From 41f9e372c064c2c254dce0f3657bd1c36f950e7c Mon Sep 17 00:00:00 2001 From: Zdenek Kabelac Date: Fri, 2 Oct 2020 17:18:12 +0200 Subject: [PATCH] bcache: fix waiting problem for completed IO Call _wait_all() which does check whether there is still some pending IO before sleep. Otherwise it may happen our submitted IO operations have been already dispatched and this call then endlessly waits for IO which are all done. This can be reproduced when device returns quickly errors on write requests. --- WHATS_NEW | 1 + lib/device/bcache.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/WHATS_NEW b/WHATS_NEW index c7a3207f9..bebd1f5cf 100644 --- a/WHATS_NEW +++ b/WHATS_NEW @@ -1,5 +1,6 @@ Version 2.03.11 - ================================== + Fix bcache waiting for IO completion with failing disks. Configure use own python path name order to prefer using python3. Add configure --enable-editline support as an alternative to readline. Enhance reporting and error handling when creating thin volumes. diff --git a/lib/device/bcache.c b/lib/device/bcache.c index fd18eef6e..33d124229 100644 --- a/lib/device/bcache.c +++ b/lib/device/bcache.c @@ -963,7 +963,7 @@ static struct block *_new_block(struct bcache *cache, int di, block_address i, b if (can_wait) { if (dm_list_empty(&cache->io_pending)) _writeback(cache, 16); // FIXME: magic number - _wait_io(cache); + _wait_all(cache); } else { log_debug("bcache no new blocks for di %d index %u", di, (uint32_t) i);