qemu/include/block
Chrysostomos Nanakos 2f78e491d7 async: aio_context_new(): Handle event_notifier_init failure
On a system with a low limit of open files the initialization
of the event notifier could fail and QEMU exits without printing any
error information to the user.

The problem can be easily reproduced by enforcing a low limit of open
files and start QEMU with enough I/O threads to hit this limit.

The same problem raises, without the creation of I/O threads, while
QEMU initializes the main event loop by enforcing an even lower limit of
open files.

This commit adds an error message on failure:

 # qemu [...] -object iothread,id=iothread0 -object iothread,id=iothread1
 qemu: Failed to initialize event notifier: Too many open files in system

Signed-off-by: Chrysostomos Nanakos <cnanakos@grnet.gr>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2014-09-22 11:39:48 +01:00
..
accounting.h block: Make the block accounting functions operate on BlockAcctStats 2014-09-10 10:41:29 +02:00
aio.h async: aio_context_new(): Handle event_notifier_init failure 2014-09-22 11:39:48 +01:00
block.h block: Add bdrv_aio_cancel_async 2014-09-22 11:38:58 +01:00
block_int.h block: Extract the block accounting code 2014-09-10 10:41:29 +02:00
blockjob.h block: drop aio functions that operate on the main AioContext 2014-07-09 15:50:11 +02:00
coroutine.h coroutine: Drop co_sleep_ns 2014-08-29 10:46:58 +01:00
coroutine_int.h coroutine: stop using AioContext in CoQueue 2013-05-24 16:17:56 +02:00
nbd.h nbd: Handle NBD_OPT_LIST option. 2014-06-30 12:50:17 +02:00
qapi.h block: make bdrv_query_stats() static 2014-06-27 18:19:57 +02:00
scsi.h scsi: Print command name in debug 2014-06-18 08:47:10 +02:00
snapshot.h qemu-nbd: support internal snapshot export 2013-12-04 15:19:00 +01:00
thread-pool.h thread-pool: Drop unnecessary includes 2014-09-10 10:41:29 +02:00