From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@bugzilla.kernel.org
Subject: [Bug 151631] "Synchronizing SCSI cache" fails during(and delays)
reboot/shutdown
Date: Sat, 06 Aug 2016 19:57:37 +0000
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https://bugzilla.kernel.org/show_bug.cgi?id=151631
--- Comment #2 from icanrealizeum ---
Created attachment 227801
--> https://bugzilla.kernel.org/attachment.cgi?id=227801&action=edit
for systemd, /usr/lib/systemd/system-shutdown/debug.sh
Found workaround, thanks to this article:
https://unix.stackexchange.com/questions/55281/how-to-stop-waking-all-attached-drives-on-reboot-deactivating-swap/55417#55417
If I put the following in aforementioned debug.sh file then reboot is
instant(after the SCSI bug, of course):
#THIS:
#turn off drive cache
hdparm -W0 /dev/sda
#^^^^^^^^^^^^^^^^^^^^^^
#this was already here before:
#flush drive cache:
hdparm -F /dev/sda
hdparm -f /dev/sda
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