On 11/22/22 3:30 PM, Wenchao Hao wrote: > There are 3 iscsi session's startup mode which are onboot, manual and > automatic. We can boot from iSCSI disks with help of dracut's service > in initrd, which would set node's startup mode to onboot, then create > iSCSI sessions. > > While the configure of onboot mode is recorded in file of initrd stage > and would be lost when switch to rootfs. Even if we update the startup > mode to onboot by hand after switch to rootfs, it is possible that the > configure would be covered by another discovery command. > > root would be mounted on iSCSI disks when boot from iSCSI disks, if the > sessions is logged out, the related disks would be removed, which would > cause the whole system halt. The userspace tools check for this already don't they? Running iscsiadm on the root disk returns a failure and message about it being in use. Userspace can check the session's disks and see if they are mounted and what they are being used for.
