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>Number: 60456
>Category: kern
>Synopsis: FFS_NO_SNAPSHOT option is not entirely effective
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Fri Jul 17 18:50:00 +0000 2026
>Originator: Jason Thorpe
>Release: 11.99.7
>Organization:
Retrogrouches R Us
>Environment:
NetBSD icarus 11.99.7 NetBSD 11.99.7 (PHAETHON1) #137: Fri Jul 17 08:56:41 PDT 2026 [email protected]:/Users/thorpej/NetBSD/current/src/sys/arch/hb68k/compile/PHAETHON1 hb68k
>Description:
The FFS_NO_SNAPSHOT option exists, yet when it is enabled, I pay for nearly 2 pages of .text on my machine:
dhcp-105:thorpej$ m68k--netbsdelf-size ffs_snapshot.o
text data bss dec hex filename
7713 0 0 7713 1e21 ffs_snapshot.o
dhcp-105:thorpej$
opt_ffs.h:#define FFS_NO_SNAPSHOT 1
>How-To-Repeat:
Enable FFS_NO_SNAPSHOT, build kernel, observe that ffs_snapshot.o is still built and contains progbits.
>Fix:
Yes please.