[ovirt-users] SUCCESS / error

[Ondřej Svoboda]

Hi,

in general, programs use stderr (which you see after <err>) to output 
miscellaneous information. You can see here that "dd" is an example of 
this behaviour. While it exited successfully, it also wrote 
non-essential information to its secondary output. You do not see stdout 
(the primary channel) in the log because "dd" doesn't use it in this case.

Cheers,
Ondra

On 2.3.2016 17:41, paf1 at email.cz wrote:
> Hi, next explanation
> VDSM log give me following message
> Is this live checking for storage availability ? If "SUCCESS" then why 
> "<err> " ???
>
> regs.
> Pavel
>
> Thread-233::DEBUG::2016-03-02 
> 17:31:55,275::fileSD::262::Storage.Misc.excCmd::(getReadDelay) 
> SUCCESS: <err> = '0+1 records in\n0+1 records out\n346 bytes (346 B) 
> copied, 0.00022692 s, 1.5 MB/s\n'; <rc> = 0
> Thread-299::DEBUG::2016-03-02 
> 17:31:57,870::fileSD::262::Storage.Misc.excCmd::(getReadDelay) 
> /usr/bin/dd 
> if=/rhev/data-center/mnt/glusterSD/localhost:_2KVM12__P4/300e9ac8-3c2f-4703-9bb1-1df2130c7c97/dom_md/metadata 
> iflag=direct of=/dev/null bs=4096 count=1 (cwd None)
> Thread-299::DEBUG::2016-03-02 
> 17:31:57,886::fileSD::262::Storage.Misc.excCmd::(getReadDelay) 
> SUCCESS: <err> = '0+1 records in\n0+1 records out\n734 bytes (734 B) 
> copied, 0.000391403 s, 1.9 MB/s\n'; <rc> = 0
> Thread-209::DEBUG::2016-03-02 
> 17:31:58,301::fileSD::262::Storage.Misc.excCmd::(getReadDelay) 
> /usr/bin/dd 
> if=/rhev/data-center/mnt/glusterSD/localhost:_1KVM12-BCK/0fcad888-d573-47be-bef3-0bc0b7a99fb7/dom_md/metadata 
> iflag=direct of=/dev/null bs=4096 count=1 (cwd None)
> Thread-209::DEBUG::2016-03-02 
> 17:31:58,318::fileSD::262::Storage.Misc.excCmd::(getReadDelay) 
> SUCCESS: <err> = '0+1 records in\n0+1 records out\n335 bytes (335 B) 
> copied, 0.00048095 s, 697 kB/s\n'; <rc> = 0
> Thread-198::DEBUG::2016-03-02 
> 17:31:58,885::fileSD::262::Storage.Misc.excCmd::(getReadDelay) 
> /usr/bin/dd 
> if=/rhev/data-center/mnt/installshare:_DATA3/7f334c9d-ac01-4b2a-9f29-af1d2f24c3e0/dom_md/metadata 
> iflag=direct of=/dev/null bs=4096 count=1 (cwd None)
>
>  dist = RHEL - 7 - 2.1511
> kernel = 3.10.0 - 327.10.1.el7.x86_64
> KVM = 2.3.0 - 29.1.el7
> libvirt = libvirt-1.2.17-13.el7_2.3
> vdsm = vdsm-4.16.30-0.el7
> GlusterFS = glusterfs-3.7.8-1.el7
>
>
> _______________________________________________
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> Users at ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users

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