similar to: Communicating Worker-to-Worker

Hi Eric, There's a memory leak in the nbd client. The message (below) is not very useful because somehow debuginfo is missing in the plugin. However it's easily reproducible by doing: make check-valgrind TESTS=test-nbd I tried the attached patch to fix what I thought was the bug, but sadly the fix doesn't work for me :-( So I guess something else is going on, but it does look as

Patch 2 certainly allows you to set the thread model. However patch 3 shows that if you set it to nbdkit.THREAD_MODEL_PARALLEL it will crash. If you look closely at the stack trace (attached below) you can see that ignoring threads which are in parts of nbdkit unrelated to Python: Thread 4: In pread, waiting in time.sleep(). This thread has released the GIL. Thread 2: Started to

Hi, I''m brand new to BackgrounDRb and trying to figure out the setup. I cloned the git repository today as listed on the BackgrounDRb website. Starting out with a very basic worker, but BackgroundDRb is crashing on a NameError. Any help to resolve this issue would be greatly appreciated! Thank you in advance!! I am also attaching a text file with the output below since it might be

For GCC only, define unlikely() macro. Use it on error paths to move code out of the hot path. In the server only, use the debug() macro (don't call nbdkit_debug directly). This macro checks the verbose flag and moves the call to nbdkit_debug out of the hot path. --- server/connections.c | 11 ++++++----- server/internal.h | 17 ++++++++++++++++- server/plugins.c | 2 +-

Hi Folks, I am glad to announce 1.0 release of BackgrounDRb. This would be a major release since 0.2 release of BackgrounDRb. Here is a brief summary of changes: - BackgrounDRb is DRb no longer. It makes use of EventDriven network programming library packet ( http://packet.googlecode.com ). - Since we moved to packet, many nasty thread issues, result hash corruption issues are totally

This fixes the long-standing crash on close when nbdkit exits. I did try first to fix threads so we're using a proper thread pool, but that's difficult to implement. So this does the minimal change needed to fix the crash instead. There are still two segfaults that happen during running the test suite. One is deliberately caused (tests/test-captive.sh). The other appears to be an

I'm fairly sure that these bugs which appear in the Python plugin: https://bugzilla.redhat.com/show_bug.cgi?id=1566516 https://bugzilla.redhat.com/show_bug.cgi?id=1566522 are really bugs in the SERIALIZE_ALL_REQUESTS thread model. See the first patch for the full explanation. The second patch is a fix for a race condition which is probably nudged into being by the first patch. Now this

This is a question regarding ActiveRecord outside of Rails. I have several databases that have absolutely identical table structure. I have a ActiveRecord::Base.establish_connection( :adapter => "mysql", :host => "localhost", :username => "user", :password => "password", :database

When converting from a single transaction to a linked list, I forgot to free the storage for each member of the list. Reported-by: Richard W.M. Jones <rjones at redhat.com> Fixes: 7f5bb9bf13f041ea7702bda557d9dd668bc3423a Signed-off-by: Eric Blake <eblake at redhat.com> --- I'm still not sure why 'make check' passes while 'make check-valgrind' fails for

Print a better error message when the non-root user on the conversion server requires a password to use sudo, and p2v is told to use sudo. See also RHZ#1340809. --- p2v/ssh.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/p2v/ssh.c b/p2v/ssh.c index 76a6827..97d76ae 100644 --- a/p2v/ssh.c +++ b/p2v/ssh.c @@ -97,6 +97,7 @@ static void free_regexps (void) __attribute__((destructor));

I want to make my nbd forwarding plugin fully parallel - but to do that, I first need to make nbdkit itself fully parallel ;) With this series, I was finally able to demonstrate out-of-order responses when using qemu-io (which is great at sending back-to-back requests prior to waiting for responses) coupled with the nbd file plugin (which has a great feature of rdelay and wdelay, to make it

Run sudo with -n (non-interactive), so it will fail right away when not configured to not require a password. This will avoid the connection to time out. --- p2v/ssh.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/p2v/ssh.c b/p2v/ssh.c index b432cbd..c6bf306 100644 --- a/p2v/ssh.c +++ b/p2v/ssh.c @@ -490,7 +490,7 @@ test_connection (struct config *config) */ if

On Sat, Dec 02, 2017 at 11:52:31AM -0600, Eric Blake wrote: > When converting from a single transaction to a linked list, I > forgot to free the storage for each member of the list. > > Reported-by: Richard W.M. Jones <rjones at redhat.com> > Fixes: 7f5bb9bf13f041ea7702bda557d9dd668bc3423a > Signed-off-by: Eric Blake <eblake at redhat.com> > --- > > I'm

When testing if sudo -n requires a password, we tested for the prompt earlier than testing for the magic sudo message ‘a password is required’. Since the shell will print the prompt just after the sudo message: prompt$ sudo -n virt-v2v --version sudo: a password is required prompt$ the prompt nearly always matched and we missed the magic sudo message. (The exception is in the case where

Hi all. Recently I was looking for an IMAP-server with Oracle support and unfortunatelly I couldn't find one. It was a surprise for me but there is no such functionality at all. So I've chosen an IMAP-server with most flexible and convinient architecture that was Dovecot-1.2.9 and written a driver for Oracle RDBMS support. I used Oracle Pro*C so a Pro*C preprocessor is needed to

Hello, I want to scan many URLs simultaneously with a new scanner worker for each URL, but I keep getting Mysql::Error: Lost connection to MySQL. Yes, allow_concurrency=false. Each scanner thread needs access to my ActiveRecord models to store discovered feeds and whatnot. There is a DB table called page_scans that acts as a big queue holding URLs waiting to be scanned. It would be

Hi all, We have a few workers that kick off at scheduled intervals or to do some user driven long running tasks asynchronously. At the moment when the workers start working with AR model objects, all of the Rails logging ends up in the default rails environment log file (develolopment/prodiction.log). Does anyone have any tips for getting rails to append to a separate worker log file?

Trying to track down a dovecot issue .... The error message is: dovecot: auth-worker: Fatal: master: service(auth-worker): child XXXXX killed with signal 11 (core not dumped - set service auth-worker { drop_priv_before_exec=yes }) The setup is dovecot 2.2.29.1 with passwd and mysql auth db's and a very basic config. both authentications work ... the symptom is that after a connection

I've posted some of these patches or ideas before; but now I'm confident enough with the series that it should be ready to push; at any rate, I can now run test-socket-activation in a tight loop without triggering any crashes or hangs. With this in place, I'm going back to work on making the nbd forwarder wort with the parallel thread model. Eric Blake (8): sockets: Use

Trying to track down a dovecot issue .... The error message is: dovecot: auth-worker: Fatal: master: service(auth-worker): child XXXXX killed with signal 11 (core not dumped - set service auth-worker { drop_priv_before_exec=yes }) The setup is dovecot 2.2.29.1 with passwd and mysql auth db's and a very basic config. both authentications work ... the symptom is that after a connection