** Tags added: 11.10 cifs ** Tags removed: cifs
** Description changed: Ubuntu 11.10 I've noticed an anomaly when running a program that creates a small number of output files on a CIFS network share. One of the output files appears to be corrupted: the first line contains a long string of ^@ (ASCII NULL), followed by the expected data (tab-delimited numeric values). The other lines appear to be normal, but there aren't as many as expected (6 instead of 1,000). + + Sample of the output: + + ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ + 0.0171336 0.0212791 0.129199 0.10037 0.0326974 0.0290939 0.0201371 0.0603848 0.0345106 0.00430885 0.108036 0.0365998 0.0429855 0.0224048 0.0496568 0.0368914 0.0141055 0.00231577 + 0.00796571 0.0263493 0.0113408 0.0147399 0.00599318 0.0197169 0.00563507 0.0136991 0.0534332 0.038746 0.000604263 0.050864 0.0532265 0.0159351 0.037813 0.0484131 0.0131025 0.098634 + 0.0256822 0.012495 0.0984072 0.00511325 0.16901 0.0453786 0.13176 0.0152235 0.0217565 0.0238086 0.0039197 0.0338673 0.00393313 0.0829335 0.0136131 0.10796 0.10842 0.0515564 0.118125 + 0.00660697 0.00292382 0.0905625 0.0461118 0.000703248 0.0315086 0.0288653 0.0880219 0.0312076 0.0140861 0.00304921 0.0580084 0.0442074 0.0772593 0.000842658 0.0174914 0.0183774 0.102918 + 0.000778389 0.0138765 0.0245259 0.0248157 0.0639402 0.0517471 0.000249088 0.0851772 0.00481187 0.0284765 0.00991917 0.0298476 0.0118467 0.0152653 0.0114918 0.0259155 0.0603263 0.004833 + + (each line extends beyond, but this is the vim as presented in vim with + wrapping disabled) Interestingly, if I run the program with the top 100 attributes, resulting in an output file with 100 lines, I see no issues. But if I run with the top 1,000 (output file with 1,000 lines), the odd ^@ characters appear. If I run the same program and save the output files to the local drive, the aforementioned file is "valid": no ^@ characters and the correct number of lines. This leads me to believe that it has something to do with the CIFS-mounted network share. The share is mounted via CIFS from our NAS, a Sun Storage 7110. Note: we've recently upgraded our servers to 11.10, and were previously running 10.04. This issue wasn't present in 10.04. One of our desktops is running 11.04, and this issue doesn't manifest itself there either (same program, input data, writing to the network share). It only occurs on servers/desktops running 11.10. ** Description changed: Ubuntu 11.10 I've noticed an anomaly when running a program that creates a small number of output files on a CIFS network share. One of the output files appears to be corrupted: the first line contains a long string of ^@ (ASCII NULL), followed by the expected data (tab-delimited numeric values). The other lines appear to be normal, but there aren't as many as expected (6 instead of 1,000). Sample of the output: ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@ - 0.0171336 0.0212791 0.129199 0.10037 0.0326974 0.0290939 0.0201371 0.0603848 0.0345106 0.00430885 0.108036 0.0365998 0.0429855 0.0224048 0.0496568 0.0368914 0.0141055 0.00231577 + 0.0171336 0.0212791 0.129199 0.10037 0.0326974 0.0290939 0.0201371 0.0603848 0.0345106 0.00430885 0.108036 0.0365998 0.0429855 0.0224048 0.0496568 0.0368914 0.0141055 0.00231577 0.00796571 0.0263493 0.0113408 0.0147399 0.00599318 0.0197169 0.00563507 0.0136991 0.0534332 0.038746 0.000604263 0.050864 0.0532265 0.0159351 0.037813 0.0484131 0.0131025 0.098634 - 0.0256822 0.012495 0.0984072 0.00511325 0.16901 0.0453786 0.13176 0.0152235 0.0217565 0.0238086 0.0039197 0.0338673 0.00393313 0.0829335 0.0136131 0.10796 0.10842 0.0515564 0.118125 + 0.0256822 0.012495 0.0984072 0.00511325 0.16901 0.0453786 0.13176 0.0152235 0.0217565 0.0238086 0.0039197 0.0338673 0.00393313 0.0829335 0.0136131 0.10796 0.10842 0.0515564 0.118125 0.00660697 0.00292382 0.0905625 0.0461118 0.000703248 0.0315086 0.0288653 0.0880219 0.0312076 0.0140861 0.00304921 0.0580084 0.0442074 0.0772593 0.000842658 0.0174914 0.0183774 0.102918 0.000778389 0.0138765 0.0245259 0.0248157 0.0639402 0.0517471 0.000249088 0.0851772 0.00481187 0.0284765 0.00991917 0.0298476 0.0118467 0.0152653 0.0114918 0.0259155 0.0603263 0.004833 - (each line extends beyond, but this is the vim as presented in vim with + (each line extends beyond, but this is the file as viewed in vim with wrapping disabled) Interestingly, if I run the program with the top 100 attributes, resulting in an output file with 100 lines, I see no issues. But if I run with the top 1,000 (output file with 1,000 lines), the odd ^@ characters appear. If I run the same program and save the output files to the local drive, the aforementioned file is "valid": no ^@ characters and the correct number of lines. This leads me to believe that it has something to do with the CIFS-mounted network share. The share is mounted via CIFS from our NAS, a Sun Storage 7110. Note: we've recently upgraded our servers to 11.10, and were previously running 10.04. This issue wasn't present in 10.04. One of our desktops is running 11.04, and this issue doesn't manifest itself there either (same program, input data, writing to the network share). It only occurs on servers/desktops running 11.10. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/879228 Title: files written to CIFS share are sometimes corrupted To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/879228/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
