Mark 5 module recovery

Combined revision comparison

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The disks of the module should appear as blank drives without partitions:

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A recovery script now found in the DiFX repository (https://svn.atnf.csiro.au/difx/sites/MPIfR/mark5/mark5_scan_recovery.py) can be used to gather data from the drives, and write out recovered VDIF or Mark5B data files. A fill pattern (0x11223344) is inserted in place of missing data, identical to the formerly proper behaviour of the old Conduant card firmware.

Data from the drives can be recovered as follows:

dhcp30222:/mnt/sshfs # ~/mark5_scan_recovery.py /dev/sd{b,c,d,e,f,g}
Module has VSN NRAO+338/16000/2048
Module has 233 scans in the Mark5B/5C-type user directory
The original module seems to have recorded onto 8 disks
Module disk #0 --> None
Module disk #1 --> <open file '/dev/sdb', mode 'rb' at 0x7feb35d72150>
Module disk #2 --> <open file '/dev/sdc', mode 'rb' at 0x7feb35d721e0>
Module disk #3 --> <open file '/dev/sde', mode 'rb' at 0x7feb35d72300>
Module disk #4 --> None
Module disk #5 --> <open file '/dev/sdd', mode 'rb' at 0x7feb35d72270>
Module disk #6 --> <open file '/dev/sdf', mode 'rb' at 0x7feb35d72390>
Module disk #7 --> <open file '/dev/sdg', mode 'rb' at 0x7feb35d72420>
output_write() at module offset 73426876176, completed scan 0, leftover 37960 byte to next scan
output_write() at module offset 129076726760, completed scan 1, leftover 34400 byte to next scan
output_write() at module offset 208300471928, completed scan 2, leftover 11824 byte to next scan
..

dhcp30222:/mnt/sshfs # ls -al recovered | less
total 219278081
drwxr-xr-x 2 oper oper         233 Jan 23 16:31 .
drwxr-xr-x 4 oper oper           7 Jan 23 16:31 ..
-rw-r--r-- 1 oper oper 73426874368 Jan 23 16:45 GG081C_HN_No0143.vdif
-rw-r--r-- 1 oper oper 55649820672 Jan 23 16:55 GG081C_HN_No0173.vdif
-rw-r--r-- 1 oper oper 79223713792 Jan 23 17:10 GG081C_HN_No0174.vdif
-rw-r--r-- 1 oper oper 16206467072 Jan 23 17:13 GG081C_HN_No0175.vdif
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Other changes:

1. /body/p[6]/a/@class: " external" ⇒ "external"