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Yes Tom you are correct. Thank you!! I am comparing two log files, fairly large ~2000 lines, but I only show little here. What could be different but never should be is the backing device. I should always have 2 twcsapxrqdb1_x1 in each log file but sometimes the OS puts them where it wants to. The problem with my previous code was when I added a new LUN to the VIOS, it would assign where the last vtscsi ID gap existed. Here is a visual of what it currently does using grep -p. Error warning from Test::More. got archive_d1f but expected archive_r1a.
# Failed test 'vios16a-vios16b-map-compare' # at stgpool_lun_compare.plx line 204. # Structures begin differing at: # $got->{0x0000000a}[1] = 'archive_d1f.12dd194548df82b3aa92de +094112214c' # $expected->{0x0000000a}[1] = 'archive_r1a.91f0e02e3948dc9f783597 +0a2d79ddaa' *** LOG 1 *** # grep -p archive /opt/r2configs/vios16a/2015/11/19/lsmap-all.out VTD vtscsi12 Status Available LUN 0x8800000000000000 Backing device archive_d1f.12dd194548df82b3aa92de094112214c Physloc Mirrored N/A VTD vtscsi73 Status Available LUN 0x8100000000000000 Backing device archive_r1a.91f0e02e3948dc9f7835970a2d79ddaa Physloc Mirrored N/A VTD vtscsi74 Status Available LUN 0x8200000000000000 Backing device archive_r1b.e812830370e17478eb79d3b7b10b7e9d Physloc Mirrored N/A VTD vtscsi75 Status Available LUN 0x8300000000000000 Backing device archive_d1a.2e1bd9b5a21aee5120c7b4205e967567 Physloc Mirrored N/A VTD vtscsi76 Status Available LUN 0x8400000000000000 Backing device archive_d1b.e24dedc7fd9a4fddfd2464cce6b20a18 Physloc Mirrored N/A VTD vtscsi77 Status Available LUN 0x8500000000000000 Backing device archive_d1c.cb45fea8aed10491e0df5e9578c9a726 Physloc Mirrored N/A VTD vtscsi78 Status Available LUN 0x8600000000000000 Backing device archive_d1d.b4277aa6b6c4b737084913f78104a90c Physloc Mirrored N/A VTD vtscsi79 Status Available LUN 0x8700000000000000 Backing device archive_d1e.2a7a12d38d59d5ae415d64d5869b1144 Physloc Mirrored N/A *** LOG 2 *** root@r2nim01(/usr/local/scripts)$ # grep -p archive /opt/r2configs/vios16b/2015/11/19/lsmap-all.out VTD vtscsi62 Status Available LUN 0x8100000000000000 Backing device archive_r1a.91f0e02e3948dc9f7835970a2d79ddaa Physloc Mirrored N/A VTD vtscsi66 Status Available LUN 0x8800000000000000 Backing device archive_d1f.12dd194548df82b3aa92de094112214c Physloc Mirrored N/A VTD vtscsi69 Status Available LUN 0x8200000000000000 Backing device archive_r1b.e812830370e17478eb79d3b7b10b7e9d Physloc Mirrored N/A VTD vtscsi70 Status Available LUN 0x8300000000000000 Backing device archive_d1a.2e1bd9b5a21aee5120c7b4205e967567 Physloc Mirrored N/A VTD vtscsi71 Status Available LUN 0x8400000000000000 Backing device archive_d1b.e24dedc7fd9a4fddfd2464cce6b20a18 Physloc Mirrored N/A VTD vtscsi72 Status Available LUN 0x8500000000000000 Backing device archive_d1c.cb45fea8aed10491e0df5e9578c9a726 Physloc Mirrored N/A VTD vtscsi73 Status Available LUN 0x8600000000000000 Backing device archive_d1d.b4277aa6b6c4b737084913f78104a90c Physloc Mirrored N/A VTD vtscsi74 Status Available LUN 0x8700000000000000 Backing device archive_d1e.2a7a12d38d59d5ae415d64d5869b1144 Physloc Mirrored N/A

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