[SOLVED] /usr/sbin/cache_check missing from 14.2 and current(?)

wowbaggerHU · 02-15-2017, 02:50 PM

After experimenting with LVM cache, I rebooted my machine, and my /home LV (which I converted to cached) did not become available, and was thus not usable/mountable in any way.

Code:

root@mac-mini:~# lvchange -a y mac-mini/home-lv
File descriptor 7 (pipe:[777]) leaked on lvchange invocation. Parent PID 1481: bash
  /usr/sbin/cache_check: execvp failed: Nincs ilyen fájl vagy könyvtár
  Check of pool mac-mini/home-lv-cache failed (status:2). Manual repair required!
root@mac-mini:~#

This message suggests that the /usr/sbin/cache_check binary is not present on the system, which is actually the case.
After looking in the 14.2 and current MANIFEST.bz2, I was unable to find any trace of it.

I also found a similar Debian bug:
https://bugs.debian.org/cgi-bin/bugr...cgi?bug=773731

wowbaggerHU · 02-15-2017, 02:51 PM

I will try proceeding by following the steps mentioned here:
http://majek.mamy.to/en/dm-cache-in-slackware/

wowbaggerHU · 02-15-2017, 04:23 PM

If you don't have the your root file system on the cached LV, then you are in luck, because you have it relatively easy.
All you have to do is the following:

Code:

# wget "https://github.com/jthornber/thin-provisioning-tools/archive/v0.6.3.tar.gz"
# mv v0.6.3.tar.gz thin-provisioning-tools-0.6.3.tar.gz
# tar xzf thin-provisioning-tools-0.6.3.tar.gz
# cd thin-provisioning-tools-0.6.3/
# autoreconf
# CFLAGS="-O2 -fPIC" ./configure --prefix=/usr --libdir=/lib64 --mandir=/usr/man --build=x86_64-slackware-linux
# make
# slacktrack -Qp /root/thin-provisioning-tools-0.6.3-x86_64-janos1.txz make install

After this, you can run

Code:

lvchange -a y LVNAME

without any problems, and the lv should be successfully auto-checked and available even after reboots.