Use tmpfs in rc.initdiskless
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Authored by stevek on Jun 9 2017, 1:06 AM.

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rS319987: Replace md(4) usage in diskless(8) script rc.initdiskless with tmpfs(5).

Summary

Replace md(4) usage in diskless(8) script rc.initdiskless with tmpfs(5).
Need to multiply the size of the disk passed to mount_md by 512 as mdmfs expects number of 512-byte blocks while tmpfs size option wants number of bytes.

Test Plan

Booted a diskless image on Broadcom iProc ARM-based system and compared tmpfs(5) version with md(4) version to ensure correct operation.

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Repository

rS FreeBSD src repository - subversion

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Event Timeline

stevek created this revision.Jun 9 2017, 1:06 AM

Herald added subscribers: Contributor Reviews (src), imp. · View Herald TranscriptJun 9 2017, 1:06 AM

Harbormaster completed remote builds in B9749: Diff 29364.Jun 9 2017, 1:06 AM

jonathan added a subscriber: jonathan.Jun 9 2017, 1:19 AM

emaste added a subscriber: guest-svmhdvn.Jun 9 2017, 1:56 AM

stevek added a reviewer: brooks.Jun 13 2017, 3:34 PM

This seems like a fine modernization. Probably should not be MFC'd due to POLA with custom kernels.

This revision is now accepted and ready to land.Jun 15 2017, 5:44 PM

Closed by commit rS319987: Replace md(4) usage in diskless(8) script rc.initdiskless with tmpfs(5). (authored by stevek). · Explain WhyJun 15 2017, 8:06 PM

This revision was automatically updated to reflect the committed changes.

stevek mentioned this in D11765: Fall back to md(4) in rc.initdiskless if tmpfs(5) is not available.Jul 28 2017, 3:41 AM

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head/

etc/

rc.initdiskless

4 lines

Diff 29680

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Use tmpfs in rc.initdisklessClosedPublicActions