Messages in this thread | | | Date | Wed, 15 Apr 2009 11:49:45 -0400 | From | Mark Lord <> | Subject | Re: USB storage no-boot regression (bisected) |
| |
Alan Stern wrote: > On Wed, 15 Apr 2009, Alan Cox wrote: > >> Why should every user suffer a slower boot and a poorer resume time ? >> >> Instead make the root fs mounting look like this >> >> >> while(my_rootfs_hasnt_appeared_and_i_am_sad()) { >> wait_on(&new_disk_discovery); >> } >> >> and poke the queue whenever we add a relevant device. >> >> That way if you are booting off an initrd you can finish the SATA probe >> in parallel to getting userspace ticking over. >> >> On what is nowdays essentially a hot plug system it all needs turning >> this way up - eg RAID volumes should assemble and come online as the >> drives are discovered not at some fixed point later in userspace. > > Indeed, something like this should also be used for > resume-from-hibernation, to wait for the swap device. ..
It just needs a way to set a finite timeout, so that server room equipment can auto-panic-reboot and try again if a device has died.
-ml
| |