diff options
Diffstat (limited to 'sys-apps/systemd/files/215-0003-udev-exclude-MD-from-block-device-ownership-event-lo.patch')
| -rw-r--r-- | sys-apps/systemd/files/215-0003-udev-exclude-MD-from-block-device-ownership-event-lo.patch | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/sys-apps/systemd/files/215-0003-udev-exclude-MD-from-block-device-ownership-event-lo.patch b/sys-apps/systemd/files/215-0003-udev-exclude-MD-from-block-device-ownership-event-lo.patch new file mode 100644 index 00000000..c730242c --- /dev/null +++ b/sys-apps/systemd/files/215-0003-udev-exclude-MD-from-block-device-ownership-event-lo.patch @@ -0,0 +1,54 @@ +From 9d17a215fb30cb3e49db516a39c9bec2159004a7 Mon Sep 17 00:00:00 2001 +From: Kay Sievers <kay@vrfy.org> +Date: Thu, 24 Jul 2014 23:37:35 +0200 +Subject: [PATCH 3/3] udev: exclude MD from block device ownership event + locking + +MD instantiates devices at open(). This is incomptible with the +locking logic, as the "change" event emitted when stopping a +device will bring it back. +--- + src/udev/udevd.c | 23 +++++++---------------- + 1 file changed, 7 insertions(+), 16 deletions(-) + +diff --git a/src/udev/udevd.c b/src/udev/udevd.c +index a45d324..db935d6 100644 +--- a/src/udev/udevd.c ++++ b/src/udev/udevd.c +@@ -285,26 +285,17 @@ static void worker_new(struct event *event) + udev_event->exec_delay = exec_delay; + + /* +- * Take a "read lock" on the device node; this establishes ++ * Take a shared lock on the device node; this establishes + * a concept of device "ownership" to serialize device +- * access. External processes holding a "write lock" will ++ * access. External processes holding an exclusive lock will + * cause udev to skip the event handling; in the case udev +- * acquired the lock, the external process will block until ++ * acquired the lock, the external process can block until + * udev has finished its event handling. + */ +- +- /* +- * <kabi_> since we make check - device seems unused - we try +- * ioctl to deactivate - and device is found to be opened +- * <kay> sure, you try to take a write lock +- * <kay> if you get it udev is out +- * <kay> if you can't get it, udev is busy +- * <kabi_> we cannot deactivate openned device (as it is in-use) +- * <kay> maybe we should just exclude dm from that thing entirely +- * <kabi_> IMHO this sounds like a good plan for this moment +- */ +- if (streq_ptr("block", udev_device_get_subsystem(dev)) && +- !startswith(udev_device_get_sysname(dev), "dm-")) { ++ if (!streq_ptr(udev_device_get_action(dev), "remove") && ++ streq_ptr("block", udev_device_get_subsystem(dev)) && ++ !startswith(udev_device_get_sysname(dev), "dm-") && ++ !startswith(udev_device_get_sysname(dev), "md")) { + struct udev_device *d = dev; + + if (streq_ptr("partition", udev_device_get_devtype(d))) +-- +1.8.5.5 + |