[Bug 1682639] Re: resize2fs hang bug still lingering

[Theodore Ts'o]

I would recommend doing an on-line resize.  That code path should work
for you.

As far as why the off-line resize is hanging, you would need to run it
with debugging symbols under gdb and then stop it and submit a stack
trace so we can see where it is hanging.

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https://bugs.launchpad.net/bugs/1682639

Title:
  resize2fs hang bug still lingering

Status in e2fsprogs package in Ubuntu:
  New

Bug description:
  This bug is flagged numerous times in 1321958 and repeatedly marked
  cleared. It's still there though.

  root at uneca-fs:~# cat /etc/issue | grep -i ubuntu && uname -a && aptitude show e2fsprogs | grep -i version
  Ubuntu 14.04.5 LTS \n \l
  Linux uneca-fs 3.19.0-65-generic #73~14.04.1-Ubuntu SMP Wed Jun 29 21:05:22 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
  Version: 1.42.9-3ubuntu1.3

  root at uneca-fs:~# lvdisplay /dev/vg_data/lv_wodroot | grep "LV Size" && df -h /exports/wodroot
    LV Size                50.82 TiB
  Filesystem                      Size  Used Avail Use% Mounted on
  /dev/mapper/vg_data-lv_wodroot   45T   42T  605G  99% /exports/wodroot

  running "resize2fs -p /dev/mapper/gv_data-lv_wodroot" will cause it to
  hang in ~100% cpu.

  An strace shows that it opens up the device, sets the flags and then
  hangs on a read.

  Unfortunately I can't find older e2fsprogs packages to install :/

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