On Wed, Feb 11, 2015 at 06:30:27AM +0800, Greg KH wrote:
> On Tue, Feb 10, 2015 at 02:27:20PM +0000, Bryn M. Reeves wrote:
> > On Sat, Feb 07, 2015 at 12:07:43PM +0800, Greg KH wrote:
> >
> > $ cat /sys/fs/selinux/avc/cache_stats
> > lookups hits misses allocations
On Sat, Feb 07, 2015 at 12:07:43PM +0800, Greg KH wrote:
> On Fri, Feb 06, 2015 at 03:41:58PM +0000, Bryn M. Reeves wrote:
> > I can't speak for Shane but wouldn't spend too much time looking at the
> > current v2 patch: it's the result of a pretty ugly compromi
but that's usually because people forgot
> why we had this rule, and no one noticed or pointed it out to me that it
> was wrong.
Perhaps sysfs.txt should be updated to make the position more clear? The
current wording seems rather more liberal than this thread would
suggest. Maybe some
On Fri, Feb 06, 2015 at 12:20:53AM +, Seymour, Shane M wrote:
> There has been some ongoing discussion about the best way to implement
> tape statistics. The original method suggested a long time ago used a
> single file in sysfs similar to block statistics in sysfs. That lead to
> an impass ab
On Thu, Feb 05, 2015 at 10:55:50AM -0800, James Bottomley wrote:
> OK, the sysfs bikeshedders hang out on linux-api
>
> https://www.kernel.org/doc/man-pages/linux-api-ml.html
>
> If you can convince them, we'll do the single file approach.
Will do - I've got a couple of stats projects on the go
On Thu, Feb 05, 2015 at 07:46:32PM +0200, "Kai Mäkisara (Kolumbus)" wrote:
> > On 5.2.2015, at 19.40, Laurence Oberman wrote:
> > From: "Kai Mäkisara (Kolumbus)"
> > I still think that the tape statistics should be exported like the
> > statistics of “real” block devices, i.e., one sysfs file ex
On Tue, Jul 08, 2014 at 12:15:54AM +0800, loody wrote:
> so sg_read will not hammer on the page cache like dd without "iflags=direct"
>
> thanks for your kind help,
The sg_read program (and other programs in sg3_utils) sends a command directly
to the device using an SG_IO ioctl. This bypasses all
On Mon, Jul 07, 2014 at 11:39:05PM +0800, loody wrote:
> hi David:
>
> 2014-07-07 23:06 GMT+08:00 David Laight :
> > From: Lars Melin
> > ...
> >> sgread is not included in BusyBox but you should have "touch".
> >> Create a dummy file on the disk and let cron touch it every 4 minutes.
> >
> > You
On Sun, Jul 06, 2014 at 01:18:03AM +0800, loody wrote:
> hi all:
> we met a USB Hard Disk that will go to suspend if host stop
> sending scsi command over 5mins.
> To save the IO, kernel will keep the file in page cache as much as
> he can and under this circumstances, the scsi command may
On Fri, Jun 27, 2014 at 12:59:18PM +0200, Arkadiusz Miskiewicz wrote:
> Thanks for links. I wonder why kernel doesn't decode these to be actually
> readable without a need for asking on ml - was decoding considered?
Normally it does; I was a bit surprised to see numbers printed with such
a recent
On Fri, Jun 27, 2014 at 10:55:08AM +0200, Arkadiusz Miskiewicz wrote:
> [3757350.671860] Result: hostbyte=0x00 driverbyte=0x08
> [3757350.671862] sd 0:0:2:0: [sdc]
> [3757350.671863] Sense Key : 0x4 [current]
http://www.t10.org/lists/2sensekey.htm
0x4 is "hardware error".
> [3757350.671866] s
On Thu, Jun 26, 2014 at 08:55:19PM +0200, Michael Büsch wrote:
> Jun 26 20:47:14 wiggum kernel: [156019.870310] sd 22:0:0:0: [sdb] 976773168
> 512-byte logical blocks: (500 GB/465 GiB)
> Jun 26 20:47:14 wiggum kernel: [156019.870653] sd 22:0:0:0: [sdb] Write
> Protect is off
> Jun 26 20:47:14 wig
On Tue, Jun 10, 2014 at 04:57:06PM -0400, Laurence Oberman wrote:
> I am tired of building modules to enable SCSI tape driver debug so I
> am hoping this patch is acceptable.
> Tested using kernel 3.14.6
>
> Usage example:
> modprobe st debug_flag=1
Missing Signed-off-by :-)
> +module_param_nam
On 03/31/2014 06:32 PM, Laurence Oberman wrote:
> File Line
> 0 scsi_debug.c 3551 int scsi_debug_queuecommand_lck(struct scsi_cmnd
> *SCpnt, done_funct_t done)
> 1 scsi_debug.c 3900 static DEF_SCSI_QCMD(scsi_debug_queuecommand)
> 2 scsi_debug.c 3912 .queuecommand = scsi_debug_queuecomman
On 05/10/2013 03:24 PM, Hannes Reinecke wrote:
However, this time is only defined _on the initiator_.
The specification does _NOT_ have any fixed timeout values for _any_
command. As such it could in theory (and does, if you happen to run
against certain arrays under certain conditions) take seve
On 05/10/2013 01:43 PM, Ewan Milne wrote:
On Thu, 2013-05-09 at 23:11 -0400, Martin K. Petersen wrote:
Introduce eh_timeout which can be used for error handling purposes. This
was previously hardcoded to 10 seconds in the SCSI error handling
code. However, for some fast-fail scenarios it is nece
On 04/25/2013 04:37 PM, Mike Snitzer wrote:> clariion_match does more
than check the vendor and product; if tpgs is
> set (ALUA mode) it returns false.
>
> So yes, while there is room for improvement in clariion_match the
> current code should work just fine with reasoning between emc and alua.
On 04/25/2013 03:50 PM, Mikulas Patocka wrote:
On Thu, 25 Apr 2013, Mike Snitzer wrote:
The handler that is automatically attached _should_ be the correct
handler. We now have the .match() hook for scsi_dh and it has made for
reliable scsi_dh attachment of the correct handler.
The EMC devices
On 03/15/2013 12:46 PM, Bart Van Assche wrote:
The SCSI EH keeps trying until all outstanding request have been
finished. Does lpfc_host_reset_handler() invoke scsi_done() for
I don't think so (ends up calling lpfc_sli_cancel_iocbs() via
lpfc_hba_down_post() after shutting down the mailbox) bu
On 03/15/2013 12:24 PM, Bart Van Assche wrote:
On 03/15/13 12:55, Hannes Reinecke wrote:
And the LLDD is forced into error recovery which'll take _ages_ as each
and every command send during error recovery will time out.
Hello Hannes,
I'm analyzing a related but not identical issue with SRP.
On 03/15/2013 11:55 AM, Hannes Reinecke wrote:
Rationale for this patch is a weird test case with brocade switches;
there you can actually disable a _target_ port. So the port isn't
reachable anymore but no RSCN is send.
I think it's more than a pure test-case; using the rscnsupr feature on
th
On 02/01/2013 11:13 AM, Tao Ma wrote:
You don't mention the versions of the kernel and driver you're using -
if the system is in production I would suggest contacting who ever
normally provides support for the kernel and distribution that you are
running.
We use CentOS6.2 and the kernel version
On 02/01/2013 09:59 AM, Tao Ma wrote:
yes, but the result is the same. It will do some IO first which will
cause this command hang.
You seem to have a problem with either the device/adapter or in the
driver. The backtrace you posted shows that jbd2 (ext4) is still waiting
on IO that's been su
On 02/01/2013 07:54 AM, Bart Van Assche wrote:
* proc_scsi_write - handle writes to /proc/scsi/scsi
* @file: not used
* @buf: buffer to write
* @length: length of buf, at most PAGE_SIZE
* @ppos: not used
*
* Description: this provides a legacy mechanism to add or remove
* devices
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