• Storage & Archiving

  LT05 Unarchive Tape Error

  Posted by Luke Allen on May 23, 2019 at 2:01 pm

  (Apologize for a double post, but I posted this in the wrong forum, in Storage)

  Howdy folks, long time reader, first time poster! Be gentle!!!

  I have an LT05 tape that is causing me some issues and I was wondering if anyone here has any suggestions on how to fix?

  I’m unarching a tape, which runs fine, untill it gets to a single file, which causes the tape to error and quit. The tape has around 1.3 TB of data, but crashes out after restoring just a few hundred GBs

  Here is the last few lines of my logs

  …
  -rwxrwxrwx tech/domain users 42813440 2015-02-05 22:23:00 mnt/vol1/work/2014_Active/691_REDACTED_IDENTITY/_DELIVERY/MASTER/v002/691_RDI_15_4K/691_RDI_15_4K_00021.dpx
  -rwxrwxrwx tech/domain users 85651205 2015-02-05 22:23:00 mnt/vol1/work/2014_Active/691_REDACTED_IDENTITY/_DELIVERY/MASTER/v002/691_RDI_15_4K/691_RDI_15_4K_00021.exr
  -rwxrwxrwx tech/domain users 42813440 2015-02-05 22:23:03 mnt/vol1/work/2014_Active/691_REDACTED_IDENTITY/_DELIVERY/MASTER/v002/691_RDI_15_4K/691_RDI_15_4K_00022.dpx
  -rwxrwxrwx tech/domain users 85651205 2015-02-05 22:23:02 mnt/vol1/work/2014_Active/691_REDACTED_IDENTITY/_DELIVERY/MASTER/v002/691_RDI_15_4K/691_RDI_15_4K_00022.exr
  dd: reading `/dev/nst0′: Input/output error
  0+75720 records in
  0+75720 records out
  39699087360 bytes (40 GB) copied, 285.675 seconds, 139 MB/s
  tar: Unexpected EOF in archive
  tar: Error is not recoverable: exiting now

  I also have a script I usually use for archiving and unarchiving and it says

  usr/local/archive/tar: /dev/nst0: Cannot read: Input/output error
  /usr/local/archive/tar: Too many errors, quitting
  /usr/local/archive/tar: Error is not recoverable: exiting now
  tar error 2

  I’ve tried options such as

  –exlude – Excluding the issue file type
  –ignore zerod
  -i
  –ignore-command-error
  But everytime they hit the bad file, it stops.

  Is it possible to skip problematic files on LTO? Is there a way of recovering the rest of the tape? Any suggestions would be greatly appreciated.

  Luke Allen replied 7 years, 2 months ago 1 Member · 0 Replies
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