[Bug 1484289] Re: hdparm 9.43 -> 9.45+ update request

racitup 1484289 at bugs.launchpad.net
Fri Mar 25 15:30:17 UTC 2016


I have found a bug in hdparm v9.43 with the --fibmap option.
For certain filesystems it returns incorrect values when compared with filefrag, example below for vfat. Notice the factor of 8 difference between number of extent sectors: 125092 vs 1000736.
I have reported this to Mark Lord (author) and am awaiting feedback whether this has been fixed in a later version.

hdparm --fibmap ./edisk5/mnt.erox9t4T/emptyspace.zeros, out=./edisk5/mnt.erox9t4T/emptyspace.zeros:
filesystem blocksize 512, begins at LBA 4102144; assuming 512 byte sectors.
byte_offset begin_LBA end_LBA sectors
0 4125406 4250497 125092, err=, ret=0

filefrag -b512 -e ./edisk5/mnt.erox9t4T/emptyspace.zeros, out=Filesystem type is: 4d44
File size of ./edisk5/mnt.erox9t4T/emptyspace.zeros is 512376832 (1000736 blocks of 512 bytes)
ext: logical_offset: physical_offset: length: expected: flags:
0: 0.. 1000735: 186096.. 1186831: 1000736: 1186824: merged,eof
./edisk5/mnt.erox9t4T/emptyspace.zeros: 1 extent found, err=, ret=0

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https://bugs.launchpad.net/bugs/1484289

Title:
  hdparm 9.43 -> 9.45+ update request

Status in hdparm package in Ubuntu:
  Triaged
Status in hdparm package in Debian:
  Fix Released

Bug description:
  This is, in fact, NOT a real bug report.

  However, as Manfred asked me to report it here anyway (https://answers.launchpad.net/ubuntu/+source/hdparm/+question/270310 ) I will do so. 
  (Let alone because the genuine Debian OS is also still at 9.43...)

  Yes, (*)Ubuntu is VERY much behind with hdparm, quasi-stuck at 9.43
  for more than 2 years. This is a bit much.

  If you'd like to know why it may be sensible to update, here's an
  example:

  https://sourceforge.net/p/hdparm/bugs/51/

  --read-sector is byte-swapped in every version <= 9.43. Mark fixed
  this in 9.45+. unfortunately you guys were asleep with both eyes open
  and still haven't considered a tool update for 2 + years :)

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