Commit Graph

32 Commits

Author SHA1 Message Date
Pavel Snajdr 52c8537513
zpool_influxdb: move to libexec dir
Move the zpool_influxdb command to /usr/libexec/zfs,
and include the /usr/libexec/zfs path in the system search
directory when running the test suite.

Reviewed-by: Richard Elling <Richard.Elling@RichardElling.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Pavel Snajdr <snajpa@snajpa.net>
Closes #11156
Closes #11160
Closes #11224
2020-11-28 11:15:57 -08:00
Brian Behlendorf e4a3297a04
ZTS: Adopt OpenZFS test analysis script
Adopt and extend the OpenZFS ZTS results analysis script for use
with ZFS on Linux.  This allows for automatic analysis of tests
which may be skipped for a variety or reasons or which are not
entirely reliable.

In addition to the list of 'known' failures, which have been updated
for ZFS on Linux, there in a new 'maybe' section.  This mapping
include tests which might be correctly skipped depending on the
test environment.  This may be because of a missing dependency or
lack of required kernel support.  This list also includes tests
which normally pass but might on occasion fail for a harmless
reason.

The script was also extended include a reason for why a given test
might be skipped or may fail.  The reason will be included after
the test in the "results other than PASS that are expected" section.
For failures it is preferable to set the reason to the GitHub issue
number and for skipped tests several generic reasons are available.
You may also specify a custom reason if needed.

All tests were added back in to the linux.run file even if they are
expected to failed.  There is value in running tests which may not
pass, the expected results for these tests has been encoded in
the new analysis script.

All tests which were disabled because they ran more slowly on a
32-bit system have been re-enabled.  Developers working on 32-bit
systems should assess what it reasonable for their environment.

The unnecessary dependency on physical block devices was removed for
the checksum, grow_pool, and grow_replicas test groups so they are
no longer skipped.  Updated the filetest_001_pos test case to run
properly now that it is enabled and moved the grow tests in to a
single directory.

Reviewed-by: Prakash Surya <prakash.surya@delphix.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #7638
2018-06-20 14:03:13 -07:00
Brian Behlendorf c8f9061fc7 Retire legacy test infrastructure
* Removed zpios kmod, utility, headers and man page.

* Removed unused scripts zpios-profile/*, zpios-test/*,
  zpool-config/*, smb.sh, zpios-sanity.sh, zpios-survey.sh,
  zpios.sh, and zpool-create.sh.

* Removed zfs-script-config.sh.in.  When building 'make' generates
  a common.sh with in-tree path information from the common.sh.in
  template.  This file and sourced by the test scripts and used
  for in-tree testing, it is not included in the packages.  When
  building packages 'make install' uses the same template to
  create a new common.sh which is appropriate for the packaging.

* Removed unused functions/variables from scripts/common.sh.in.
  Only minimal path information and configuration environment
  variables remain.

* Removed unused scripts from scripts/ directory.

* Remaining shell scripts in the scripts directory updated to
  cleanly pass shellcheck and added to checked scripts.

* Renamed tests/test-runner/cmd/ to tests/test-runner/bin/ to
  match install location name.

* Removed last traces of the --enable-debug-dmu-tx configure
  options which was retired some time ago.

Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #6509
2017-08-15 17:26:38 -07:00
Giuseppe Di Natale c552fbc5f0 Enable shellcheck to run for select scripts
Enable shellcheck to run on zed scripts,
paxcheck.sh, zfs-tests.sh, zfs.sh, and zloop.sh.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Giuseppe Di Natale <dinatale2@llnl.gov>
Closes #5812
2017-03-09 10:20:15 -08:00
ka7 4e33ba4c38 Fix spelling
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov
Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov>>
Reviewed-by: George Melikov <mail@gmelikov.ru>
Reviewed-by: Haakan T Johansson <f96hajo@chalmers.se>
Closes #5547 
Closes #5543
2017-01-03 11:31:18 -06:00
Tom Caputi 0b04990a5d Illumos Crypto Port module added to enable native encryption in zfs
A port of the Illumos Crypto Framework to a Linux kernel module (found
in module/icp). This is needed to do the actual encryption work. We cannot
use the Linux kernel's built in crypto api because it is only exported to
GPL-licensed modules. Having the ICP also means the crypto code can run on
any of the other kernels under OpenZFS. I ended up porting over most of the
internals of the framework, which means that porting over other API calls (if
we need them) should be fairly easy. Specifically, I have ported over the API
functions related to encryption, digests, macs, and crypto templates. The ICP
is able to use assembly-accelerated encryption on amd64 machines and AES-NI
instructions on Intel chips that support it. There are place-holder
directories for similar assembly optimizations for other architectures
(although they have not been written).

Signed-off-by: Tom Caputi <tcaputi@datto.com>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #4329
2016-07-20 10:43:30 -07:00
Brian Behlendorf f74b821a66 Add `zfs allow` and `zfs unallow` support
ZFS allows for specific permissions to be delegated to normal users
with the `zfs allow` and `zfs unallow` commands.  In addition, non-
privileged users should be able to run all of the following commands:

  * zpool [list | iostat | status | get]
  * zfs [list | get]

Historically this functionality was not available on Linux.  In order
to add it the secpolicy_* functions needed to be implemented and mapped
to the equivalent Linux capability.  Only then could the permissions on
the `/dev/zfs` be relaxed and the internal ZFS permission checks used.

Even with this change some limitations remain.  Under Linux only the
root user is allowed to modify the namespace (unless it's a private
namespace).  This means the mount, mountpoint, canmount, unmount,
and remount delegations cannot be supported with the existing code.  It
may be possible to add this functionality in the future.

This functionality was validated with the cli_user and delegation test
cases from the ZFS Test Suite.  These tests exhaustively verify each
of the supported permissions which can be delegated and ensures only
an authorized user can perform it.

Two minor bug fixes were required for test-running.py.  First, the
Timer() object cannot be safely created in a `try:` block when there
is an unconditional `finally` block which references it.  Second,
when running as a normal user also check for scripts using the
both the .ksh and .sh suffixes.

Finally, existing users who are simulating delegations by setting
group permissions on the /dev/zfs device should revert that
customization when updating to a version with this change.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Tony Hutter <hutter2@llnl.gov>
Closes #362 
Closes #434 
Closes #4100
Closes #4394 
Closes #4410 
Closes #4487
2016-06-07 09:16:52 -07:00
Brian Behlendorf f00828e5d9 Add zfs-helpers.sh script
Add a script designed to facilitate in-tree development and testing
by installing symlinks on your system which refer to in-tree helper
utilities.  These helper utilities must be installed to in order to
exercise all ZFS functionality.  By using symbolic links and keeping
the scripts in-tree during development they can be easily modified
and those changes tracked.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes #4607
2016-05-10 11:28:54 -07:00
Brian Behlendorf 541a09016d Add zloop.sh test script
Add Chris Williamson's "new" zloop script so that it may be
intergated with ZoLs automated testing.  The original script may
be found in the openzfs-build repository on Github.

Minor modifications were made to the script so it can be run
directly from the ZoL source tree or from installed packages.

Additionally it was updated to use gdb instead of mdb to
extact debugging information from a core dump.

References:
  https://github.com/openzfs/openzfs-build/commit/7fb5d8b
  https://github.com/openzfs/openzfs-build/blob/master/ansible/roles/openzfs-jenkins-slave/files/usr/local/zloop.sh

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #4441
2016-03-23 16:12:25 -07:00
Brian Behlendorf 6bb24f4dc7 Add the ZFS Test Suite
Add the ZFS Test Suite and test-runner framework from illumos.
This is a continuation of the work done by Turbo Fredriksson to
port the ZFS Test Suite to Linux.  While this work was originally
conceived as a stand alone project integrating it directly with
the ZoL source tree has several advantages:

  * Allows the ZFS Test Suite to be packaged in zfs-test package.
    * Facilitates easy integration with the CI testing.
    * Users can locally run the ZFS Test Suite to validate ZFS.
      This testing should ONLY be done on a dedicated test system
      because the ZFS Test Suite in its current form is destructive.
  * Allows the ZFS Test Suite to be run directly in the ZoL source
    tree enabled developers to iterate quickly during development.
  * Developers can easily add/modify tests in the framework as
    features are added or functionality is changed.  The tests
    will then always be in sync with the implementation.

Full documentation for how to run the ZFS Test Suite is available
in the tests/README.md file.

Warning: This test suite is designed to be run on a dedicated test
system.  It will make modifications to the system including, but
not limited to, the following.

  * Adding new users
  * Adding new groups
  * Modifying the following /proc files:
    * /proc/sys/kernel/core_pattern
    * /proc/sys/kernel/core_uses_pid
  * Creating directories under /

Notes:
  * Not all of the test cases are expected to pass and by default
    these test cases are disabled.  The failures are primarily due
    to assumption made for illumos which are invalid under Linux.
  * When updating these test cases it should be done in as generic
    a way as possible so the patch can be submitted back upstream.
    Most existing library functions have been updated to be Linux
    aware, and the following functions and variables have been added.
    * Functions:
      * is_linux          - Used to wrap a Linux specific section.
      * block_device_wait - Waits for block devices to be added to /dev/.
    * Variables:            Linux          Illumos
      * ZVOL_DEVDIR         "/dev/zvol"    "/dev/zvol/dsk"
      * ZVOL_RDEVDIR        "/dev/zvol"    "/dev/zvol/rdsk"
      * DEV_DSKDIR          "/dev"         "/dev/dsk"
      * DEV_RDSKDIR         "/dev"         "/dev/rdsk"
      * NEWFS_DEFAULT_FS    "ext2"         "ufs"
  * Many of the disabled test cases fail because 'zfs/zpool destroy'
    returns EBUSY.  This is largely causes by the asynchronous nature
    of device handling on Linux and is expected, the impacted test
    cases will need to be updated to handle this.
  * There are several test cases which have been disabled because
    they can trigger a deadlock.  A primary example of this is to
    recursively create zpools within zpools.  These tests have been
    disabled until the root issue can be addressed.
  * Illumos specific utilities such as (mkfile) should be added to
    the tests/zfs-tests/cmd/ directory.  Custom programs required by
    the test scripts can also be added here.
  * SELinux should be either is permissive mode or disabled when
    running the tests.  The test cases should be updated to conform
    to a standard policy.
  * Redundant test functionality has been removed (zfault.sh).
  * Existing test scripts (zconfig.sh) should be migrated to use
    the framework for consistency and ease of testing.
  * The DISKS environment variable currently only supports loopback
    devices because of how the ZFS Test Suite expects partitions to
    be named (p1, p2, etc).  Support must be added to generate the
    correct partition name based on the device location and name.
  * The ZFS Test Suite is part of the illumos code base at:
    https://github.com/illumos/illumos-gate/tree/master/usr/src/test

Original-patch-by: Turbo Fredriksson <turbo@bayour.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Olaf Faaland <faaland1@llnl.gov>
Closes #6
Closes #1534
2016-03-16 13:46:16 -07:00
Brian Behlendorf 443c3f7332 Improve zfs.sh error messages
Ensure an error message is logged when the 'zfs.sh' script fails
to either load a module or if udev fails to create the /dev/zfs
device.  Error messages for missing KERNEL_MODULES are suppressed
because that functionality may just be built-in to the kernel.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2014-04-10 14:27:00 -07:00
Brian Behlendorf cc9ee13e1a Dynamically create loop devices
Several of the in-tree regression tests depend on the availability
of loop devices.  If for some reason no loop devices are available
the tests will fail.

Normally this isn't an issue because most Linux distributions create
8 loop devices by default.  This is enough for our purposes.  However,
recent Fedora releases have only been creating a single loop device
and this leads to failures.  Alternately, if something else of the
system is using the loop devices we may see failures.

The fix for this is to update the support scripts to dynamically
create loop devices as needed.  The scripts need only create a node
under /dev/ and the loop driver with create the minor.  This behavior
has been supported by the loop driver for ages.

Additionally this patch updates cleanup_loop_devices() to cleanup
loop devices which have already had their file store deleted.  This
helps prevent stale loop devices from accumulating on the system due
to test failures.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Prakash Surya <surya1@llnl.gov>
Closes #2249
2014-04-09 13:29:32 -07:00
Chris Dunlap 9e246ac3d8 Initial implementation of zed (ZFS Event Daemon)
zed monitors ZFS events.  When a zevent is posted, zed will run any
scripts that have been enabled for the corresponding zevent class.
Multiple scripts may be invoked for a given zevent.  The zevent
nvpairs are passed to the scripts as environment variables.

Events are processed synchronously by the single thread, and there is
no maximum timeout for script execution.  Consequently, a misbehaving
script can delay (or forever block) the processing of subsequent
zevents.  Plans are to address this in future commits.

Initial scripts have been developed to log events to syslog
and send email in response to checksum/data/io errors and
resilver.finish/scrub.finish events.  By default, email will only
be sent if the ZED_EMAIL variable is configured in zed.rc (which is
serving as a config file of sorts until a proper configuration file
is implemented).

Signed-off-by: Chris Dunlap <cdunlap@llnl.gov>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #2
2014-04-02 13:10:03 -07:00
Brian Behlendorf ba6a24026c Remove ZFC_IOC_*_MINOR ioctl()s
Early versions of ZFS coordinated the creation and destruction
of device minors from userspace.  This was inherently racy and
in late 2009 these ioctl()s were removed leaving everything up
to the kernel.  This significantly simplified the code.

However, we never picked up these changes in ZoL since we'd
already significantly adjusted this code for Linux.  This patch
aims to rectify that by finally removing ZFC_IOC_*_MINOR ioctl()s
and moving all the functionality down in to the kernel.  Since
this cleanup will change the kernel/user ABI it's being done
in the same tag as the previous libzfs_core ABI changes.  This
will minimize, but not eliminate, the disruption to end users.

Once merged ZoL, Illumos, and FreeBSD will basically be back
in sync in regards to handling ZVOLs in the common code.  While
each platform must have its own custom zvol.c implemenation the
interfaces provided are consistent.

NOTES:

1) This patch introduces one subtle change in behavior which
   could not be easily avoided.  Prior to this change callers
   of 'zfs create -V ...' were guaranteed that upon exit the
   /dev/zvol/ block device link would be created or an error
   returned.  That's no longer the case.  The utilities will no
   longer block waiting for the symlink to be created.  Callers
   are now responsible for blocking, this is why a 'udev_wait'
   call was added to the 'label' function in scripts/common.sh.

2) The read-only behavior of a ZVOL now solely depends on if
   the ZVOL_RDONLY bit is set in zv->zv_flags.  The redundant
   policy setting in the gendisk structure was removed.  This
   both simplifies the code and allows us to safely leverage
   set_disk_ro() to issue a KOBJ_CHANGE uevent.  See the
   comment in the code for futher details on this.

3) Because __zvol_create_minor() and zvol_alloc() may now be
   called in a sync task they must use KM_PUSHPAGE.

References:
  illumos/illumos-gate@681d9761e8

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ned Bass <bass6@llnl.gov>
Signed-off-by: Tim Chase <tim@chase2k.com>
Closes #1969
2013-12-16 09:15:57 -08:00
Brian Behlendorf 48c028f5a5 Replace libexecdir with datadir
According to the FHS.  Testing scripts and examples which are all
architecture independent should be installed in a subdirectory
under /usr/share.

  http://www.pathname.com/fhs/2.2/fhs-4.11.html

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2013-03-06 15:46:40 -08:00
Brian Behlendorf dbf763b39b Retire zpool_id infrastructure
In the interest of maintaining only one udev helper to give vdevs
user friendly names, the zpool_id and zpool_layout infrastructure
is being retired.  They are superseded by vdev_id which incorporates
all the previous functionality.

Documentation for the new vdev_id(8) helper and its configuration
file, vdev_id.conf(5), can be found in their respective man pages.
Several useful example files are installed under /etc/zfs/.

  /etc/zfs/vdev_id.conf.alias.example
  /etc/zfs/vdev_id.conf.multipath.example
  /etc/zfs/vdev_id.conf.sas_direct.example
  /etc/zfs/vdev_id.conf.sas_switch.example

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #981
2013-01-29 12:23:17 -08:00
Brian Behlendorf ff5b1c8065 Quiet mkfs.ext2 output
The -q option should quiet the mkfs.ext2 output but certain
versions of e2fsprogs appear to ignore it.  This can result in
an extra 'done' message in the test output.  To keep this noise
from distracting just direct stdout to /dev/null.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2013-01-28 15:36:02 -08:00
Brian Behlendorf 930b6fec21 Stop using /bin/ as a source in zconfig.sh
Test 5, 6, 7, and 7 in zconfig.sh use /bin/ as a source of random
directories and files for their test.  This has lead to unexpected
tests failures because the total size of /bin/ on the test system
isn't checked and it is entirely possible for it to be larger than
the target filesystem.

To resolve this issue we create a somewhat random collection of
files and directories in /var/tmp to use.  On average we expect
about 5MB of data with the worst case being 20MB.  This is large
enough to be interesting and small enough to always fit in the
default test datasets.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #1113
2013-01-28 14:51:26 -08:00
Brian Behlendorf 563103decd Fix test script error codes
The 'exit $?' command in the INT TERM EXIT trap was overwritting
the expected error code with the error code from mv.  Fix the
issue by removing the 'exit $?'.  It's important the we preserve
the original error code so failures are easily noticed.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2013-01-24 13:53:12 -08:00
Andrew Reid 6cb7ab069d Do not return /dev/loop-control in unused_loop_device
The function unused_loop_device in /usr/libexec/zfs/common.sh
returns /dev/loop-control on the first call. This device is NOT
a loop device (https://github.com/torvalds/linux/commit/770fe30)
it is a control device. This in turn causes the script zconfig.sh
to fail with:

  zpool-create.sh: Error 1 creating /tmp/zpool-vdev0 ->
  /dev/loop-control loopback

The patch makes the function return /dev/loop[0-9]* which are
loop devices.

Signed-off-by: Andrew Reid <ColdCanuck@nailedtotheperch.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #797
2012-10-15 10:02:42 -07:00
Etienne Dechamps 2f342404c1 Force 4K blocksize when testing ext2 on zvol.
Currently, mkfs.ext2 on zconfig.sh zvols tries to use a 8K blocksize,
probably because by default zvol exposes an optimal I/O size of 8K.

Unfortunately, a ext2 blocksize of 8K is not supported by the kernel,
so the resulting filesystem is unmountable.

This patch fixes the issue by making sure the blocksize is 4K. We have
to use -F to force it else mkfs.ext2 won't allow us to use a blocksize
smaller than the optimal I/O size.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #979
2012-10-03 10:52:51 -07:00
Brian Behlendorf 93648f314c Fix zconfig.sh non-optimal alignment
The recent zvol improvements have changed default suggested alignment
for zvols from 512b (default) to 8k (zvol blocksize).  Because of this
the zconfig.sh tests which create paritions are now generating a
warning about non-optimal alignments.

This change updates the need zconfig.sh tests such that a partition
will be properly aligned.  In the process, it shifts from using the
sfdisk utility to the parted utility to create partitions.  It also
moves the creation of labels, partitions, and filesystems in to
generic functions in common.sh.in.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2012-02-09 13:23:28 -08:00
Brian Behlendorf 5cbf6db937 Disable 90-zfs.rules for test suite
When running the zconfig.sh, zpios-sanity.sh, and zfault.sh
from the installed packages the 90-zfs.rules can cause failures.
These will occur because the test suite assumes it has full
control over loading/unloading the module stack.  If the stack
gets asynchronously loaded by the udev rule the test suite
will treat it as a failure.  Resolve the issue by disabling
the offending rule during the tests and enabling it on exit.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2011-10-11 14:45:37 -07:00
Brian Behlendorf 10715a0187 Add default stack checking
When your kernel is built with kernel stack tracing enabled and you
have the debugfs filesystem mounted.  Then the zfs.sh script will clear
the worst observed kernel stack depth on module load and check the worst
case usage on module removal.  If the stack depth ever exceeds 7000
bytes the full stack will be printed for debugging.  This is dangerously
close to overrunning the default 8k stack.

This additional advisory debugging is particularly valuable when running
the regression tests on a kernel built with 16k stacks.  In this case,
almost no matter how bad the stack overrun is you will see be able to
get a clean stack trace for debugging.  Since the worst case stack usage
can be highly variable it's helpful to always check the worst case usage.
2011-06-13 13:50:21 -07:00
Ned Bass fa417e57a6 Call udevadm trigger more safely
Some udev hooks are not designed to be idempotent, so calling udevadm
trigger outside of the distribution's initialization scripts can have
unexpected (and potentially dangerous) side effects.  For example, the
system time may change or devices may appear multiple times.  See Ubuntu
launchpad bug 320200 and this mailing list post for more details:

https://lists.ubuntu.com/archives/ubuntu-devel/2009-January/027260.html

To avoid these problems we call udevadm trigger with --action=change
--subsystem-match=block.  The first argument tells udev just to refresh
devices, and make sure everything's as it should be.  The second
argument limits the scope to block devices, so devices belonging to
other subsystems cannot be affected.

This doesn't fix the problem on older udev implementations that don't
provide udevadm but instead have udevtrigger as a standalone program.
In this case the above options aren't available so there's no way to
call call udevtrigger safely.  But we can live with that since this
issue only exists in optional test and helper scripts, and most
zfs-on-linux users are running newer systems anyways.
2011-04-05 13:00:51 -07:00
Brian Behlendorf cf47fad67d Unconditionally load core kernel modules
Loading and unloading the zlib modules as part of the zfs.sh
script has proven a little problematic for a few reasons.

  * First, your kernel may not need to load either zlib_inflate
    or zlib_deflate.  This functionality may be built directly in
    to your kernel.  It depends entirely on what your distribution
    decided was the right thing to do.

  * Second, even if you do manage to load the correct modules you
    may not be able to unload them.  There may other consumers
    of the modules with a reference preventing the unload.

To avoid both of these issues the test scripts have been updated to
attempt to unconditionally load all modules listed in KERNEL_MODULES.
If the module is successfully loaded you must have needed it. If
the module can't be loaded that almost certainly means either it is
built in to your kernel or is already being used by another consumer.
In both cases this is not an issue and we can move on to the spl/zfs
modules.

Finally, by removing these kernel modules from the MODULES list
we ensure they are never unloaded during 'zfs.sh -u'.  This avoids
the issue of the script failing because there is another consumer
using the module we were not aware of.  In other words the script
restricts unloading modules to only the spl/zfs modules.

Closes #78
2010-11-11 11:38:25 -08:00
Brian Behlendorf 0ee8118bd3 Add zfault zpool configurations and tests
Eleven new zpool configurations were added to allow testing of various
failure cases.  The first 5 zpool configurations leverage the 'faulty'
md device type which allow us to simuluate IO errors at the block layer.
The last 6 zpool configurations leverage the scsi_debug module provided
by modern kernels.  This device allows you to create virtual scsi
devices which are backed by a ram disk.  With this setup we can verify
the full IO stack by injecting faults at the lowest layer.  Both methods
of fault injection are important to verifying the IO stack.

The zfs code itself also provides a mechanism for error injection
via the zinject command line tool.  While we should also take advantage
of this appraoch to validate the code it does not address any of the
Linux integration issues which are the most concerning.  For the
moment we're trusting that the upstream Solaris guys are running
zinject and would have caught internal zfs logic errors.

Currently, there are 6 r/w test cases layered on top of the 'faulty'
md devices.  They include 3 writes tests for soft/transient errors,
hard/permenant errors, and all writes error to the device.  There
are 3 matching read tests for soft/transient errors, hard/permenant
errors, and fixable read error with a write.  Although for this last
case zfs doesn't do anything special.

The seventh test case verifies zfs detects and corrects checksum
errors.  In this case one of the drives is extensively damaged and
by dd'ing over large sections of it.  We then ensure zfs logs the
issue and correctly rebuilds the damage.

The next  test cases use the scsi_debug configuration to injects error
at the bottom of the scsi stack.  This ensures we find any flaws in the
scsi midlayer or our usage of it.  Plus it stresses the device specific
retry, timeout, and error handling outside of zfs's control.

The eighth test case is to verify that the system correctly handles an
intermittent device timeout.  Here the scsi_debug device drops 1 in N
requests resulting in a retry either at the block level.  The ZFS code
does specify the FAILFAST option but it turns out that for this case
the Linux IO stack with still retry the command.  The FAILFAST logic
located in scsi_noretry_cmd() does no seem to apply to the simply
timeout case.  It appears to be more targeted to specific device or
transport errors from the lower layers.

The ninth test case handles a persistent failure in which the device
is removed from the system by Linux.  The test verifies that the failure
is detected, the device is made unavailable, and then can be successfully
re-add when brought back online.  Additionally, it ensures that errors
and events are logged to the correct places and the no data corruption
has occured due to the failure.
2010-10-12 15:20:03 -07:00
Brian Behlendorf 2c4834f87a Wait up to timeout seconds for udev device
Occasional failures were observed in zconfig.sh because udev
could be delayed for a few seconds.  To handle this the wait_udev
function has been added to wait for timeout seconds for an
expected device before returning an error.  By default callers
currently use a 30 seconds timeout which should be much longer
than udev ever needs but not so long to worry the test suite
is hung.
2010-09-11 20:54:41 -07:00
Brian Behlendorf 6283f55ea1 Support custom build directories and move includes
One of the neat tricks an autoconf style project is capable of
is allow configurion/building in a directory other than the
source directory.  The major advantage to this is that you can
build the project various different ways while making changes
in a single source tree.

For example, this project is designed to work on various different
Linux distributions each of which work slightly differently.  This
means that changes need to verified on each of those supported
distributions perferably before the change is committed to the
public git repo.

Using nfs and custom build directories makes this much easier.
I now have a single source tree in nfs mounted on several different
systems each running a supported distribution.  When I make a
change to the source base I suspect may break things I can
concurrently build from the same source on all the systems each
in their own subdirectory.

wget -c http://github.com/downloads/behlendorf/zfs/zfs-x.y.z.tar.gz
tar -xzf zfs-x.y.z.tar.gz
cd zfs-x-y-z

------------------------- run concurrently ----------------------
<ubuntu system>  <fedora system>  <debian system>  <rhel6 system>
mkdir ubuntu     mkdir fedora     mkdir debian     mkdir rhel6
cd ubuntu        cd fedora        cd debian        cd rhel6
../configure     ../configure     ../configure     ../configure
make             make             make             make
make check       make check       make check       make check

This change also moves many of the include headers from individual
incude/sys directories under the modules directory in to a single
top level include directory.  This has the advantage of making
the build rules cleaner and logically it makes a bit more sense.
2010-09-08 12:38:56 -07:00
Brian Behlendorf 302ef1517e Add linux zpios support
Linux kernel implementation of PIOS test app.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2010-08-31 13:42:01 -07:00
Brian Behlendorf 325f023544 Add linux kernel device support
This branch contains the majority of the changes required to cleanly
intergrate with Linux style special devices (/dev/zfs).  Mainly this
means dropping all the Solaris style callbacks and replacing them
with the Linux equivilants.

This patch also adds the onexit infrastructure needed to track
some minimal state between ioctls.  Under Linux it would be easy
to do this simply using the file->private_data.  But under Solaris
they apparent need to pass the file descriptor as part of the ioctl
data and then perform a lookup in the kernel.  Once again to keep
code change to a minimum I've implemented the Solaris solution.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
2010-08-31 13:41:50 -07:00
Brian Behlendorf c9c0d073da Add build system
Add autoconf style build infrastructure to the ZFS tree.  This
includes autogen.sh, configure.ac, m4 macros, some scripts/*,
and makefiles for all the core ZFS components.
2010-08-31 13:41:27 -07:00