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Info from Mathieu Segaud <matt@minas-morgul.org>
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scheme...
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KLIBC is used as an internal makefile variable, it expands to either
true or false right now. udev should use something else than KLIBC to
allow build against the latest and greatest klibc version.
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o change the parsing to get a key from the rule and sort it
into our list of known keys instead of expecting a special order
o the key to match a sysfs file must be prependend by 'SYSFS_' now
to match with the new parsing.
(The config must be changed, but it's a bit more descriptive too.)
o put names of fields in define's, like the name of the methods
o update all tests and the man page
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I guess we should run 'chkconfig --del udev' on removal to clear out the
now-stale udev entries, if any.
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Attached patch installs the initscript via 'make install' and adds it to
the RPM package. The RPM script then runs chkconfig(8) to setup the
initscript to run at the appropriate runlevels.
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* Make the HW-specific get_unique_id switch pretty
* Prepare to field-test by whitelisting all known fibre array, try to
fetch WWID from the standard EVPD 0x83 off 8 for everyone ... we will
learn from feedback :)
Could you drop a note with the udev-009 release-notes asking for testing
this WWID fetching thing ?
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Try this patch if you like, to get special parts of the callout output.
This beast works now:
CALLOUT, BUS="scsi", PROGRAM="/bin/echo -n node link1 link2", ID="node *", NAME="%1c", SYMLINK="%2c %3c"
The callout returned string is separated by spaces and is
addressed by the "len" value of the 'c' format char.
Since we support symlinks, this my be useful for other uses of callout too.
introduce 'len number' for format chars
the first use is 'c'-the callout return to select a part of the output string like:
CALLOUT, BUS="scsi", PROGRAM="/bin/echo -n node link1 link2", ID="node *", NAME="%1c", SYMLINK="%2c %3c"
(note: first part is requested by len=1, len=0 will return the whole string)
add a test to udev-test.pl
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remove possible newline at end of callout output,
for easier matching with ID=
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Change made by Rolf Eike Beer <eike-hotplug@sf-tec.de>
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adds /etc/init.d/udev to "make install"
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add /etc/init.d/udev to the SPEC-File and this way to the RPM
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I am sending you a pre-release patch. It's everything that's in our
current CVS tree. It adds the functionality you've been looking for. Please
play with this before checking it into your tree, I'd like to know if
it's ok with you or if you find problems. I have tested this out with
test.all and the perl regression test. Let me know what you think.
Still need to do more testing for our work and add some more functions
related to the changes.
I've gone into namedev.c and udev-add.c to make the necessary changes
in line with the library. I have not gone and edited any of the "extras".
Changes:
1) Libsysfs object structures work more as handles now, their included
directories or devices are labeled private. If you need attributes
from a sysfs_class_device, call the available function and don't access
the directory directly. Same holds true for a sysfs_class_device
sysfs_device. Do not access the link directly but call the function
sysfs_get_classdev_device() instead. We only populate entries upon
request, makes things faster and uses less memory.
2) Added sysfs_get_classdev_parent() as requested.
3) Changed getpagesize to sysconf.
4) Added sysfs_refresh_attributes function for refreshing views of
attribute lists. We still need to add refresh for links and subdirs. All
udev needs to do is keep calling sysfs_get_classdev_attr() and that will
internally call the refresh routine.
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udevdir is a define, but udev.conf has a hardcoded path. Maybe this
config file should be generated on the fly, like shown below.
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As usual, when the stuff gets in the tree - here is a small
man page update and a TODO line removal.
mention multiple symlinks
update example with silly symlink rule :)
shorten example line to have less than 80 chars
remove "want symlink support" from TODO
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* configure the multipath target with round-robin path selector and
conservative default for a start : yes it makes this release the first
really useful one.
* temporarily disable map creation for single path device due to current
restrictive defaults in the kernel target. Sistina should work it out.
* correct the strncmp logic in blacklist function.
Tested on StorageWorks with 2.6.0-test10-udm1 :
xa-s03:~# ./multipath -v
60001fe1000bdad0000903507109004b (1 0 1 1) /dev/sda op:1 /dev/sda
[HSG80 ]
60001fe1000bdad000090371312100bf (1 0 1 2) /dev/sdb op:1 /dev/sdb
[HSG80 ]
60001fe1000bdad000090371312100c2 (1 0 1 3) /dev/sdc op:1 /dev/sdc
[HSG80 ]
60001fe1000bdad00009037131210067 (1 0 2 1) /dev/sdd op:1 /dev/sdd
[HSG80 ]
60001fe1000bdad000090371312100b3 (1 0 2 2) /dev/sde op:1 /dev/sde
[HSG80 ]
60001fe1000bdad00009035071090024 (1 0 2 3) /dev/sdf op:1 /dev/sdf
[HSG80 ]
600508b4000156d700012000000b0000 (1 0 3 1) /dev/sdg op:1 /dev/sdg
[HSV110 (C)COMPAQ]
600508b4000156c30001200000210000 (1 0 3 2) /dev/sdh op:1 /dev/sdh
[HSV110 (C)COMPAQ]
600508b4000156d700012000000b0000 (1 0 6 1) /dev/sdi op:1 /dev/sdi
[HSV110 (C)COMPAQ]
600508b4000156c30001200000210000 (1 0 6 2) /dev/sdj op:1 /dev/sdj
[HSV110 (C)COMPAQ]
60001fe1000bdad0000903507109004b
\_(1 0 1 1) /dev/sda op:1 /dev/sda [HSG80 ]
60001fe1000bdad000090371312100bf
\_(1 0 1 2) /dev/sdb op:1 /dev/sdb [HSG80 ]
60001fe1000bdad000090371312100c2
\_(1 0 1 3) /dev/sdc op:1 /dev/sdc [HSG80 ]
60001fe1000bdad00009037131210067
\_(1 0 2 1) /dev/sdd op:1 /dev/sdd [HSG80 ]
60001fe1000bdad000090371312100b3
\_(1 0 2 2) /dev/sde op:1 /dev/sde [HSG80 ]
60001fe1000bdad00009035071090024
\_(1 0 2 3) /dev/sdf op:1 /dev/sdf [HSG80 ]
600508b4000156d700012000000b0000
\_(1 0 3 1) /dev/sdg op:1 /dev/sdg [HSV110 (C)COMPAQ]
\_(1 0 6 1) /dev/sdi op:1 /dev/sdi [HSV110 (C)COMPAQ]
600508b4000156c30001200000210000
\_(1 0 3 2) /dev/sdh op:1 /dev/sdh [HSV110 (C)COMPAQ]
\_(1 0 6 2) /dev/sdj op:1 /dev/sdj [HSV110 (C)COMPAQ]
N|600508b4000156d700012000000b0000 : 0 4194304 multipath 2 2 10
round-robin 2 /dev/sdg 10 2 1 2 /dev/sdi 10 2 1 2
N|600508b4000156c30001200000210000 : 0 20971520 multipath 2 2 10
round-robin 2 /dev/sdh 10 2 1 2 /dev/sdj 10 2 1 2
xa-s03:~# dmsetup ls
600508b4000156c30001200000210000 (254, 1)
600508b4000156d700012000000b0000 (254, 0)
xa-s03:~# ll /dev/mapper/
total 0
brw------- 1 root root 254, 1 Dec 9 22:57
600508b4000156c30001200000210000
brw------- 1 root root 254, 0 Dec 9 22:57
600508b4000156d700012000000b0000
crw------- 1 root root 10, 63 Jul 25 22:48 control
xa-s03:~# dd if=/dev/mapper/600508b4000156c30001200000210000
of=/dev/null bs=1M count=500
500+0 records in
500+0 records out
524288000 bytes transferred in 5.662530 seconds (92589003 bytes/sec)
gee, that pretty fast :)
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* update the Makefiles to autodetect libgcc.a & gcc includes
"ulibc-style". Factorisation of udevdirs & others niceties
* drop a hint about absent /dev/sd? on failed open() for poor Debian
users who don't imagine their favorite distro with only 16 preconfigured
SCSI device nodes :)
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Here is a patch to allow the creation of multiple symlinks.
The names must be separated by a space character.
REPLACE, KERNEL="ttyUSB0", NAME="visor", SYMLINK="first-%n second-%n third-%n"
results in:
Dec 9 05:28:51 pim udev[12019]: create_node: mknod(udev-root/visor, 020666, 188, 0)
Dec 9 05:28:51 pim udev[12019]: create_node: symlink 'udev-root/first-0' to node 'visor' requested
Dec 9 05:28:51 pim udev[12019]: create_node: symlink(./visor, udev-root/first-0)
Dec 9 05:28:51 pim udev[12019]: create_node: symlink 'udev-root/second-0' to node 'visor' requested
Dec 9 05:28:51 pim udev[12019]: create_node: symlink(./visor, udev-root/second-0)
Dec 9 05:28:51 pim udev[12019]: create_node: symlink 'udev-root/third-0' to node 'visor' requested
Dec 9 05:28:51 pim udev[12019]: create_node: symlink(./visor, udev-root/third-0)
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symlinks now working.
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remove "want symlinks" text from udev-add.c
mention SYMLINK in man page
man page format cleanup
man page example for SYMLINK
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it's still to hard to build on all systems.
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properly now.
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#ifdef crud from the main code.
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Attached is a patch against udev-008 to send out a D-BUS message when a
device node is added or removed.
Using D-BUS lingo, udev acquires the org.kernel.udev service and sends
out a NodeCreated or NodeDeleted signal on the
org.kernel.udev.NodeMonitor interface. Each signal carries two
parameters: the node in question and the corresponding sysfs path.
[Note: the D-BUS concepts of service, interface, object can be a bit
confusing at first glance]
An example program listening for these messages looks like this
#!/usr/bin/python
import dbus
import gtk
def udev_signal_received(dbus_iface, member, service, object_path, message):
[filename, sysfs_path] = message.get_args_list()
if member=='NodeCreated':
print 'Node %s created for %s'%(filename, sysfs_path)
elif member=='NodeDeleted':
print 'Node %s deleted for %s'%(filename, sysfs_path)
def main():
bus = dbus.Bus(dbus.Bus.TYPE_SYSTEM)
bus.add_signal_receiver(udev_signal_received,
'org.kernel.udev.NodeMonitor', # interface
'org.kernel.udev', # service
'/org/kernel/udev/NodeMonitor') # object
gtk.mainloop()
if __name__ == '__main__':
main()
and this is the output when hot-plugging some usb-storage.
[david@laptop udev-008]$ ~/node_monitor.py
Node /udev/sda created for /block/sda
Node /udev/sda1 created for /block/sda/sda1
Node /udev/sda1 deleted for /block/sda/sda1
Node /udev/sda deleted for /block/sda
The patch requires D-BUS 0.20 or later while the python example program
requires D-BUS from CVS as I only recently applied a patch against the
python bindings.
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> > here is a experimental symlink creation patch - for discussion,
> > in which direction we should go.
> > It is possible now to define SYMLINK= after the NAME= in udev.rules.
> > The link is relative to the node, but the path is not optimized now
> > if the node and the link are in the same nested directory.
> > Only one link is supported, cause i need to sleep now :)
> >
> > 06-simple-symlink-creation.diff
> > simple symlink creation
> > reorganized udev-remove to have access to the symlink field
> > subdir creation/removal are functions now
> > udev-test.pl tests for link creation/removal
Here is a new version with relative link target path optimization
an better tests in udev-test.pl:
LABEL, BUS="scsi", vendor="IBM-ESXS", NAME="1/2/a/b/node", SYMLINK="1/2/c/d/symlink"
Dec 7 06:48:34 pim udev[13789]: create_node: symlink 'udev-root/1/2/c/d/symlink' to node '1/2/a/b/node' requested
Dec 7 06:48:34 pim udev[13789]: create_path: created 'udev-root/1/2/c'
Dec 7 06:48:34 pim udev[13789]: create_path: created 'udev-root/1/2/c/d'
Dec 7 06:48:34 pim udev[13789]: create_node: symlink(../../a/b/node, udev-root/1/2/c/d/symlink)
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Here is an improved version of the patch that enables builds of the extras
progams for the targets all, clean, install, and uninstall, and passes
down the "prefix" for use by install and uninstall.
This patch enables building of the "extras" programs using the same build
environment as udev (i.e. build with udev's versions of klibc and
sysfsutils).
For example, build scsi_id and udev via:
make EXTRAS=extras/scsi_id
Build scsi_id and udev with klibc via:
make KLIBC=true EXTRAS=extras/scsi_id
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This patch updates scsi_id under udev from version 0.1 to version 0.2.
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* implement a reschedule flag in /var/run. Last thing the prog do before
exit is check if a call to multipath was done (but canceled by
/var/run/multipath.run check) during its execution. If so restart the
main loop.
* implement a blacklist of sysfs bdev to not bother with for now (hd,
md, dm, sr, scd, ram, raw). This avoid sending SG_IO to unappropiate
devices.
Compiles & survive "while true;do (./multipath -v &);done"
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* Adds a /var/run/multipath.run handling to avoid simultaneous runs.
* Remove a commented-out "printf"
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here is the next update which brings this multipath to the state i'm not
ashamed of it being in udev :)
* drop a libdevmapper copy in extras/multipath; maybe discussions w/
Sistina folks will bring a better solution in the future.
* drop a putchar usage in libdevmapper to compile cleanly with klibc
* drop another such usage of my own in main.c
* massage the Makefile to compile libdevmapper against klibc
* use "ld" to produce the binary rather than "gcc -static"
* stop being stupid w/ uneeded major, minor & dev in main.c:dm_mk_node()
* reverse to creating striped target for now because the multipath
target is more hairy than expected initialy
* push the version code to 009 to be in synch w/ udev
builds & run here.
binary size is 43ko, which is fairly gratifying after all the efforts
I've put to compiling it with klibc :)
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I've never seen any project where the documentation is in sync with the
code at this early stage. Nice! So here is the patch to make it extra perfect :)
remove random indent to be consistent
style is "shell style"
s/wildcard/pattern/
mention negation char in character class
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switch LABEL search to pattern match
add a test for pattern match in LABEL
remove useless rule from udev.rules
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While I was adding pattern match to the LABEL method i hit a bug.
We modify a string returned from libsysfs, so with every iteration is is
truncated by one char:
Dec 4 02:27:16 pim udev[23307]: do_label: dev->bus='scsi' sysfs_device->bus='scsi'
Dec 4 02:27:16 pim udev[23307]: do_label: look for device attribute 'vendor'
Dec 4 02:27:16 pim udev[23307]: do_label: xxx 'IBM-ESXS '
Dec 4 02:27:16 pim udev[23307]: do_label: compare attribute 'vendor' value 'IBM-ESX' with '?IBM-ESXS'
Dec 4 02:27:16 pim udev[23307]: do_label: dev->bus='scsi' sysfs_device->bus='scsi'
Dec 4 02:27:16 pim udev[23307]: do_label: look for device attribute 'vendor'
Dec 4 02:27:16 pim udev[23307]: do_label: xxx 'IBM-ESX'
Dec 4 02:27:16 pim udev[23307]: do_label: compare attribute 'vendor' value 'IBM-ES' with 'IBM-ESXS?'
Dec 4 02:27:16 pim udev[23307]: do_label: dev->bus='scsi' sysfs_device->bus='scsi'
Dec 4 02:27:16 pim udev[23307]: do_label: look for device attribute 'vendor'
Dec 4 02:27:16 pim udev[23307]: do_label: xxx 'IBM-ES'
Dec 4 02:27:16 pim udev[23307]: do_label: compare attribute 'vendor' value 'IBM-E' with 'IBM-ES??'
Dec 4 02:27:16 pim udev[23307]: do_label: dev->bus='scsi' sysfs_device->bus='scsi'
Dec 4 02:27:16 pim udev[23307]: do_label: look for device attribute 'vendor'
Dec 4 02:27:16 pim udev[23307]: do_label: xxx 'IBM-E'
Dec 4 02:27:16 pim udev[23307]: do_label: compare attribute 'vendor' value 'IBM-' with 'IBM-ESXSS'
I changed the behavior to remove only the line feed.
03-bug-in-linefeed-removal.diff
remove only the line feed from string not every last char
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