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six demon bag

Wind, fire, all that kind of thing!

2017-04-28

Useful settings for grub on Debian

Boot a kernel just once

If you want to test a new kernel without having access to the console you need to make sure that the system comes back up with the old kernel if the new one panics. Add a setting panic=2 to the kernel commandline in /etc/default/grub to have the system automatically reboot in case of a kernel panic, and tell grub to boot a saved kernel by default:

GRUB_DEFAULT="saved"
GRUB_CMDLINE_LINUX="panic=2"

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Posted 03:10 [permalink]

2017-04-01

Reset VSS Writers

VSS writers are application-specific components for Microsoft's Volume Shadow Copy Service, which ensure the consistency of application data when a shadow copy is created. That's quite useful for creating consistent backups of a system. However, some of these writers go into error states more or less frequently. And Microsoft did not deem it necessary to document how to reset writers without rebooting the entire system (or at least I didn't manage to find that piece of information).

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Posted 20:41 [permalink]