From: "Denis V. Lunev" <den@openvz.org>
To: qemu-block@nongnu.org, qemu-devel@nongnu.org
Cc: Kevin Wolf <kwolf@redhat.com>, "Denis V . Lunev" <den@openvz.org>,
Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>,
Max Reitz <mreitz@redhat.com>
Subject: [PATCH 0/2] block: add logging facility for long standing IO requests
Date: Fri, 10 Jul 2020 20:27:09 +0300 [thread overview]
Message-ID: <20200710172711.8059-1-den@openvz.org> (raw)
There are severe delays with IO requests processing if QEMU is running in
virtual machine or over software defined storage. Such delays potentially
results in unpredictable guest behavior. For example, guests over IDE or
SATA drive could remount filesystem read-only if write is performed
longer than 10 seconds.
Such reports are very complex to process. Some good starting point for this
seems quite reasonable. This patch provides one. It adds logging of such
potentially dangerous long IO operations.
Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
next reply other threads:[~2020-07-10 17:30 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-10 17:27 Denis V. Lunev [this message]
2020-07-10 17:27 ` [PATCH 1/2] block/block-backend: add converter from BlockAcctStats to BlockBackend Denis V. Lunev
2020-07-11 10:05 ` Vladimir Sementsov-Ogievskiy
2020-07-10 17:27 ` [PATCH 2/2] block: add logging facility for long standing IO requests Denis V. Lunev
2020-07-11 10:31 ` Vladimir Sementsov-Ogievskiy
2020-07-29 10:30 ` Stefan Hajnoczi
2020-07-29 11:06 ` Denis V. Lunev
2020-07-31 10:23 ` Stefan Hajnoczi
2020-07-29 10:31 ` [PATCH 0/2] " Stefan Hajnoczi
2020-07-31 10:25 ` Stefan Hajnoczi
2020-07-31 10:31 ` Denis V. Lunev
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