* [xen-unstable test] 30769: regressions - trouble: blocked/broken/fail/pass
@ 2014-10-17 2:42 xen.org
2014-10-17 20:06 ` Konrad Rzeszutek Wilk
0 siblings, 1 reply; 6+ messages in thread
From: xen.org @ 2014-10-17 2:42 UTC (permalink / raw)
To: xen-devel; +Cc: ian.jackson
flight 30769 xen-unstable real [real]
http://www.chiark.greenend.org.uk/~xensrcts/logs/30769/
Regressions :-(
Tests which did not succeed and are blocking,
including tests which could not be run:
test-amd64-i386-xl-qemut-winxpsp3 10 guest-localmigrate fail REGR. vs. 30744
build-i386-rumpuserxen 3 host-install(3) broken REGR. vs. 30744
test-amd64-i386-pair 7 xen-boot/src_host fail REGR. vs. 30744
Tests which did not succeed, but are not blocking:
test-amd64-amd64-libvirt 9 guest-start fail never pass
test-armhf-armhf-libvirt 9 guest-start fail never pass
test-amd64-i386-rumpuserxen-i386 1 build-check(1) blocked n/a
test-amd64-amd64-xl-pcipt-intel 9 guest-start fail never pass
test-armhf-armhf-xl 10 migrate-support-check fail never pass
test-amd64-i386-libvirt 9 guest-start fail never pass
test-amd64-i386-xl-qemuu-winxpsp3-vcpus1 14 guest-stop fail never pass
test-amd64-i386-xl-qemut-winxpsp3-vcpus1 14 guest-stop fail never pass
test-amd64-amd64-xl-qemut-winxpsp3 14 guest-stop fail never pass
test-amd64-i386-xl-qemuu-winxpsp3 14 guest-stop fail never pass
test-amd64-i386-xl-winxpsp3-vcpus1 14 guest-stop fail never pass
test-amd64-amd64-xl-winxpsp3 14 guest-stop fail never pass
test-amd64-i386-xl-winxpsp3 14 guest-stop fail never pass
test-amd64-i386-xl-qemuu-win7-amd64 14 guest-stop fail never pass
test-amd64-amd64-xl-qemut-win7-amd64 14 guest-stop fail never pass
test-amd64-amd64-xl-qemuu-win7-amd64 14 guest-stop fail never pass
test-amd64-amd64-xl-win7-amd64 14 guest-stop fail never pass
test-amd64-i386-xl-qemut-win7-amd64 14 guest-stop fail never pass
test-amd64-i386-xl-win7-amd64 14 guest-stop fail never pass
test-amd64-amd64-xl-qemuu-winxpsp3 14 guest-stop fail never pass
version targeted for testing:
xen 9cea500dc0294947b12b8e2479a238acd0e990f2
baseline version:
xen 4d57153b52a36183d58e8de6ba613929f906386a
------------------------------------------------------------
People who touched revisions under test:
Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
Chao Peng <chao.p.peng@linux.intel.com>
Dongxiao Xu <dongxiao.xu@intel.com>
Jan Beulich <jbeulich@suse.com>
Wei Liu <wei.liu2@citrix.com>
------------------------------------------------------------
jobs:
build-amd64 pass
build-armhf pass
build-i386 pass
build-amd64-libvirt pass
build-armhf-libvirt pass
build-i386-libvirt pass
build-amd64-oldkern pass
build-i386-oldkern pass
build-amd64-pvops pass
build-armhf-pvops pass
build-i386-pvops pass
build-amd64-rumpuserxen pass
build-i386-rumpuserxen broken
test-amd64-amd64-xl pass
test-armhf-armhf-xl pass
test-amd64-i386-xl pass
test-amd64-i386-rhel6hvm-amd pass
test-amd64-i386-qemut-rhel6hvm-amd pass
test-amd64-i386-qemuu-rhel6hvm-amd pass
test-amd64-amd64-xl-qemut-debianhvm-amd64 pass
test-amd64-i386-xl-qemut-debianhvm-amd64 pass
test-amd64-amd64-xl-qemuu-debianhvm-amd64 pass
test-amd64-i386-xl-qemuu-debianhvm-amd64 pass
test-amd64-i386-freebsd10-amd64 pass
test-amd64-amd64-xl-qemuu-ovmf-amd64 pass
test-amd64-i386-xl-qemuu-ovmf-amd64 pass
test-amd64-amd64-rumpuserxen-amd64 pass
test-amd64-amd64-xl-qemut-win7-amd64 fail
test-amd64-i386-xl-qemut-win7-amd64 fail
test-amd64-amd64-xl-qemuu-win7-amd64 fail
test-amd64-i386-xl-qemuu-win7-amd64 fail
test-amd64-amd64-xl-win7-amd64 fail
test-amd64-i386-xl-win7-amd64 fail
test-amd64-i386-xl-credit2 pass
test-amd64-i386-freebsd10-i386 pass
test-amd64-i386-rumpuserxen-i386 blocked
test-amd64-amd64-xl-pcipt-intel fail
test-amd64-i386-rhel6hvm-intel pass
test-amd64-i386-qemut-rhel6hvm-intel pass
test-amd64-i386-qemuu-rhel6hvm-intel pass
test-amd64-amd64-libvirt fail
test-armhf-armhf-libvirt fail
test-amd64-i386-libvirt fail
test-amd64-i386-xl-multivcpu pass
test-amd64-amd64-pair pass
test-amd64-i386-pair fail
test-amd64-amd64-xl-sedf-pin pass
test-amd64-amd64-xl-sedf pass
test-amd64-i386-xl-qemut-winxpsp3-vcpus1 fail
test-amd64-i386-xl-qemuu-winxpsp3-vcpus1 fail
test-amd64-i386-xl-winxpsp3-vcpus1 fail
test-amd64-amd64-xl-qemut-winxpsp3 fail
test-amd64-i386-xl-qemut-winxpsp3 fail
test-amd64-amd64-xl-qemuu-winxpsp3 fail
test-amd64-i386-xl-qemuu-winxpsp3 fail
test-amd64-amd64-xl-winxpsp3 fail
test-amd64-i386-xl-winxpsp3 fail
------------------------------------------------------------
sg-report-flight on osstest.cam.xci-test.com
logs: /home/xc_osstest/logs
images: /home/xc_osstest/images
Logs, config files, etc. are available at
http://www.chiark.greenend.org.uk/~xensrcts/logs
Test harness code can be found at
http://xenbits.xensource.com/gitweb?p=osstest.git;a=summary
broken-step build-i386-rumpuserxen host-install(3)
Not pushing.
------------------------------------------------------------
commit 9cea500dc0294947b12b8e2479a238acd0e990f2
Author: Jan Beulich <jbeulich@suse.com>
Date: Thu Oct 16 10:08:39 2014 +0200
move XENMEM_get_vnumainfo out of tools-only section of public/memory.h
After all this interface specifically exists for guest kernels to learn
about their (virtual) topology. I'm sure I made a comment to this
effect during review, but apparently I then didn't notice that this
never got carried out.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
commit 4c5e3a8e84f2158487d8f403b3053c52d8ee2dd7
Author: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
Date: Thu Oct 16 10:07:56 2014 +0200
docs, amd_ucode: condense amd_ucode notes
Some cleanups to the documentation-
- Remove unnecessary steps listed to apply ucode using initrd.
- Condense 'Misc notes' section as well
Suggested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
commit 747187995dd8cb28dcac1db8851d60e54f85f8e4
Author: Chao Peng <chao.p.peng@linux.intel.com>
Date: Thu Oct 9 12:02:04 2014 +0800
tools: CMDs and APIs for Cache Monitoring Technology
Introduced some new xl commands to enable/disable Cache Monitoring
Technology(CMT) feature.
The following two commands is to attach/detach the CMT feature
to/from a certain domain.
$ xl psr-cmt-attach domid
$ xl psr-cmt-detach domid
This command is to display the CMT information, such as L3 cache
occupancy.
$ xl psr-cmt-show cache_occupancy <domid>
Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
(qemu changes not included)
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [xen-unstable test] 30769: regressions - trouble: blocked/broken/fail/pass
2014-10-17 2:42 [xen-unstable test] 30769: regressions - trouble: blocked/broken/fail/pass xen.org
@ 2014-10-17 20:06 ` Konrad Rzeszutek Wilk
2014-10-20 16:56 ` Ian Jackson
0 siblings, 1 reply; 6+ messages in thread
From: Konrad Rzeszutek Wilk @ 2014-10-17 20:06 UTC (permalink / raw)
To: xen.org; +Cc: xen-devel
On Fri, Oct 17, 2014 at 03:42:44AM +0100, xen.org wrote:
> flight 30769 xen-unstable real [real]
> http://www.chiark.greenend.org.uk/~xensrcts/logs/30769/
>
> Regressions :-(
>
> Tests which did not succeed and are blocking,
> including tests which could not be run:
> test-amd64-i386-xl-qemut-winxpsp3 10 guest-localmigrate fail REGR. vs. 30744
That shows that the save is happening:
http://www.chiark.greenend.org.uk/~xensrcts/logs/30769/test-amd64-i386-xl-qemut-winxpsp3/serial-rice-weevil.log
ct 16 21:46:15.654615 (XEN) HVM4 save: VIRIDIAN_VCPU
Oct 16 21:46:15.654642 (XEN) HVM4 save: VMCE_VCPU
Oct 16 21:46:15.654672 (XEN) HVM4 save: TSC_ADJUST
...
and then the restore:
Oct 16 21:46:37.474614 (XEN) HVM5 restore: TSC_ADJUST 0
Oct 16 21:46:37.474647 (XEN) HVM5 restore: TSC_ADJUST 1
Oct 16 21:46:37.474674 [ 1406.549487] device vif5.0 entered promiscuous mode
Oct 16 21:46:37.962607 [ 1406.552350] IPv6: ADDRCONF(NETDEV_UP): vif5.0: link is not ready
Oct 16 21:46:37.962652 [ 1406.663239] device vif5.0-emu entered promiscuous mode
Oct 16 21:46:38.074609 [ 1406.666168] xenbr0: port 3(vif5.0-emu) entered forwarding state
Oct 16 21:46:38.082590 [ 1406.666191] xenbr0: port 3(vif5.0-emu) entered forwarding state
.. with all of the NICs seeming to go in the right state.
Is there a particular file that has the output from 'xl migrate'?
Thought it probably will be nop as the save/restore worked fine.
> build-i386-rumpuserxen 3 host-install(3) broken REGR. vs. 30744
> test-amd64-i386-pair 7 xen-boot/src_host fail REGR. vs. 30744
Looking at the log, the reboot was initiated at 2014-10-17 01:48:17
and the serial log shows:
Oct 17 01:48:24.872878 [ 3440.256448] Restarting system.
So the reboot did get started..
And then:
Oct 17 01:52:00.570602 scape-moth login:
The machine (so 4 minutes later) is back on.
Maybe this:
2014-10-17 01:51:13 Z reboot-confirm-booted: waiting 40s...
should be expanded to 360 seconds?
>
> Tests which did not succeed, but are not blocking:
> test-amd64-amd64-libvirt 9 guest-start fail never pass
> test-armhf-armhf-libvirt 9 guest-start fail never pass
> test-amd64-i386-rumpuserxen-i386 1 build-check(1) blocked n/a
> test-amd64-amd64-xl-pcipt-intel 9 guest-start fail never pass
> test-armhf-armhf-xl 10 migrate-support-check fail never pass
> test-amd64-i386-libvirt 9 guest-start fail never pass
> test-amd64-i386-xl-qemuu-winxpsp3-vcpus1 14 guest-stop fail never pass
> test-amd64-i386-xl-qemut-winxpsp3-vcpus1 14 guest-stop fail never pass
> test-amd64-amd64-xl-qemut-winxpsp3 14 guest-stop fail never pass
> test-amd64-i386-xl-qemuu-winxpsp3 14 guest-stop fail never pass
> test-amd64-i386-xl-winxpsp3-vcpus1 14 guest-stop fail never pass
> test-amd64-amd64-xl-winxpsp3 14 guest-stop fail never pass
> test-amd64-i386-xl-winxpsp3 14 guest-stop fail never pass
> test-amd64-i386-xl-qemuu-win7-amd64 14 guest-stop fail never pass
> test-amd64-amd64-xl-qemut-win7-amd64 14 guest-stop fail never pass
> test-amd64-amd64-xl-qemuu-win7-amd64 14 guest-stop fail never pass
> test-amd64-amd64-xl-win7-amd64 14 guest-stop fail never pass
> test-amd64-i386-xl-qemut-win7-amd64 14 guest-stop fail never pass
> test-amd64-i386-xl-win7-amd64 14 guest-stop fail never pass
> test-amd64-amd64-xl-qemuu-winxpsp3 14 guest-stop fail never pass
>
> version targeted for testing:
> xen 9cea500dc0294947b12b8e2479a238acd0e990f2
> baseline version:
> xen 4d57153b52a36183d58e8de6ba613929f906386a
>
> ------------------------------------------------------------
> People who touched revisions under test:
> Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
> Chao Peng <chao.p.peng@linux.intel.com>
> Dongxiao Xu <dongxiao.xu@intel.com>
> Jan Beulich <jbeulich@suse.com>
> Wei Liu <wei.liu2@citrix.com>
> ------------------------------------------------------------
>
> jobs:
> build-amd64 pass
> build-armhf pass
> build-i386 pass
> build-amd64-libvirt pass
> build-armhf-libvirt pass
> build-i386-libvirt pass
> build-amd64-oldkern pass
> build-i386-oldkern pass
> build-amd64-pvops pass
> build-armhf-pvops pass
> build-i386-pvops pass
> build-amd64-rumpuserxen pass
> build-i386-rumpuserxen broken
> test-amd64-amd64-xl pass
> test-armhf-armhf-xl pass
> test-amd64-i386-xl pass
> test-amd64-i386-rhel6hvm-amd pass
> test-amd64-i386-qemut-rhel6hvm-amd pass
> test-amd64-i386-qemuu-rhel6hvm-amd pass
> test-amd64-amd64-xl-qemut-debianhvm-amd64 pass
> test-amd64-i386-xl-qemut-debianhvm-amd64 pass
> test-amd64-amd64-xl-qemuu-debianhvm-amd64 pass
> test-amd64-i386-xl-qemuu-debianhvm-amd64 pass
> test-amd64-i386-freebsd10-amd64 pass
> test-amd64-amd64-xl-qemuu-ovmf-amd64 pass
> test-amd64-i386-xl-qemuu-ovmf-amd64 pass
> test-amd64-amd64-rumpuserxen-amd64 pass
> test-amd64-amd64-xl-qemut-win7-amd64 fail
> test-amd64-i386-xl-qemut-win7-amd64 fail
> test-amd64-amd64-xl-qemuu-win7-amd64 fail
> test-amd64-i386-xl-qemuu-win7-amd64 fail
> test-amd64-amd64-xl-win7-amd64 fail
> test-amd64-i386-xl-win7-amd64 fail
> test-amd64-i386-xl-credit2 pass
> test-amd64-i386-freebsd10-i386 pass
> test-amd64-i386-rumpuserxen-i386 blocked
> test-amd64-amd64-xl-pcipt-intel fail
> test-amd64-i386-rhel6hvm-intel pass
> test-amd64-i386-qemut-rhel6hvm-intel pass
> test-amd64-i386-qemuu-rhel6hvm-intel pass
> test-amd64-amd64-libvirt fail
> test-armhf-armhf-libvirt fail
> test-amd64-i386-libvirt fail
> test-amd64-i386-xl-multivcpu pass
> test-amd64-amd64-pair pass
> test-amd64-i386-pair fail
> test-amd64-amd64-xl-sedf-pin pass
> test-amd64-amd64-xl-sedf pass
> test-amd64-i386-xl-qemut-winxpsp3-vcpus1 fail
> test-amd64-i386-xl-qemuu-winxpsp3-vcpus1 fail
> test-amd64-i386-xl-winxpsp3-vcpus1 fail
> test-amd64-amd64-xl-qemut-winxpsp3 fail
> test-amd64-i386-xl-qemut-winxpsp3 fail
> test-amd64-amd64-xl-qemuu-winxpsp3 fail
> test-amd64-i386-xl-qemuu-winxpsp3 fail
> test-amd64-amd64-xl-winxpsp3 fail
> test-amd64-i386-xl-winxpsp3 fail
>
>
> ------------------------------------------------------------
> sg-report-flight on osstest.cam.xci-test.com
> logs: /home/xc_osstest/logs
> images: /home/xc_osstest/images
>
> Logs, config files, etc. are available at
> http://www.chiark.greenend.org.uk/~xensrcts/logs
>
> Test harness code can be found at
> http://xenbits.xensource.com/gitweb?p=osstest.git;a=summary
>
> broken-step build-i386-rumpuserxen host-install(3)
>
> Not pushing.
>
> ------------------------------------------------------------
> commit 9cea500dc0294947b12b8e2479a238acd0e990f2
> Author: Jan Beulich <jbeulich@suse.com>
> Date: Thu Oct 16 10:08:39 2014 +0200
>
> move XENMEM_get_vnumainfo out of tools-only section of public/memory.h
>
> After all this interface specifically exists for guest kernels to learn
> about their (virtual) topology. I'm sure I made a comment to this
> effect during review, but apparently I then didn't notice that this
> never got carried out.
>
> Signed-off-by: Jan Beulich <jbeulich@suse.com>
> Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com>
>
> commit 4c5e3a8e84f2158487d8f403b3053c52d8ee2dd7
> Author: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
> Date: Thu Oct 16 10:07:56 2014 +0200
>
> docs, amd_ucode: condense amd_ucode notes
>
> Some cleanups to the documentation-
> - Remove unnecessary steps listed to apply ucode using initrd.
> - Condense 'Misc notes' section as well
>
> Suggested-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
> Signed-off-by: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
>
> commit 747187995dd8cb28dcac1db8851d60e54f85f8e4
> Author: Chao Peng <chao.p.peng@linux.intel.com>
> Date: Thu Oct 9 12:02:04 2014 +0800
>
> tools: CMDs and APIs for Cache Monitoring Technology
>
> Introduced some new xl commands to enable/disable Cache Monitoring
> Technology(CMT) feature.
>
> The following two commands is to attach/detach the CMT feature
> to/from a certain domain.
>
> $ xl psr-cmt-attach domid
> $ xl psr-cmt-detach domid
>
> This command is to display the CMT information, such as L3 cache
> occupancy.
>
> $ xl psr-cmt-show cache_occupancy <domid>
>
> Signed-off-by: Dongxiao Xu <dongxiao.xu@intel.com>
> Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
> Acked-by: Wei Liu <wei.liu2@citrix.com>
> (qemu changes not included)
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xen.org
> http://lists.xen.org/xen-devel
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [xen-unstable test] 30769: regressions - trouble: blocked/broken/fail/pass
2014-10-17 20:06 ` Konrad Rzeszutek Wilk
@ 2014-10-20 16:56 ` Ian Jackson
2014-10-21 8:16 ` Ian Campbell
0 siblings, 1 reply; 6+ messages in thread
From: Ian Jackson @ 2014-10-20 16:56 UTC (permalink / raw)
To: Konrad Rzeszutek Wilk; +Cc: xen-devel, xen.org, Ian Campbell
Konrad Rzeszutek Wilk writes ("Re: [Xen-devel] [xen-unstable test] 30769: regressions - trouble: blocked/broken/fail/pass"):
> Is there a particular file that has the output from 'xl migrate'?
The file
http://www.chiark.greenend.org.uk/~xensrcts/logs/30769/test-amd64-i386-xl-qemut-winxpsp3/10.ts-guest-localmigrate.log
would have the output from xl migrate, if it had started. But what
actually happened is that osstest checked, before starting, that the
guest had an active DHCP lease. But it got an empty leases file from
the DHCP server. That is clearly wrong. osstest would have tried a
number of times, but after a while it gave up.
The script I am using to cat the leases file is this one (run from
inetd on the dhcp server):
#!/bin/sh
set -e
cd /var/lib/dhcp3
for f in dhcpd.leases dhcpd.leases~; do
if (exec 3>&2 2>/dev/null <$f 2>&3 3>&- cat); then exit 0; fi
done
echo '# CANNOT OPEN ANY LEASES FILE'
I invented that script the last time I started digging at this
intermittent failure. Since we do not see that comment in
http://www.chiark.greenend.org.uk/~xensrcts/logs/30769/test-amd64-i386-xl-qemut-winxpsp3/dhcpleases-win.nolease
the script seems to have found that one of dhcpd.leases or
dhcpd.leases~ is empty.
I think this means that I need to find a way to reliably strace the
dhcp server to discover what exactly it does to the leases file so
that we can reliably retrieve it.
In any case, this is not a real problem with the software under test.
Ian.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [xen-unstable test] 30769: regressions - trouble: blocked/broken/fail/pass
2014-10-20 16:56 ` Ian Jackson
@ 2014-10-21 8:16 ` Ian Campbell
2014-10-21 13:46 ` Ian Jackson
0 siblings, 1 reply; 6+ messages in thread
From: Ian Campbell @ 2014-10-21 8:16 UTC (permalink / raw)
To: Ian Jackson; +Cc: xen-devel
On Mon, 2014-10-20 at 17:56 +0100, Ian Jackson wrote:
> if (exec 3>&2 2>/dev/null <$f 2>&3 3>&- cat); then exit 0; fi
What are all these terribly exciting redirections (supposed to be)
doing?
> done
> echo '# CANNOT OPEN ANY LEASES FILE'
>
> I invented that script the last time I started digging at this
> intermittent failure. Since we do not see that comment in
>
> http://www.chiark.greenend.org.uk/~xensrcts/logs/30769/test-amd64-i386-xl-qemut-winxpsp3/dhcpleases-win.nolease
>
> the script seems to have found that one of dhcpd.leases or
> dhcpd.leases~ is empty.
And repeatedly (since you said above that osstest would try a few
times). That seems pretty odd/unlikely.
> I think this means that I need to find a way to reliably strace the
> dhcp server to discover what exactly it does to the leases file so
> that we can reliably retrieve it.
Yes :-/
Ian.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [xen-unstable test] 30769: regressions - trouble: blocked/broken/fail/pass
2014-10-21 8:16 ` Ian Campbell
@ 2014-10-21 13:46 ` Ian Jackson
2014-10-21 13:59 ` Ian Campbell
0 siblings, 1 reply; 6+ messages in thread
From: Ian Jackson @ 2014-10-21 13:46 UTC (permalink / raw)
To: Ian Campbell; +Cc: xen-devel
Ian Campbell writes ("Re: [Xen-devel] [xen-unstable test] 30769: regressions - trouble: blocked/broken/fail/pass"):
> On Mon, 2014-10-20 at 17:56 +0100, Ian Jackson wrote:
> > if (exec 3>&2 2>/dev/null <$f 2>&3 3>&- cat); then exit 0; fi
>
> What are all these terribly exciting redirections (supposed to be)
> doing?
It's trying to open the file, without printing a message to stderr if
it fails, but preserving the stderr so that it can be given to cat.
Ian.
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [xen-unstable test] 30769: regressions - trouble: blocked/broken/fail/pass
2014-10-21 13:46 ` Ian Jackson
@ 2014-10-21 13:59 ` Ian Campbell
0 siblings, 0 replies; 6+ messages in thread
From: Ian Campbell @ 2014-10-21 13:59 UTC (permalink / raw)
To: Ian Jackson; +Cc: xen-devel
On Tue, 2014-10-21 at 14:46 +0100, Ian Jackson wrote:
> Ian Campbell writes ("Re: [Xen-devel] [xen-unstable test] 30769: regressions - trouble: blocked/broken/fail/pass"):
> > On Mon, 2014-10-20 at 17:56 +0100, Ian Jackson wrote:
> > > if (exec 3>&2 2>/dev/null <$f 2>&3 3>&- cat); then exit 0; fi
> >
> > What are all these terribly exciting redirections (supposed to be)
> > doing?
>
> It's trying to open the file, without printing a message to stderr if
> it fails, but preserving the stderr so that it can be given to cat.
Wowza!
Now that it's explained I can say I think it is correct, For what it's
worth under the circumstances ;-)
Ian.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2014-10-21 13:59 UTC | newest]
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2014-10-17 2:42 [xen-unstable test] 30769: regressions - trouble: blocked/broken/fail/pass xen.org
2014-10-17 20:06 ` Konrad Rzeszutek Wilk
2014-10-20 16:56 ` Ian Jackson
2014-10-21 8:16 ` Ian Campbell
2014-10-21 13:46 ` Ian Jackson
2014-10-21 13:59 ` Ian Campbell
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