multipath iscsi device attaching flow

来源:互联网 发布:软件教育现代化刊物 编辑:程序博客网 时间:2024/05/20 04:12

some work done after iscsi initiator login

1. iscsid -> login, establish connection, hand it to kernel iscsi driver

2. iscsi driver -> create /dev/<sdX> iscsi block device node, and send notification to udev

3. udevd -> compose an uevent and send it to multipathd

4. multipathd -> use libdevmapper to create dm device if all paths has been connected

5. device mapper -> create dm-X device and sent notification to udev

6. udevd -> create various links (/dev/mapper/<wwid>) according to dm udev rules upon receiving the event.

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