Gorka Eguileor af0f00bc52 Run backup compression on native thread ... Backup data compression is a CPU bound operation that will not yield to other greenthreads, so given enough simultaneous backup operations they will lead to other threads' starvation. This is really problematic for DB connections, since starvation will lead to connections getting dropped with errors such as "Lost connection to MySQL server during query". Detailed information on why these connections get dropped can be found in comment "[31 Aug 2007 9:21] Magnus Blåudd" on this MySQL bug [1]. These DB issues may result in backups unnecessary ending in an "error" state. This patch fixes this by moving the compression to a native thread so the cooperative multitasking in Cinder Backup can continue switching threads. [1] https://bugs.mysql.com/bug.php?id=28359 Closes-Bug: #1692775 Closes-Bug: #1719580 Change-Id: I1946dc0ad9cb7a68072a39816fa9fa224c2eb6a5		2017-10-16 17:09:46 +02:00
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drivers	Run backup compression on native thread	2017-10-16 17:09:46 +02:00
__init__.py	Move unit tests into dedicated directory	2015-04-21 18:40:40 -06:00
fake_backup.py	Move all backups related unit tests to backup directory	2016-05-26 17:09:33 +03:00
fake_google_client.py	Use googleapiclient import instead of apiclient	2016-03-11 12:19:01 +01:00
fake_google_client2.py	Add cinder backup driver for Google Cloud Storage	2016-01-18 23:28:23 +05:30
fake_service.py	Rename method 'delete' to 'delete_backup' in backup drivers	2017-07-04 13:35:03 +03:00
fake_service_with_verify.py	Remove oslo logging from backup unit tests	2015-06-27 21:23:34 +00:00
fake_swift_client.py	Remove oslo logging from backup unit tests	2015-06-27 21:23:34 +00:00
fake_swift_client2.py	Switch to the oslo_utils.fileutils	2015-08-20 07:47:48 +00:00
test_backup.py	Add ability to specify backup driver via class name	2017-10-11 12:59:00 +03:00
test_rpcapi.py	Add service dynamic log change/query	2017-05-16 13:37:35 +02:00