From: bugzilla-daemon@kernel.org
To: linux-usb@vger.kernel.org
Subject: [Bug 219362] USB SATA does not correctly shutdown the SSD upon poweroff causing data loss
Date: Tue, 08 Oct 2024 15:04:34 +0000 [thread overview]
Message-ID: <bug-219362-208809-RbRF4jr4VM@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-219362-208809@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=219362
--- Comment #6 from Alan Stern (stern@rowland.harvard.edu) ---
The 'u' sysrq code attempts to remount all mounted filesystems read-only.
Shouldn't that send a synchronize-cache command to the SSD? If it doesn't,
there's something wrong.
It's also possible that Tomas is sending the 'o' poweroff sysrq code too soon
after the 'u' code, leaving the system insufficient time to flush the cache
before it powers off.
Tomas, the 'o' code does not shut down devices at all, let alone give them a
chance to clean up first. As Greg said, it is meant for emergency use. All it
does is turn off the system power -- it does not perform a clean shutdown.
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next prev parent reply other threads:[~2024-10-08 15:04 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-08 11:43 [Bug 219362] New: USB SATA does not correctly shutdown the SSD upon poweroff causing data loss bugzilla-daemon
2024-10-08 11:53 ` Greg KH
2024-10-08 11:53 ` [Bug 219362] " bugzilla-daemon
2024-10-08 12:00 ` bugzilla-daemon
2024-10-08 12:08 ` Greg KH
2024-10-08 12:08 ` bugzilla-daemon
2024-10-08 12:22 ` bugzilla-daemon
2024-10-08 13:27 ` Oliver Neukum
2024-10-08 13:27 ` bugzilla-daemon
2024-10-08 15:04 ` bugzilla-daemon [this message]
2024-10-08 15:15 ` bugzilla-daemon
2024-10-08 15:17 ` bugzilla-daemon
2024-10-08 16:13 ` bugzilla-daemon
2024-10-08 16:24 ` bugzilla-daemon
2024-10-09 10:08 ` bugzilla-daemon
2024-10-09 10:34 ` Greg KH
2024-10-09 10:34 ` bugzilla-daemon
2024-10-09 10:41 ` bugzilla-daemon
2024-10-09 10:44 ` bugzilla-daemon
2024-10-09 12:54 ` bugzilla-daemon
2024-10-09 13:32 ` bugzilla-daemon
2024-10-09 14:19 ` bugzilla-daemon
2024-10-09 16:13 ` bugzilla-daemon
2024-10-09 17:44 ` bugzilla-daemon
2024-10-10 7:10 ` bugzilla-daemon
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