Comment 6 for bug 1423796

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George Moutsopoulos (gmoutso) wrote :

OK, I managed! I had to add more modules

sudo echo "dm_cache" >> /etc/initramfs-tools/modules
sudo echo "dm_cache_mq" >> /etc/initramfs-tools/modules
sudo echo "dm_persistent_data" >> /etc/initramfs-tools/modules
sudo echo "dm_bufio" >> /etc/initramfs-tools/modules

plus, add cache_check as in


This is how I set up the lvmcache
sudo vgextend LinuxVG /dev/sdb2
sudo lvcreate -L 10G -n rootCacheLV LinuxVG /dev/sdb2
sudo lvcreate -L 24M -n rootCacheMetaLV LinuxVG /dev/sdb2
sudo lvcreate -L 10G -n homeCacheLV LinuxVG /dev/sdb2
sudo lvcreate -L 24M -n homeCacheMetaLV LinuxVG /dev/sdb2
sudo lvconvert --type cache-pool --poolmetadata LinuxVG/rootCacheMetaLV --cachemode writethrough LinuxVG/rootCacheLV
sudo lvconvert --type cache-pool --poolmetadata LinuxVG/homeCacheMetaLV --cachemode writethrough LinuxVG/homeCacheLV
sudo lvconvert --type cache --cachepool LinuxVG/rootCacheLV LinuxVG/rootLV
sudo lvconvert --type cache --cachepool LinuxVG/homeCacheLV LinuxVG/homeLV

where LinuxVG has the root at rootLV and home at homeLV and sdb2 is an SSD