dm: sysfs add suspended attribute (486d220f) · Commits · 戴 / test

Add a file named 'suspended' to each device-mapper device directory in sysfs. It holds the value 1 while the device is suspended. Otherwise it holds 0. Signed-off-by:

Peter Rajnoha <prajnoha@redhat.com> Signed-off-by:

Alasdair G Kergon <agk@redhat.com>

drivers/md/dm-sysfs.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -57,12 +57,21 @@ static ssize_t dm_attr_uuid_show(struct mapped_device md, char buf)
		return strlen(buf);
		}

		static ssize_t dm_attr_suspended_show(struct mapped_device md, char buf)
		{
		sprintf(buf, "%d\n", dm_suspended(md));

		return strlen(buf);
		}

		static DM_ATTR_RO(name);
		static DM_ATTR_RO(uuid);
		static DM_ATTR_RO(suspended);

		static struct attribute *dm_attrs[] = {
		&dm_attr_name.attr,
		&dm_attr_uuid.attr,
		&dm_attr_suspended.attr,
		NULL,
		};

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