sas_rediscover(9)

✨ NAME ✨ — sas_rediscover(9)

okay bestie, this is sas_rediscover(9) from the Kernel API Manual, and it is literally here to revalidate the domain. 💅✨

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🎀 SYNOPSIS 🎀

int sas_rediscover (struct domain_device *dev , const int phy_id );

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🌸 ARGUMENTS 🌸

• dev — the domain device to be detect. 👀
• phy_id — the phy id will be detected. 🔍

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🫶 NOTE 🫶

okay so here's the part that is not a vibe to ignore, bestie: this process _must_ quit (return) as soon as any connection errors are encountered. 🚨 Like, immediately. No cap.

Connection recovery is done elsewhere. 💅

Discover process only interrogates devices in order to discover the domain. That's the whole assignment. 🎯

For plugging out, we un-register the device only when it is the last phy in the port; for other phys in this port, we just delete it from the port. 🫡

For inserting, we do discovery when it is the first phy; for other phys in this port, we add it to the port to forming the wide-port. 🧚✨

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🦋 SEE ALSO 🦋

• Kernel file ./drivers/scsi/libsas/sas_expander.c
• sas_ex_discover_devices(9)
• sas_configure_parent(9)
• sas_configure_routing(9)
• sas_discover_expander(9)
• sas_find_bcast_dev(9)
• sas_ex_revalidate_domain(9)

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💖 signed, sealed, and slayed by ./drivers/scsi/libsas — October 2026 — for sas_rediscover(9) 🫶👑