https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238301
Bug ID: 238301
Summary: [PATCH] handle encrypted swap in dumpon rc.d script
Product: Base System
Version: 12.0-STABLE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: bin
Assignee: b...@freebsd.org
Reporter: rozhuk...@gmail.com
Created attachment 204791
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=204791&action=edit
Handle encrypted swap.
Then dumpdev="AUTO" then rc.d/dumpon looks for first avail swap file in
etc/fstab and if it exist - try to make them as dumpdev.
Typical encrypted swap:
/dev/SOME_DEV.eli none swap
sw,late,ealgo=AES-XTS,keylen=256,sectorsize=4096 0 0
Then rc.d/dumpon check this - /dev/SOME_DEV.eli does not exist.
Even if it exist it can not be used as dumpdev die to encrypt key will be
destroyed on reboot.
Patch simple strip ".eli" from end of devname before check existence.
PS:
1. Probably savecore should have some flag to able to write zeros/random on
dumpdev after read dump.
2. Feature req: run "trim" for swap before "swapon".
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