 'ls' the owfs mount point. When a device
is attached and the Linux w1 directory (/sys/bus/w1/...) shows it, a 'ls'
command on the owfs mount point causes the owfs application to become
unresponsive and the ls command never completes. owfs in background mode
does not respond to a control C and requires a kill -9 to stop, and once
stopped, the ownership and permissions of the owfs mountpoint appear
corrupted. A power cycle restores the mount point. owfs in forground mode
does respond to control C and leaves the ownership and permissions in a sane
state.
In order to isolate the problem, I have attempted this implementation using
owfs with the w1_kernel module and a file system mountpoint; owhttpd with
the w1 kernel module and a web page display; and with a owserver with w1
kernel module and a socket connection paired with a owhttpd server attached
to the socket connection and a web page display. None of these combinations
has solved the hang up condition and output is not to the file system or web
page. The 'looking for directory and directory not found' errors occur in
owfs, owhttpd and owserver when the component becomes visible to the kernel.
I have also tried this with DS2431 EEPROM with the same results.
Below is my system information. To get to the place where the error occurs,
search for: **** ERROR *** . Also, note that the looking for directory and
directory not found errors occur in owhttpd and owserver when the component
becomes visible to the kernel.
Thank you in advance for your help and assistance. Please let me know if
you need more information or have something you would like me to try.
Walter,
Details:
My target system is a Vendor's TI Omap 4460 based System On a Module,
running the omap linux kernel version 3.0.4 (uname -a: Linux <HOST>
3.4.0-1489-omap4 #26~Custom SMP PREEMPT Sat May 11 10:56:25 CDT 2013 armv7l
armv7l armv7l GNU/Linux. I cannot advance this kernel revision until our
Vendor supports a newer version. This is cross compiled from a Ubuntu
development system, (uname -a: Linux <host> 3.2.0-41-generic #66-Ubuntu SMP
Thu Apr 25 03:27:11 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux) with the
'arm-linux-gnueabihf' cross compiler.
My kernel configuration options are:
(1-Wire)
CONFIG_W1=m
CONFIG_W1_CON=y
CONFIG_W1_MASTER_DS1WM=m
CONFIG_W1_MASTER_DS2482=m
CONFIG_W1_MASTER_DS2490=m
CONFIG_W1_MASTER_GPIO=m
CONFIG_W1_SLAVE_BQ27000=m
CONFIG_W1_SLAVE_DS2408=m
CONFIG_W1_SLAVE_DS2423=m
CONFIG_W1_SLAVE_DS2431=m
CONFIG_W1_SLAVE_DS2433=m
# CONFIG_W1_SLAVE_DS2433_CRC is not set
CONFIG_W1_SLAVE_DS2760=m
CONFIG_W1_SLAVE_DS2780=m
# CONFIG_W1_SLAVE_DS2781 is not set
CONFIG_W1_SLAVE_SMEM=m
CONFIG_W1_SLAVE_THERM=m
(Fuse)
CONFIG_FUSE_FS=y
I installed owfs by:
Downloading from SourceForge, the latest version of owfs
(owfs-2.9p0.tar.gz), and copied it to the target system.
Logged in as root on the target system, I:
expanded the download package on the target system, ran configure, make,
and make install.
owfs was missing because the fuse.h file could not be found.
I ran apt-get install libfuse-dev
I deleted the unzipped owfs directory, and performed the installation
again. This was successful.
I inserted the w1 modules using modprobe. I have tried this with w1-gpio (+
wire); w1_ds2433 (+ wire); and w1_gpio and w1_ds2433 (+wire). According to
the Maxim datasheet, the DS28EC20 is highly backwards compatible with the
2433 part.
As described above, when the part is attached, the kernel shows the part's
presence, bit the owfs mount point hangs up when attempting to display it.
Case 1: owfs implementation
Kernel /sys/bus without modules does not include a w1 directory
Load modules ---
10.20.30.41:/tmp# modprobe w1_gpio
10.20.30.41:/tmp# modprobe w1_ds2433
10.20.30.41:/tmp# lsmod | grep w
w1_ds2433 2233 0
w1_gpio 1645 0
wire 26865 2 w1_ds2433,w1_gpio
Kernel /sys/bus after loading modules includes a w1 directory
10.20.30.41:/tmp# ls /sys/bus/w1
total 0
drwxr-xr-x 4 root root 0 May 13 19:32 .
drwxr-xr-x 21 root root 0 Jan 1 2000 ..
drwxr-xr-x 2 root root 0 May 13 19:32 devices
drwxr-xr-x 4 root root 0 May 13 19:32 drivers
-rw-r--r-- 1 root root 4.0K May 13 19:32 drivers_autoprobe
--w------- 1 root root 4.0K May 13 19:32 drivers_probe
--w------- 1 root root 4.0K May 13 19:32 uevent
10.20.30.41:/tmp# ls /sys/bus/w1/devices/
total 0
drwxr-xr-x 2 root root 0 May 13 19:32 .
drwxr-xr-x 4 root root 0 May 13 19:32 ..
lrwxrwxrwx 1 root root 0 May 13 19:33 w1_bus_master1 ->
../../../devices/w1_bus_master1
After attaching the 1-Wire EEPROM
10.20.30.41:/tmp# ls /sys/bus/w1/devices/
total 0
drwxr-xr-x 2 root root 0 May 13 19:32 .
drwxr-xr-x 4 root root 0 May 13 19:32 ..
lrwxrwxrwx 1 root root 0 May 13 19:34 43-0000003be97b ->
../../../devices/w1_bus_master1/43-0000003be97b
lrwxrwxrwx 1 root root 0 May 13 19:33 w1_bus_master1 ->
../../../devices/w1_bus_master1
Removed the 1-Wire EEPROM
owfs mount point without EEPROM present or owfs running
10.20.30.41:/tmp# ls /mnt
total 5.0K
drwxr-xr-x 5 root root 1.0K May 13 19:37 .
drwxr-xr-x 23 root root 1.0K May 13 11:33 ..
drwxr-xr-x 2 root root 1.0K Mar 31 19:35 jj
drwxr-xr-x 2 root root 1.0K Oct 9 2012 sda1
drwxr-xr-x 2 root root 1.0K May 13 14:31 w1
10.20.30.41:/tmp# ls /mnt/w1
total 2.0K
drwxr-xr-x 2 root root 1.0K May 13 14:31 .
drwxr-xr-x 5 root root 1.0K May 13 19:37 ..
Run owfs with debugging enabled
10.20.30.41:/tmp# owfs --foreground --error_level=9 --w1 -m /mnt/w1
CONNECT: owfs.c:(96) fuse mount point: /mnt/w1
CONNECT: ow_avahi_link.c:(68) No Avahi support. Library libavahi-client
couldn't be loaded
CONNECT: ow_dnssd.c:(82) Zeroconf/Bonjour is disabled since dnssd library
isn't found
CALL: ow_parsename.c:(98) path=[]
DEBUG: owlib.c:(81) Globals temp limits 0C 100C (for simulated adapters)
DEBUG: fuse_line.c:(82) Added FUSE option 0 OWFS
DEBUG: fuse_line.c:(82) Added FUSE option 1 /mnt/w1
DEBUG: fuse_line.c:(82) Added FUSE option 2 -o
DEBUG: fuse_line.c:(82) Added FUSE option 3 direct_io
DEBUG: fuse_line.c:(82) Added FUSE option 4 -f
DEBUG: fuse_line.c:(82) Added FUSE option 5 -d
DEBUG: owfs.c:(121) fuse_mnt_opt=[(null)]
DEBUG: owfs.c:(123) fuse_open_opt=[(null)]
DEBUG: ow_w1_list.c:(54) Sending w1 bus master list message
DEBUG: ow_w1_send.c:(132) Netlink send -----------------
NLMSGHDR: len=48 type=3 (NLMSG_DONE) flags=5 seq=0|1 pid=2921
CN_MSG: idx/val=3/1 (CN_W1_IDX) seq=0|1 ack=1 len=12 flags=0
W1_NETLINK_MSG: type=6 (W1_LIST_MASTERS) len=0 id=0
W1_NETLINK_CMD: NULL w1c field
NULL data
DEBUG: ow_w1_send.c:(143) NETLINK sent seq=1
DEBUG: ow_w1_dispatch.c:(173) Dispatch loop
DEBUG: ow_w1_parse.c:(113) Wait to peek at message
DEBUG: ow_w1_parse.c:(121) Pre-parse header: 16 bytes len=52 type=3
seq=0|1 pid=0
DEBUG: ow_w1_parse.c:(142) Netlink read -----------------
NLMSGHDR: len=52 type=3 (NLMSG_DONE) flags=0 seq=0|1 pid=0
CN_MSG: idx/val=3/1 (CN_W1_IDX) seq=0|1 ack=0 len=16 flags=12141
W1_NETLINK_MSG: type=6 (W1_LIST_MASTERS) len=4 id=1768713839
W1_NETLINK_CMD: NULL w1c field
Byte buffer Data, length=4
--000: 01 00 00 00
<....>
DEBUG: ow_w1_dispatch.c:(88) Netlink message directed to root W1 master
DEBUG: ow_w1_dispatch.c:(126) Sending this packet to root bus
DEBUG: ow_w1_dispatch.c:(173) Dispatch loop
DEBUG: ow_w1_parse.c:(113) Wait to peek at message
DEBUG: ow_w1_parse.c:(121) Pre-parse header: 16 bytes len=48 type=3
seq=0|1 pid=0
DEBUG: ow_w1_parse.c:(142) Netlink read -----------------
NLMSGHDR: len=48 type=3 (NLMSG_DONE) flags=0 seq=0|1 pid=0
CN_MSG: idx/val=3/1 (CN_W1_IDX) seq=0|1 ack=1 len=12 flags=0
W1_NETLINK_MSG: type=6 (W1_LIST_MASTERS) len=0 id=0
W1_NETLINK_CMD: NULL w1c field
NULL data
DEBUG: ow_w1_dispatch.c:(88) Netlink message directed to root W1 master
DEBUG: ow_w1_dispatch.c:(126) Sending this packet to root bus
DEBUG: ow_w1_dispatch.c:(173) Dispatch loop
DEBUG: ow_w1_parse.c:(113) Wait to peek at message
DEBUG: ow_w1_scan.c:(54) Netlink (w1) list all bus masters
DEBUG: ow_w1_list.c:(64) W1 List 0 masters
DEBUG: ow_w1_scan.c:(54) Netlink (w1) list all bus masters
DEBUG: ow_w1_list.c:(64) W1 List 1 masters
DEBUG: ow_w1_addremove.c:(55) Setup structure for w1_bus_master1
DEBUG: ow_w1_addremove.c:(80) Request master be added: w1_bus_master1.
DEBUG: ow_add_inflight.c:(26) Request master be added: w1_bus_master1
FUSE library version: 2.8.6
nullpath_ok: 0
unique: 1, opcode: INIT (26), nodeid: 0, insize: 56
INIT: 7.18
flags=0x0000047b
max_readahead=0x00020000
INIT: 7.12
flags=0x00000011
max_readahead=0x00020000
max_write=0x00020000
unique: 1, success, outsize: 40
owfs mount point without EEPROM present but with owfs running
10.20.30.41:/tmp# ls /mnt
total 4.0K
drwxr-xr-x 5 root root 1.0K May 13 19:37 .
drwxr-xr-x 23 root root 1.0K May 13 11:33 ..
drwxr-xr-x 2 root root 1.0K Mar 31 19:35 jj
drwxr-xr-x 2 root root 1.0K Oct 9 2012 sda1
drwxr-xr-x 1 root root 8 May 13 19:40 w1
Output from owfs during last command
unique: 2, opcode: GETATTR (3), nodeid: 1, insize: 56
getattr /
CALL: ow_fstat.c:(22) path=/
CALL: ow_parsename.c:(98) path=[/]
CALL: ow_fstat.c:(39) ATTRIBUTES path=/
DEBUG: ow_parsename.c:(62) /
unique: 2, success, outsize: 120
unique: 3, opcode: GETXATTR (22), nodeid: 1, insize: 65
unique: 3, error: -38 (Function not implemented), outsize: 16
10.20.30.41:/tmp# ls /mnt/w1
total 1.0K
drwxr-xr-x 1 root root 8 May 13 19:40 .
drwxr-xr-x 5 root root 1.0K May 13 19:37 ..
drwxr-xr-x 1 root root 8 May 13 19:40 bus.0
drwxr-xr-x 1 root root 8 May 13 19:40 bus.1
drwxr-xr-x 1 root root 8 May 13 19:40 settings
drwxr-xr-x 1 root root 8 May 13 19:40 statistics
drwxr-xr-x 1 root root 32 May 13 19:40 structure
drwxr-xr-x 1 root root 8 May 13 19:40 system
drwxr-xr-x 1 root root 8 May 13 19:40 uncached
Output from owfs during last command
unique: 4, opcode: GETATTR (3), nodeid: 1, insize: 56
getattr /
CALL: ow_fstat.c:(22) path=/
CALL: ow_parsename.c:(98) path=[/]
CALL: ow_fstat.c:(39) ATTRIBUTES path=/
DEBUG: ow_parsename.c:(62) /
unique: 4, success, outsize: 120
unique: 5, opcode: OPENDIR (27), nodeid: 1, insize: 48
unique: 5, success, outsize: 32
unique: 6, opcode: READDIR (28), nodeid: 1, insize: 80
getdir[0]
CALL: ow_parsename.c:(98) path=[/]
CALL: owfs_callback.c:(177) GETDIR path=/
DEBUG: ow_dir.c:(65) path=/
CALL: ow_dir.c:(100) path=/
DEBUG: ow_cache.c:(867) Looking for directory 00 00 00 00 00 00 00 00
DEBUG: ow_cache.c:(880) Get from cache sn 00 00 00 00 00 00 00 00
pointer=0xb6fa0790 extension=1
DEBUG: ow_cache.c:(909) Dir not found in cache
DEBUG: ow_search.c:(32) Start of directory path=/ device=00 00 00 00
00 00 00 00
DEBUG: ow_w1.c:(125) Sending w1 search (list devices) message
DEBUG: ow_w1_send.c:(132) Netlink send -----------------
NLMSGHDR: len=52 type=3 (NLMSG_DONE) flags=5 seq=1|1 pid=2921
CN_MSG: idx/val=3/1 (CN_W1_IDX) seq=1|1 ack=65537 len=16 flags=0
W1_NETLINK_MSG: type=4 (W1_MASTER_CMD) len=4 id=1
W1_NETLINK_CMD: cmd=2 (W1_CMD_SEARCH) len=0
NULL data
EBUG: ow_cache.c:(867) Looking for directory 00 00 00 00 00 00 00 00
DEBUG: ow_cache.c:(880) Get from cache sn 00 00 00 00 00 00 00 00
pointer=0xb6fa0790 extension=0
DEBUG: ow_cache.c:(909) Dir not found in cache
DEBUG: ow_w1_parse.c:(121) Pre-parse header: 16 bytes len=52 type=3
seq=1|1 pid=0
DEBUG: ow_w1_parse.c:(142) Netlink read -----------------
NLMSGHDR: len=52 type=3 (NLMSG_DONE) flags=0 seq=1|1 pid=0
CN_MSG: idx/val=3/1 (CN_W1_IDX) seq=1|1 ack=0 len=16 flags=0
W1_NETLINK_MSG: type=4 (W1_MASTER_CMD) len=4 id=1
W1_NETLINK_CMD: cmd=2 (W1_CMD_SEARCH) len=0
NULL data
DEBUG: ow_w1_dispatch.c:(92) Netlink message directed to W1 bus master 1
DEBUG: ow_w1_dispatch.c:(149) Sending this packet to w1_bus_master1
DEBUG: ow_w1_dispatch.c:(173) Dispatch loop
DEBUG: ow_w1_parse.c:(113) Wait to peek at message
DEBUG: ow_w1_parse.c:(121) Pre-parse header: 16 bytes len=52 type=3
seq=1|1 pid=0
DEBUG: ow_w1_parse.c:(142) Netlink read -----------------
NLMSGHDR: len=52 type=3 (NLMSG_DONE) flags=0 seq=1|1 pid=0
CN_MSG: idx/val=3/1 (CN_W1_IDX) seq=1|1 ack=65537 len=16 flags=0
W1_NETLINK_MSG: type=4 (W1_MASTER_CMD) len=4 id=1
W1_NETLINK_CMD: cmd=2 (W1_CMD_SEARCH) len=0
NULL data
DEBUG: ow_w1_dispatch.c:(92) Netlink message directed to W1 bus master 1
DEBUG: ow_w1_dispatch.c:(149) Sending this packet to w1_bus_master1
DEBUG: ow_w1_dispatch.c:(173) Dispatch loop
EBUG: ow_w1_parse.c:(113) Wait to peek at message
DEBUG: ow_w1_send.c:(143) NETLINK sent seq=1
DEBUG: ow_w1_parse.c:(225) Loop waiting for netlink piped message
DEBUG: ow_w1_parse.c:(163) Pipe header: len=52 type=3 seq=1|1 pid=0
DEBUG: ow_w1_parse.c:(191) Pipe read --------------------
NLMSGHDR: len=52 type=3 (NLMSG_DONE) flags=0 seq=1|1 pid=0
CN_MSG: idx/val=3/1 (CN_W1_IDX) seq=1|1 ack=0 len=16 flags=0
W1_NETLINK_MSG: type=4 (W1_MASTER_CMD) len=4 id=1
W1_NETLINK_CMD: cmd=2 (W1_CMD_SEARCH) len=0
NULL data
DEBUG: ow_w1_parse.c:(245) About to call nrs_callback
DEBUG: ow_w1_parse.c:(247) Called nrs_callback
DEBUG: ow_w1_parse.c:(225) Loop waiting for netlink piped message
DEBUG: ow_w1_parse.c:(163) Pipe header: len=52 type=3 seq=1|1 pid=0
DEBUG: ow_w1_parse.c:(191) Pipe read --------------------
NLMSGHDR: len=52 type=3 (NLMSG_DONE) flags=0 seq=1|1 pid=0
CN_MSG: idx/val=3/1 (CN_W1_IDX) seq=1|1 ack=65537 len=16 flags=0
W1_NETLINK_MSG: type=4 (W1_MASTER_CMD) len=4 id=1
W1_NETLINK_CMD: cmd=2 (W1_CMD_SEARCH) len=0
NULL data
DEBUG: ow_w1.c:(201) SN finished
CALL: ow_parsename.c:(98) path=[/bus.1]
DEBUG: ow_parsename.c:(62) /bus.1
CALL: ow_parsename.c:(98) path=[/bus.0]
DEBUG: ow_parsename.c:(62) /bus.0
CALL: ow_parsename.c:(98) path=[/uncached]
DEBUG: ow_parsename.c:(62) /uncached
CALL: ow_parsename.c:(98) path=[/settings]
DEBUG: ow_parsename.c:(62) /settings
CALL: ow_parsename.c:(98) path=[/system]
DEBUG: ow_parsename.c:(62) /system
CALL: ow_parsename.c:(98) path=[/statistics]
DEBUG: ow_parsename.c:(62) /statistics
CALL: ow_parsename.c:(98) path=[/structure]
DEBUG: ow_parsename.c:(62) /structure
DEBUG: ow_dir.c:(195) ret=0
DEBUG: ow_parsename.c:(62) /
unique: 6, success, outsize: 320
unique: 7, opcode: LOOKUP (1), nodeid: 1, insize: 46
LOOKUP /bus.1
getattr /bus.1
CALL: ow_fstat.c:(22) path=/bus.1
CALL: ow_parsename.c:(98) path=[/bus.1]
CALL: ow_fstat.c:(39) ATTRIBUTES path=/bus.1
DEBUG: ow_parsename.c:(62) /bus.1
NODEID: 2
unique: 7, success, outsize: 144
unique: 8, opcode: LOOKUP (1), nodeid: 1, insize: 46
LOOKUP /bus.0
getattr /bus.0
CALL: ow_fstat.c:(22) path=/bus.0
CALL: ow_parsename.c:(98) path=[/bus.0]
CALL: ow_fstat.c:(39) ATTRIBUTES path=/bus.0
DEBUG: ow_parsename.c:(62) /bus.0
NODEID: 3
unique: 8, success, outsize: 144
unique: 9, opcode: LOOKUP (1), nodeid: 1, insize: 49
LOOKUP /uncached
getattr /uncached
CALL: ow_fstat.c:(22) path=/uncached
CALL: ow_parsename.c:(98) path=[/uncached]
CALL: ow_fstat.c:(39) ATTRIBUTES path=/uncached
DEBUG: ow_parsename.c:(62) /uncached
NODEID: 4
unique: 9, success, outsize: 144
unique: 10, opcode: LOOKUP (1), nodeid: 1, insize: 49
LOOKUP /settings
getattr /settings
CALL: ow_fstat.c:(22) path=/settings
CALL: ow_parsename.c:(98) path=[/settings]
ALL: ow_fstat.c:(39) ATTRIBUTES path=/settings
DEBUG: ow_parsename.c:(62) /settings
NODEID: 5
unique: 10, success, outsize: 144
unique: 11, opcode: LOOKUP (1), nodeid: 1, insize: 47
LOOKUP /system
getattr /system
CALL: ow_fstat.c:(22) path=/system
CALL: ow_parsename.c:(98) path=[/system]
CALL: ow_fstat.c:(39) ATTRIBUTES path=/system
DEBUG: ow_parsename.c:(62) /system
NODEID: 6
unique: 11, success, outsize: 144
unique: 12, opcode: LOOKUP (1), nodeid: 1, insize: 51
LOOKUP /statistics
getattr /statistics
CALL: ow_fstat.c:(22) path=/statistics
CALL: ow_parsename.c:(98) path=[/statistics]
CALL: ow_fstat.c:(39) ATTRIBUTES path=/statistics
DEBUG: ow_parsename.c:(62) /statistics
NODEID: 7
unique: 12, success, outsize: 144
unique: 13, opcode: LOOKUP (1), nodeid: 1, insize: 50
LOOKUP /structure
getattr /structure
CALL: ow_fstat.c:(22) path=/structure
CALL: ow_parsename.c:(98) path=[/structure]
CALL: ow_fstat.c:(39) ATTRIBUTES path=/structure
DEBUG: ow_parsename.c:(62) /structure
NODEID: 8
unique: 13, success, outsize: 144
unique: 14, opcode: GETATTR (3), nodeid: 1, insize: 56
getattr /
CALL: ow_fstat.c:(22) path=/
CALL: ow_parsename.c:(98) path=[/]
CALL: ow_fstat.c:(39) ATTRIBUTES path=/
DEBUG: ow_parsename.c:(62) /
unique: 14, success, outsize: 120
unique: 15, opcode: READDIR (28), nodeid: 1, insize: 80
unique: 15, success, outsize: 16
unique: 16, opcode: RELEASEDIR (29), nodeid: 1, insize: 64
unique: 16, success, outsize: 16
Attaching the 1-wire EEPROM
output from owfs
DEBUG: ow_w1_parse.c:(121) Pre-parse header: 16 bytes len=48 type=3
seq=0|4 pid=0
DEBUG: ow_w1_parse.c:(142) Netlink read -----------------
NLMSGHDR: len=48 type=3 (NLMSG_DONE) flags=0 seq=0|4 pid=0
CN_MSG: idx/val=3/1 (CN_W1_IDX) seq=0|4 ack=0 len=12 flags=0
W1_NETLINK_MSG: type=0 (W1_SLAVE_ADD) len=0 id=1005157187
W1_NETLINK_CMD: NULL w1c field
NULL data
DEBUG: ow_w1_dispatch.c:(88) Netlink message directed to root W1 master
DEBUG: ow_w1_dispatch.c:(126) Sending this packet to root bus
DEBUG: ow_w1_dispatch.c:(173) Dispatch loop
DEBUG: ow_w1_parse.c:(113) Wait to peek at message
DEBUG: ow_w1_scan.c:(69) Netlink (w1) Slave announcements (ignored)
ls on owfs mountpoint - **** ERROR *** - no output, hanges
10.20.30.41:/tmp# ls /mnt/w1
Output from owfs during last command
unique: 17, opcode: GETATTR (3), nodeid: 1, insize: 56
getattr /
CALL: ow_fstat.c:(22) path=/
CALL: ow_parsename.c:(98) path=[/]
CALL: ow_fstat.c:(39) ATTRIBUTES path=/
DEBUG: ow_parsename.c:(62) /
unique: 17, success, outsize: 120
unique: 18, opcode: OPENDIR (27), nodeid: 1, insize: 48
unique: 18, success, outsize: 32
unique: 19, opcode: READDIR (28), nodeid: 1, insize: 80
getdir[0]
CALL: ow_parsename.c:(98) path=[/]
CALL: owfs_callback.c:(177) GETDIR path=/
DEBUG: ow_dir.c:(65) path=/
CALL: ow_dir.c:(100) path=/
DEBUG: ow_cache.c:(867) Looking for directory 00 00 00 00 00 00 00 00
DEBUG: ow_cache.c:(880) Get from cache sn 00 00 00 00 00 00 00 00
pointer=0xb6fa0790 extension=1
DEBUG: ow_cache.c:(867) Looking for directory 00 00 00 00 00 00 00 00
DEBUG: ow_cache.c:(880) Get from cache sn 00 00 00 00 00 00 00 00
pointer=0xb6fa0790 extension=0
DEBUG: ow_cache.c:(909) Dir not found in cache
DEBUG: ow_cache.c:(909) Dir not found in cache
DEBUG: ow_search.c:(32) Start of directory path=/ device=00 00 00 00
00 00 00 00
DEBUG: ow_w1.c:(125) Sending w1 search (list devices) message
DEBUG: ow_w1_send.c:(132) Netlink send -----------------
NLMSGHDR: len=52 type=3 (NLMSG_DONE) flags=5 seq=1|2 pid=2921
CN_MSG: idx/val=3/1 (CN_W1_IDX) seq=1|2 ack=65538 len=16 flags=0
W1_NETLINK_MSG: type=4 (W1_MASTER_CMD) len=4 id=1
W1_NETLINK_CMD: cmd=2 (W1_CMD_SEARCH) len=0
NULL data
------------------------------------------------------------------------------
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