From e918a1b5a94f270186dca59156354acd2a596494 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Tue, 3 Jun 2014 16:49:38 +0200 Subject: [PATCH] udev: exclude device-mapper from block device ownership event locking --- src/udev/udevd.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/src/udev/udevd.c b/src/udev/udevd.c index 819ea3bb2..6c0510497 100644 --- a/src/udev/udevd.c +++ b/src/udev/udevd.c @@ -290,7 +290,19 @@ static void worker_new(struct event *event) * acquired the lock, the external process will block until * udev has finished its event handling. */ - if (streq_ptr("block", udev_device_get_subsystem(dev))) { + + /* + * since we make check - device seems unused - we try + * ioctl to deactivate - and device is found to be opened + * sure, you try to take a write lock + * if you get it udev is out + * if you can't get it, udev is busy + * we cannot deactivate openned device (as it is in-use) + * maybe we should just exclude dm from that thing entirely + * IMHO this sounds like a good plan for this moment + */ + if (streq_ptr("block", udev_device_get_subsystem(dev)) && + !startswith("dm-", udev_device_get_sysname(dev))) { struct udev_device *d = dev; if (streq_ptr("partition", udev_device_get_devtype(d))) -- 2.30.2