On Wednesday 07 June 2017 09:58:55 Pali Rohár wrote: > On Tuesday 06 June 2017 11:56:45 Felipe Sateler wrote: > > On Mon, Jun 5, 2017 at 2:32 PM, Pali Rohár <pali.ro...@gmail.com> > > wrote: > > > On Monday 05 June 2017 20:23:52 Michael Biebl wrote: > > >> Am 05.06.2017 um 13:12 schrieb Pali Rohár: > > >> >> Am 05.06.2017 um 09:59 schrieb Pali Rohár: > > >> >>> /etc/rc0.d/K08cryptdisks > > >> >>> /etc/rc0.d/K09cryptdisks-early > > >> >>> /etc/rc0.d/K10udev > > >> > > > >> > Problem is that in K08 and K09 phase is udev not running, but > > >> > socket is present. udev is probably killed by > > >> > /etc/rc0.d/K03sendsigs which is before K08 and K09. Above > > >> > patch modify K10 which is *after* K08 and K09, therefore it > > >> > has absolutely no effect on fixing this issue. > > >> > > >> Ah, ok. The info about sendsigs being ordered before udev on > > >> shutdown was missing. > > > > > > Anyway, if you are patching K10udev and whole freeze happens in > > > K08cryptdisks and K09cryptdisks-early, then such patch is noop as > > > whole freeze happens before patch line is executed. sendsigs > > > does not change behaviour of patch. > > > > > >> I guess we need both then: > > >> - udev using the sendsigs.omit.d interface to avoid being killed > > >> by /etc/init.d/sendsigs > > >> and > > >> - removing the socket on stop and making sure udev is stopped in > > >> 0 / 6. > > >> > > >> Anyone willing to work on a patch? > > > > > > I think the first thing which needs to be done is to define order > > > sendsigs, cryptdisks and udev. Should be udev really stopped > > > after cryptdisks? Or not? If not, then udev should be stopped > > > *before* sendsigs. Otherwise sendsigs needs to be patched to not > > > kill udev. > > > > If the udev pid is added to sendsigs.omit.d as noted by Michael > > then sendsigs should stop killing udev. So no need to patch > > sendsigs. > > Yes, this seems to work. > > > > But other question is what happens in system when udev is still > > > running even after unmounting filesystem and when basically all > > > other remaining services were already killed by sendsigs... > > > > Udev would still be stopped, just later. I note that under systemd > > udev is not stopped until the final killing spree, so hopefully > > this delay in stopping will not introduce problems. > > See attached patch for /etc/init.d/udev. I tested it and it fixed > problem this problem with freezing computer at reboot. > > I need to use --background --make-pidfile because udev itself cannot > create pidfile.
PING. Do you need to test something more? Or is that patch enough? -- Pali Rohár pali.ro...@gmail.com
signature.asc
Description: This is a digitally signed message part.