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Differential D28454

cam: Don't permit crashdumps on non-pollable devices.
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Authored by jhb on Feb 1 2021, 11:32 PM.
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mav
imp
scottl
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cam
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rGe07ac3f2fd73: cam: Don't permit crashdumps on non-pollable devices.
Summary

If a disk's SIM doesn't support polling, then it can't be used to
store crashdumps. Leave d_dump NULL in that case so that dumpon(8)
fails gracefully rather than having dumps fail at crash time.

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rG FreeBSD src repository
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Event Timeline

jhb created this revision.Feb 1 2021, 11:32 PM
Herald added a reviewer: cam. · View Herald TranscriptFeb 1 2021, 11:32 PM
Herald added a subscriber: dab. · View Herald Transcript
Harbormaster completed remote builds in B36663: Diff 83250.Feb 1 2021, 11:32 PM
jhb requested review of this revision.Feb 1 2021, 11:32 PM
jhb added a parent revision: D28453: cam: Permit non-pollable sims..
jhb added a child revision: D28455: iscsi: Mark iSCSI CAM sims as non-pollable..
imp accepted this revision.Feb 1 2021, 11:35 PM

I'm happy with this, but all nvme SIMs support polling... But the change isn't wrong, we'll just never fail to take the if into setting d_dump.

sys/cam/nvme/nvme_da.c
901–902

All nvme sims support polling...

This revision is now accepted and ready to land.Feb 1 2021, 11:35 PM
mav accepted this revision.Feb 1 2021, 11:42 PM
scottl accepted this revision.Feb 2 2021, 4:39 AM
Closed by commit rGe07ac3f2fd73: cam: Don't permit crashdumps on non-pollable devices. (authored by jhb). · Explain WhyFeb 11 2021, 9:53 PM
This revision was automatically updated to reflect the committed changes.
jhb added a commit: rGe07ac3f2fd73: cam: Don't permit crashdumps on non-pollable devices..

Revision Contents
Changeset List

PathSize
sys/
cam/
ata/
3 lines
nvme/
3 lines
scsi/
5 lines

Diff 83712

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sys/cam/ata/ata_da.c

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sys/cam/nvme/nvme_da.c

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sys/cam/scsi/scsi_da.c

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