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# Date Author Comment
1fa2c40b 11/20/2012 07:51 pm Dimitris Aragiorgis

Fixes to pass py-apidoc (make commit-check)

Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

3c286190 11/20/2012 07:51 pm Dimitris Aragiorgis

Fixes to pass pep8 (make lint)

Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

beb81ea5 11/20/2012 07:51 pm Dimitris Aragiorgis

Fixes to pass pylint (make lint)

Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

6e8091f9 11/20/2012 07:51 pm Dimitris Aragiorgis

Fixes to pass unittests (make check)

Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

77aab207 11/20/2012 07:51 pm Dimitris Aragiorgis

Check for existing networks/groups in Network LUs

Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

8140e24f 11/20/2012 07:51 pm Dimitris Aragiorgis

Add tags in network objects

Support:
- gnt-network add --tags.
- gnt-network list-tags/add-tags/remove-tags/.
- gnt-network list -o +tags

Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

d5ed7dce 11/20/2012 07:51 pm Dimitris Aragiorgis

Change default fields for network listing

Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

09a3d21f 11/20/2012 07:51 pm Dimitris Aragiorgis

Pass detailed network info in hooks

Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

cbe4a0a5 11/20/2012 07:51 pm Dimitris Aragiorgis

Pass netinfo in rpcs

If a nic has a network field then encapsulate a network object in
netinfo slot for every rpc. This is needed to pass network info to
scripts managing nics (kvm-vif-bridge).

Introduce _BuildNetworkEnv().

Signed-off-by: Dimitris Aragiorgis <>...

58bf877f 11/20/2012 07:51 pm Dimitris Aragiorgis

cfgupgrade for networks

Add networks slot in config data.
Add networks slot in nodegroups.

Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

a0af6c80 11/20/2012 07:51 pm Dimitris Aragiorgis

Use network's mac prefix

Modify existing GenerateMAC so that it takes network as an argument.

Substitute _GenerateOneMAC with a decorator _GenerateMACPrefix that
chooses the prefix (network's or cluster's) and wraps
_GenerateMACSuffix that generates the three remaining bytes....

4e4b6b7a 11/20/2012 07:51 pm Apollon Oikonomopoulos

Include networks in Makefile and bash completion

Signed-off-by: Apollon Oikonomopoulos <>
Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

a04cc7a4 11/20/2012 07:51 pm Apollon Oikonomopoulos

Add gnt-network man page

Signed-off-by: Apollon Oikonomopoulos <>
Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

4588b4bd 11/20/2012 07:51 pm Dimitris Aragiorgis

Rapi support for networks

Support:
- GetNetwork(s)
- CreateNetwork
- ConnectNetwork
- DisconnectNetwork
- RemoveNetwork

Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

f2bd89b3 11/20/2012 07:51 pm Apollon Oikonomopoulos

ss_conf support for networks

Signed-off-by: Apollon Oikonomopoulos <>
Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

9c784fb3 11/20/2012 07:51 pm Dimitris Aragiorgis

Introduce client support for networks

gnt-network is used to manipulate and handle networks that currently
provides the following operations:

  • Add a new network:
    gnt-network add --network=1.2.3.0/28 --gateway=1.2.3.1
    --add-reserved-ips=1.2.3.4,1.2.3.5 testnet...
d4117a72 11/20/2012 07:51 pm Apollon Oikonomopoulos

Modify instance client to support networks

Add --no-conflicts-check option.
Modify instance query methods to return nic's network info.

Signed-off-by: Apollon Oikonomopoulos <>
Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

a5ad5e58 11/20/2012 07:51 pm Apollon Oikonomopoulos

Peripheral changes for networks

Specifically: * export a new environment variable for the gnt-os-interface * export a new environment variable for KVM specific scripts * ovf support for networks

Signed-off-by: Apollon Oikonomopoulos <>...

d1547283 11/20/2012 07:51 pm Dimitris Aragiorgis

Modify LUInstanceSetParams() to support networks

Keep backwards compatibility just like LUInstanceCreate() and support
network parameter for NIC object.

Add ec_id argument in Update() to be able to commit temporary IPs that
were previously reserved.

Signed-off-by: Dimitris Aragiorgis <>...

ced51149 11/20/2012 07:51 pm Dimitris Aragiorgis

Modify RemoveInstance() to support networks

Release any IPs held the instance before actually removing.

Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

e8e079f3 11/20/2012 07:51 pm Dimitris Aragiorgis

Modify LUInstanceCreate to support networks

Implement backend support, to export the IP pool management
functionality to the clients. When the new NIC parameter 'network' is
given, the ippool management system is triggered. If a NIC belongs to
a network, it inherits the netparams (mode, link) as its nicparams. If...

ad4a9ae7 11/20/2012 07:51 pm Dimitris Aragiorgis

Config methods for reserving/releasing IPs

Use TemporaryReservationManager for IP handling to ensure config data
consistency.

Implement:
- methods for reserving/releasing IPs
- _UnlockedCommitTemporaryIps()
- CheckIPInNodeGroup() used for conflicting IPs...

0fbd466b 11/20/2012 07:50 pm Dimitris Aragiorgis

Implement network/nodegroup mappings

LUNetworkConnect() connects a network to a nodegroup and defines
its netparams (mode and link). Specifically: * Check if network already exists * Check if netparams are valid * Check if already connected to the same nodegroup...

1e0d3321 11/20/2012 07:50 pm Dimitris Aragiorgis

Implement LUNetworkSetParams

Support modifying all network parameters except for network (ip
range). Cannot modify gateway and reserved ips at the same time.

Signed-off-by: Dimitris Aragiorgis <>
Reviewed-by: Iustin Pop <>

306bed0e 11/20/2012 07:50 pm Apollon Oikonomopoulos

Implement LUNetworkQuery

Summarily list all existing networks
Supply detailed info for every existing network
- List used/free IPs
- List instances with NICs assigned to the corresponding network
- List NIC index and IP for the above instances

Implement complementary config methods for retrieving networks....

6c0a75db 11/20/2012 07:50 pm Dimitris Aragiorgis

Basic IP pool management logic

Implement LUs for corresponding opcodes: * LUNetworkAdd:
- Check for IP validity
- Reserves all necessary IPs
- Create new Network config object * LUNetworkRemove:
- Checks if connected to any nodegroup
- Remove a Network config object...

1de1cf25 11/20/2012 07:50 pm Apollon Oikonomopoulos

Introduce new module for IP pool management

Add new library module lib/network.py.
Introduce new class: AddressPool.

AddressPool implements all operations needed for managing IPs inside
the IP pool.

Given a Network config object (nobj), the class:

  • initializes the corresponding IP pool object via...
eaa4c57c 11/20/2012 07:50 pm Dimitris Aragiorgis

IP pool related objects, opcodes and constants

Config objects: * Introduce L{Network} with
- IPv4 network field (mandatory)
- IPv4 gateway, IPv6 (network/gateway), mac prefix, type (optional) * Modify existing config objects to support networks:
- Add new slot 'network' to L{NIC} config object...

edb5a1c8 11/20/2012 05:39 pm Iustin Pop

Add more basic validation types

This mirrors the ht.py types PositiveInt, NonNegative, etc., except
that they work at a more generic level (any numeric type, respectively
any non-empty list).

Signed-off-by: Iustin Pop <>
Reviewed-by: Adeodato Simo <>

469a1490 11/20/2012 05:38 pm Iustin Pop

Fix a hlint warning

This is yet-another version-specific warning (fixed in later hlint
versions), but it's better to keep it clean.

Signed-off-by: Iustin Pop <>
Reviewed-by: Guido Trotter <>

a52f8e72 11/20/2012 01:02 pm Michele Tartara

Add DRBD parser unit tests

This adds tests that existing test files can be parsed by the Haskell
parser as well, plus one new test file.

Signed-off-by: Michele Tartara <>
Reviewed-by: Iustin Pop <>

3c1915df 11/20/2012 01:02 pm Michele Tartara

Add parser for DRBD /proc file

A new directory for haskell modules about block devices has been created
The parser is divided in two modules:
  • one exports the data types describing the DRBD status
  • one exports the parser itself

Signed-off-by: Michele Tartara <>...

1a865afe 11/20/2012 12:12 pm Iustin Pop

Properly log errors when setting up daemon FDs

While writing the pipe-based reporting and trying various ways to
break the startup, I fought for a while trying to understand why error
reporting was different when running the daemon as a user (with no
rights). It turns out that setupDaemonFDs wants to open the log file...

8ee2994a 11/20/2012 11:28 am Iustin Pop

Switch opcode data type from normal to record constructors

Currently, the OpCode definitions are using normal constructors:

data OpCode = OpTestDelay Double Bool [String]
            | OpInstanceFailover String Bool (Maybe String)

While this works for a few opcodes, it becomes unwieldy when dealing...

51d991d7 11/20/2012 11:26 am Iustin Pop

Fix docstrings for the Filter type

While looking at the opcode docs and clicking accidentally on the
filter type, I saw that the haddock formatting is broken due to
non-escaped use of special chars. Let's convert the ascii-like
formatting to haddock, and have nicer apidoc....

32f2e1e1 11/20/2012 11:26 am Iustin Pop

Simplify a few test helpers

Use more monadic combinators instead of explicit code.

Signed-off-by: Iustin Pop <>
Reviewed-by: Adeodato Simo <>

9ba02574 11/20/2012 11:25 am Iustin Pop

Add custom code for CV_E* constants to convert-constants

Currently, the cluster verify errors are defined as follows:

CV_ECLUSTER_FOO = (TCLUSTER, "ECLUSTER_FOO", "description")

This means there's no standalone name for the string "ECLUSTER_FOO",
which makes it hard to derive automatically a type for this union in...

e1ebbfcf 11/20/2012 11:25 am Iustin Pop

Improve error message for wrong opcode parameter values

When given an empty string as value to a parameter that doesn't accept
empty strings, the error message was confusing, since it was showing
just as a double space.

Signed-off-by: Iustin Pop <>...

2c9fa1ff 11/20/2012 11:16 am Iustin Pop

Cleanup ht's use of positive/strictpositive

Currently, ht.py uses a bad terminology for positive/non-negative
numbers. Per http://en.wikipedia.org/wiki/Positive_number, this is the
correct terminology:

- A number is positive if it is greater than zero.
- A number is negative if it is less than zero....

92f51573 11/20/2012 11:16 am Iustin Pop

Split OpCode.hs and add module for opcode parameters

Due to TemplateHaskell stage restrictions, we can't define parameters
in the same module as we're using them for TH, so we have to define
all module parameters in a separate module.

This patch therefore splits OpCodes.hs in two, adding that module and...

5e9deac0 11/20/2012 11:16 am Iustin Pop

Create a new Ganeti/Types.hs module

There are already three cases where we copied type definitions between
the htools-specific types into the main ganeti code. Let's stop doing
this ☺ and create a common types module that holds these.

Note that there already exists BasicTypes.hs, but that refers to very...

dc6296ff 11/19/2012 09:34 pm Michael Hanselmann

locking: Simplify condition

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Guido Trotter <>

52fca4ba 11/19/2012 05:28 pm Michael Hanselmann

configure: Shell cleanup

- Remote unnecessary quote characters
- Change some uses of “test "$foo"” to “test n "$foo"”
Merge “if/else/if” into “if/elif”
- Wrap lines longer than 80 characters and add a test to “make check”

Signed-off-by: Michael Hanselmann <>...

e4d745a7 11/19/2012 03:12 pm Michael Hanselmann

Add opcode for running commands remotely

The opcode doesn't pay attention to the build-time flag to enable or
disable restricted commands. In a cluster different nodes could have
different settings.

Node locks are acquired in shared mode by default, but the use of an...

db2203e0 11/19/2012 03:12 pm Michael Hanselmann

Add RPC for restricted commands

Expose the functionality to run restricted commands remotely via RPC.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Guido Trotter <>
Reviewed-by: Iustin Pop <>

03c5291c 11/19/2012 03:10 pm Michael Hanselmann

locking: Don't schedule pending acq. for short timeout

Scheduling a pending acquisition is relatively expensive and lot of code
is involved. Unless there is already one, a new pipe needs to be opened.
Data structures need to be updated as well, only to be undone shortly...

488a5b2e 11/19/2012 11:49 am Michele Tartara

Prevent hlint crash on unicode chars

Some versions of hlint crash on the Attoparsec test file because they
are not able to correctly handle unicode characters if the proper encoding
(--utf8) is not specified.

Signed-off-by: Michele Tartara <>...

7742b03c 11/16/2012 06:52 pm Michael Hanselmann

Rename design document for SSH setup

More design details will be added regarding setting up the node daemon,
so this is more about adding a node than just setting up SSH.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Iustin Pop <>

1a2eb2dc 11/16/2012 04:10 pm Michael Hanselmann

backend: Implement remote commands

As per design document (doc/design-remote-commands.rst), a number of
rather strict tests is applied to any incoming request, a delay is
inserted upon errors and returned error messages are very generic
(unless it's the actual command that failed). There are unit tests for...

9108958f 11/16/2012 04:09 pm Michael Hanselmann

configure: Add option to enable remote commands

By default remote commands are disabled and need to be explicitely
enabled at build time.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Iustin Pop <>

de959245 11/16/2012 03:57 pm Michael Hanselmann

Add unit test for RAPI handler access definitions

- Ensure query-related resources have the same access permissions
(specifically “/2/query/*” and “/2/*/console”)
- Check access permission consistency (write implies read)

Signed-off-by: Michael Hanselmann <>...

41f3d54d 11/16/2012 03:57 pm Michael Hanselmann

Update ganeti-rapi man page for new user option

Instead of duplicating what is already described in the full
documentation, a reference is added instead. Man pages can't use
constants or assertions, therefore it is easier for them to get out of
sync with the code....

5e12acfe 11/16/2012 03:57 pm Michael Hanselmann

rapi: Add new user option for querying

This was requested in issue 301. Before this patch, requests to
“/2/query/*” and “/2/instances/*/console” would require authentication
with a user with write access. Since that is not strictly necessary, a
new user option named “read” is added....

7b0476cf 11/16/2012 02:32 pm Michele Tartara

Add Utility functions for loading data from test files

They mimic their python counterparts.

Added functions:
  • getSourceDir
  • testDataFilename
  • readTestData
  • readPythonTestData

Signed-off-by: Michele Tartara <>
Reviewed-by: Iustin Pop <>

ff247692 11/16/2012 12:00 pm Michele Tartara

Improved TestHelper module docstring

Signed-off-by: Michele Tartara <>
Reviewed-by: Iustin Pop <>

f92ed8ab 11/15/2012 02:30 pm Michael Hanselmann

Move gnt_cluster.SHOW_MACHINE_OPT to cli

This allows the option to be re-used in other places.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Guido Trotter <>

17071597 11/15/2012 02:21 pm Guido Trotter

Add ganeti-node-role ocf example file

This allows offlining nodes that don't respond if they are part of a
linux-HA cluster.

Signed-off-by: Guido Trotter <>
Reviewed-by: Michael Hanselmann <>

aa75500a 11/15/2012 02:21 pm Guido Trotter

Add ganeti-master-role.ocf example file

This allows controlling the cluster master role if the nodes are part of
a linux-HA cluster.

Signed-off-by: Guido Trotter <>
Reviewed-by: Michael Hanselmann <>

32a569fe 11/15/2012 12:20 pm Iustin Pop

Cleanup THH function use from built module namespace

Currently, THH.hs "injects" into the built code names of library
functions like Text.JSON.makeObj, Ganeti.JSON.fromObj, etc. built
directly from strings, via (e.g.)

varE (mkName "makeObj")

This means that the "makeObj" name must exist in the target module,...

61899e64 11/14/2012 06:05 pm Iustin Pop

Switch Attoparsec/unicode test from QC to HUnit

This is not a quickcheck property, since it doesn't have any
variable/arbitrary inputs. So let's make it a test case, and shorten a
bit the name.

Also, sorry for not catching this in the review.

Signed-off-by: Iustin Pop <>...

bfbd12f7 11/14/2012 12:07 pm Michael Hanselmann

Warn on invalid lines in HTTP user files

Without this change, invalid lines or values would be silently ignored.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Guido Trotter <>

3e0b97b5 11/14/2012 10:44 am Michael Hanselmann

Don't check for remote command directory as file storage

This test does not work properly if localstatedir is not “/etc”.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Guido Trotter <>

fe8f80bd 11/14/2012 10:21 am Michael Hanselmann

Document master daemon's shutdown behaviour

This wasn't clearly documented until now.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Iustin Pop <>

df99f3a9 11/14/2012 10:16 am Michael Hanselmann

pathutils: Add directory for remote commands

Also add tests to ensure it's never allowed as a file storage path. A
constant for the lock file is also added.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Iustin Pop <>

2f18052f 11/14/2012 10:16 am Michael Hanselmann

utils.process.RunResult: Always set "fail_reason" attribute

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Iustin Pop <>

23b9930c 11/14/2012 10:15 am Michael Hanselmann

Add previously missing node daemon GID to getent mock

The UID is there, the GID wasn't.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Iustin Pop <>

ebfb2f46 11/14/2012 10:15 am Michael Hanselmann

Add test utility to count calls to function

In some cases it's nice to verify a function has been called exactly N
times. This is going to be used in tests for remote commands.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Iustin Pop <>

ecd11bb0 11/14/2012 02:38 am Michael Hanselmann

Sort content of generated RPC code

This is similar to commit f5ce761. A stable sort order makes changes
between versions easier to find.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Guido Trotter <>

105f0d47 11/13/2012 10:21 pm Michael Hanselmann

Add new test for RAPI

Unlike existing tests, this actually tests RAPI at the interface with
the HTTP server. This way authentification can also be tested. A test
for “/2/query/…” is included as it's a bit special.

Signed-off-by: Michael Hanselmann <>...

e9e07c9c 11/13/2012 09:28 pm Michael Hanselmann

Add “gnt-job change-priority” sub-command

This can be used to change the priority of a pending or running job (the
latter only if there are unprocessed opcodes).

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Bernardo Dal Seno <>

f63ffb37 11/13/2012 09:28 pm Michael Hanselmann

Expose changing job priority via LUXI

A new LUXI request is added, in both Python and Haskell.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Bernardo Dal Seno <>
Reviewed-by: Iustin Pop <>

4679547e 11/13/2012 09:20 pm Michael Hanselmann

jqueue: Allow changing of job priority

This is due to a feature request. Sometimes one wants to change the
priority of a job after it has been submitted, e.g. after submitting an
important job only to later notice many other pending jobs which will be
processed first. Priority changes only take effect at the next lock...

99fb250b 11/13/2012 09:20 pm Michael Hanselmann

jqueue: Set task ID for jobs added to workerpool

The job ID is re-used as the task ID, as job IDs are unique.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Bernardo Dal Seno <>

bba69414 11/13/2012 09:20 pm Michael Hanselmann

workerpool: Preserve task number when deferring

When a task is deferred it should receive the same task ID upon being
returned to the pool.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Bernardo Dal Seno <>

9a2564e7 11/13/2012 09:20 pm Michael Hanselmann

workerpool: Add method to change task's priority

Using the task ID a pending task's priority can be changed. This will be
used to change the priority of jobs in the workerpool.

Signed-off-by: Michael Hanselmann <>
Reviewed-by: Bernardo Dal Seno <>

125b74b2 11/13/2012 09:20 pm Michael Hanselmann

workerpool: Change data structure for priority change

To prepare for the addition of a new function allowing changing a
pending task's priority, the internal data structure is slightly
changed. The (optional) task ID is stored as part of the task entry. A...

39f0eea5 11/13/2012 03:42 pm Iustin Pop

Automatically enable version-dependent GHC flags

Some GHC flags are very useful, but only appear in more recent GHC
versions. To support the use of such flags while still supporting
older compilers, let's add conditional checks and enabling based on
the results....

43b3b5c1 11/13/2012 01:38 pm Michele Tartara

Added attoparsec unit test for Unicode parsing

Attoparsec is known to have had issues with parsing non-ASCII strings.
This test makes sure that parsing of Unicode characters works fine.

Signed-off-by: Michele Tartara <>
[iustin: small doc string fixes]...

35c6e63d 11/13/2012 11:42 am Michele Tartara

Add "Attoparsec" to the optional haskell packages

This will be needed for the data collectors of the monitoring agent.

  • Detection of the library
  • Creation of the appropriate variables
  • Update to the installation documentation

Signed-off-by: Michele Tartara <>...

e02ee261 11/13/2012 11:33 am Helga Velroyen

Documentation for the NODE_RES level

Signed-off-by: Helga Velroyen <>
Reviewed-by: Guido Trotter <>

6376dcc0 11/13/2012 10:29 am Iustin Pop

Improve make regen-vcs-version

"make regen-vcs-version" is run at every ./devel/upload time, in order
to have reasonably up-to-date information in the uploaded
scripts/binaries. However, this means it currently triggers
recompilation of (at least) Ganeti/Version.hs, and sometimes more than...

67e4fcf4 11/13/2012 10:28 am Iustin Pop

Fix two hlint warnings

Sorry, I broke lint again :), by introducing two sub-standard changes.

Additionally, this silences an older existing warning that only
triggers with some versions of hlint (e.g. 1.8.28 which is present in
Wheezy).

Signed-off-by: Iustin Pop <>...

09b72783 11/12/2012 06:51 pm Michael Hanselmann

RunCmd: Expose "postfork" callback

The “_postfork_fn” parameter was only used for tests until now. To
implement a good locking scheme, remote commands must also make use of
this callback to release a lock when the command was successfully
started (but did not yet finish)....

551a29df 11/12/2012 06:17 pm Iustin Pop

Merge branch 'devel-2.6' into master

  • devel-2.6:
    Improve error message when migration status fail
    Fix type error in kvm/GetMigrationStatus
    Fix PID file writing in Haskell daemons

Conflicts (both trivial):
htools/Ganeti/Daemon.hs (_writePidFile rename)...

112b6e89 11/12/2012 06:05 pm Iustin Pop

Merge branch 'stable-2.6' into devel-2.6

  • stable-2.6:
    Improve error message when migration status fail
    Fix type error in kvm/GetMigrationStatus
    Fix PID file writing in Haskell daemons

Signed-off-by: Iustin Pop <>
Reviewed-by: Guido Trotter <>

4041a4e3 11/12/2012 03:14 pm Iustin Pop

Improve error message when migration status fail

Commit 6a1434d7 (“Make migration RPC non-blocking”) changed the API
for reporting migration status, but has a small cosmetic bug: if the
migration status if failure, but the RPC itself to get the status
didn't fail, it shows the following error message:...

62457f51 11/12/2012 03:13 pm Iustin Pop

Fix type error in kvm/GetMigrationStatus

Commit 6a1434d7 (“Make migration RPC non-blocking”) changed from
raising HypervisorErrors to returning MigrationStatus
objects. However, these objects don't have an "info" attribute, so
they can't pass a reason back (which is in itself a bug); but the KVM...

a4c0fe1e 11/12/2012 01:29 pm Iustin Pop

Fix PID file writing in Haskell daemons

Currently, the code uses createFile, which has the effect of always
truncating the file. This is bad, as the content of the PID file is
wiped even when we wouldn't be able to lock it!

We switch to openFd (createFile is just a wrapper over that), and we...

29a30533 11/12/2012 01:21 pm Iustin Pop

Remove unsafePerformIO usage

We need to change a few things, most importantly CLI options defaults,
but otherwise we already used the path to files from functions which
were already in the I/O monad, so we don't have to change much of the
code flow.

Additionally, Path.hs now has an explicit export list, to stop...

37904802 11/12/2012 01:21 pm Iustin Pop

Change keyToFilename/readSSconfFile interaction

Currently, keyToFilename uses itself the default config path. In the
light of making that an function in the IO monad, let's remove the
"default" path functionality from this function and make it always
require the config path; its caller, readSSConfFile, can then do the...

d66aa238 11/12/2012 01:19 pm Iustin Pop

Change type of program options to 'IO [Options]'

Some options have defaults that depend on the environment, and we
could handle these in two ways:

- use a place-holder value (e.g. data X a = Default | Custom a) that
is later read from the environment
- move the options list to IO monad, where it can read the...

48483a2e 11/12/2012 12:02 pm Iustin Pop

Two small logging improvements

The "starting" message is changed to match the Python one, and in case
the preparation fails, we also log the error (beside printing it on
stderr or writing it to the error reporting pipe), as at this time
logging is usually set up....

73b16ca1 11/12/2012 12:02 pm Iustin Pop

Annotate confd startup/luxi binding error

The luxi binding is now annotated for better readability.

Signed-off-by: Iustin Pop <>
Reviewed-by: Michael Hanselmann <>

e14b84e9 11/12/2012 12:02 pm Iustin Pop

Switch writing of PID file to new reporting style

Currently, the writing of the PID file uses a "standard" error
reporting: catch exception, transform it into a 'Result' type, leave
handling of that to the caller. However, for daemon startup, we
actually want exceptions to be propagated up until the handler which...

7413b229 11/12/2012 12:02 pm Iustin Pop

Move and rename BasicTypes.annotateIOError

It turns out that annotateIOError already exists in the standard
library, with a different purpose (this made me waste 10 minutes
trying to understand why the types were wrong…). Let's move this out
of BasicTypes, since it's used only in Daemon.hs, and also rename it....

b9097468 11/12/2012 12:02 pm Iustin Pop

Switch daemon startup to pipe-based error reporting

This changes the daemon reporting error to the same mechanism as in
Python: use a pipe which is written to from the forked children.

Signed-off-by: Iustin Pop <>
Reviewed-by: Michael Hanselmann <>

ef3de7b0 11/12/2012 12:02 pm Iustin Pop

Move preparation steps of confd in prepMain

This does the address parsing earlier, before we fork, for
better/faster error reporting.

Signed-off-by: Iustin Pop <>
Reviewed-by: Michael Hanselmann <>

4c3f55b8 11/12/2012 12:02 pm Iustin Pop

Split queryd run into prepare and exec

This will help with the general daemon split of prepare/run, and flag
errors earlier in the startup.

Signed-off-by: Iustin Pop <>
Reviewed-by: Michael Hanselmann <>

d8e7c45e 11/12/2012 12:00 pm Iustin Pop

Convert tag objects to a safer type

Currently, we keep information about the "target" of a tag operation
in a data type similar to (TagKind, Maybe String). This is unsafe, as
nothing (at the type level) prevents us from accidentally having
(TagCluster, Just "instance1.example.com"), or (TagInstance, Nothing)....

88609f00 11/12/2012 11:44 am Iustin Pop

Switch Luxi TH code from simple to custom fields

This is needed so that we have more flexibility in generating Luxi
serialisation code (deserialisation is still custom). Also, only
exceptions are now using the 'simple' field types, so we might be able
later to convert and remove that TH code as well....