* [linux-lvm] flakey target isn't flaking
@ 2014-12-01 19:12 Phillip Susi
2014-12-01 19:36 ` Alasdair G Kergon
0 siblings, 1 reply; 2+ messages in thread
From: Phillip Susi @ 2014-12-01 19:12 UTC (permalink / raw)
To: LVM general discussion and development
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Ubuntu's linux kernel version 3.13.0-39-generic, lvm 2.02.98.
Table:
flakey: 0 20480 flakey 7:0 0 10 1 0
That should be throwing IO errors for one out of every 11 seconds, but
I run:
while :; do sudo dd bs=65536 count=1 if=/dev/mapper/flakey
of=/dev/null iflag=direct ; sleep 0.2 ; done
And it never sees any errors. What gives?
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [linux-lvm] flakey target isn't flaking
2014-12-01 19:12 [linux-lvm] flakey target isn't flaking Phillip Susi
@ 2014-12-01 19:36 ` Alasdair G Kergon
0 siblings, 0 replies; 2+ messages in thread
From: Alasdair G Kergon @ 2014-12-01 19:36 UTC (permalink / raw)
To: Phillip Susi; +Cc: LVM general discussion and development
On Mon, Dec 01, 2014 at 02:12:01PM -0500, Phillip Susi wrote:
> And it never sees any errors. What gives?
Try writes not reads.
The documentation is unclear.
Or work out a sensible way to enhance it to do more little things.
Alasdair
^ permalink raw reply [flat|nested] 2+ messages in thread
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