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vgs adds to .cache but doesn't remove

linux-lvm Tom Graves 2 participants 2 messages Aug 19, 2010

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Tom Graves

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Sorry if everyone already got this. I don't see it in the archives and I just subscribed to the mailing list itself..

Hello all,

I am having an issue where it seems that the vgs command is adding new LV's to the /etc/lvm/cache/.cache but they never get removed when the LV's are deleted.

Basically this eventually causes me to run out of space in /var/log because dmeventd is reading the cache file and trying to stat all the removed LV's which leads to the log files having a bunch of cannot stat lv because it was one that was removed.

Here is what I do:

-bash-3.2$ sudo lvcreate --name tom2323tt --size 20G sys -bash-3.2$ sudo /usr/sbin/vgs --separator : --noheadings --units b --unbuffered --nosuffix --options vg_size,vg_free sys -bash-3.2$ sudo cat /etc/lvm/cache/.cache | grep tom
# This file is automatically maintained by lvm.

                "/dev/mapper/sys-tom2323tt",
                "/dev/sys/tom2323tt",

-bash-3.2$ sudo lvremove /dev/sys/tom2323tt
-bash-3.2$ sudo /usr/sbin/vgs --separator : --noheadings --units b --unbuffered --nosuffix --options vg_size,vg_free sys
497717084160:436295696384
-bash-3.2$ sudo cat /etc/lvm/cache/.cache | grep tom
# This file is automatically maintained by lvm.

                "/dev/mapper/sys-tom2323tt",
                 "/dev/sys/tom2323tt",

This is running rhel5.4 with lvm2-2.02.46-8.el5.

I know that do get cleaned up by vgscan but we currently aren't running it.

Does anyone know why they aren't deleted? Am I missing something?

Thanks,
Tom

#1 lore raw
Quoted 3 lines · Tom Graves

I am having an issue where it seems that the vgs command is adding new LV's to the /etc/lvm/cache/.cache but they never get removed when the LV's are deleted.

This might be a bug we fixed in 2.02.67.

Alasdair