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    Hi, next explanation<br>
    VDSM log give me following message<br>
    Is this live checking for storage availability ? If "SUCCESS"  then
    why "&lt;err&gt; " ???<br>
    <br>
    regs.<br>
    Pavel<br>
    <br>
    Thread-233::DEBUG::2016-03-02
    17:31:55,275::fileSD::262::Storage.Misc.excCmd::(getReadDelay)
    SUCCESS: &lt;err&gt; = '0+1 records in\n0+1 records out\n346 bytes
    (346 B) copied, 0.00022692 s, 1.5 MB/s\n'; &lt;rc&gt; = 0<br>
    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)<br>
    Thread-299::DEBUG::2016-03-02
    17:31:57,886::fileSD::262::Storage.Misc.excCmd::(getReadDelay)
    SUCCESS: &lt;err&gt; = '0+1 records in\n0+1 records out\n734 bytes
    (734 B) copied, 0.000391403 s, 1.9 MB/s\n'; &lt;rc&gt; = 0<br>
    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)<br>
    Thread-209::DEBUG::2016-03-02
    17:31:58,318::fileSD::262::Storage.Misc.excCmd::(getReadDelay)
    SUCCESS: &lt;err&gt; = '0+1 records in\n0+1 records out\n335 bytes
    (335 B) copied, 0.00048095 s, 697 kB/s\n'; &lt;rc&gt; = 0<br>
    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)<br>
    <br>
     dist = RHEL - 7 - 2.1511<br>
    kernel = 3.10.0 - 327.10.1.el7.x86_64<br>
    KVM = 2.3.0 - 29.1.el7<br>
    libvirt = libvirt-1.2.17-13.el7_2.3<br>
    vdsm = vdsm-4.16.30-0.el7<br>
    GlusterFS = glusterfs-3.7.8-1.el7<br>
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