From: Oliver Neukum <oneukum@suse.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>,
Greg KH <greg@kroah.com>, Jun Itou <itou_jun@infoseek.jp>,
Markus Rathgeb <maggu2810@gmail.com>, Matt <vickm78@hotmail.com>,
SCSI development list <linux-scsi@vger.kernel.org>,
USB Storage list <usb-storage@lists.one-eyed-alien.net>,
USB list <linux-usb@vger.kernel.org>,
Jens Axboe <axboe@kernel.dk>, Dan Williams <dcbw@redhat.com>,
brad <bradhaack@fastmail.us>
Subject: Re: [PATCH] USB: storage: add "no SYNCHRONIZE CACHE" quirk
Date: Tue, 15 Dec 2015 12:34:31 +0100 [thread overview]
Message-ID: <1450179271.17387.19.camel@suse.com> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1512031320580.1324-100000@iolanthe.rowland.org>
On Thu, 2015-12-03 at 13:36 -0500, Alan Stern wrote:
> This is an old problem, but it was never resolved and it still affects
> people (Bugzilla #89511). In short, there are USB-(S)ATA bridges that
> claim to be write-back but don't support the SYNCHRONIZE CACHE
> command.
> This causes errors when filesystems try to flush data out to the disk.
OK, maybe this is a stupid idea, but could we test the command as we
enumerate the slave and store the result?
Regards
Oliver
next prev parent reply other threads:[~2015-12-15 11:36 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-22 14:55 [PATCH] USB: storage: add "no SYNCHRONIZE CACHE" quirk Alan Stern
2015-06-22 15:43 ` James Bottomley
2015-06-22 17:30 ` Alan Stern
2015-06-22 17:36 ` James Bottomley
[not found] ` <1434994588.2237.90.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2015-06-22 17:48 ` Alan Stern
2015-06-22 18:44 ` Markus Rathgeb
[not found] ` <CAOcK=COj7=akJUhsg2Pfr5aeh_tC9dEL3rZK1yKuvTN0KyJB1A-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-06-22 20:16 ` Alan Stern
2015-06-22 21:32 ` Markus Rathgeb
[not found] ` <Pine.LNX.4.44L0.1506221340180.1799-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2015-06-22 21:22 ` James Bottomley
[not found] ` <1435008177.2237.137.camel-d9PhHud1JfjCXq6kfMZ53/egYHeGw8Jk@public.gmane.org>
2015-07-24 15:19 ` Alan Stern
2015-12-03 18:36 ` Alan Stern
2015-12-15 11:34 ` Oliver Neukum [this message]
[not found] ` <1450179271.17387.19.camel-IBi9RG/b67k@public.gmane.org>
2015-12-15 15:16 ` Alan Stern
2015-06-23 14:15 ` David Laight
2015-06-26 9:43 ` Stefan Richter
2015-06-26 10:14 ` James Bottomley
2015-06-26 11:05 ` Stefan Richter
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