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...oncept incorrectly, or is there something else to configure? At the end I want to get max IO performance with possibility to "overcommit disk space". I know I can use storage "dir", but thought there might be something faster? Thank you very much for a response, Jan -- Jan Hutar Systems Management QA jhutar@redhat.com Red Hat, Inc.

...vm thin for vm. In our hosting in Russia we have >100-150 vps on each node with lvm thin pool on ssd and have locks, >slowdowns and other bad things because of COW. After we switching to >qcow2 files on plain ssd ext4 fs and happy =). > > >2017-11-04 23:21 GMT+03:00 Jan Hutař <jhutar@redhat.com>: >> Hello, >> as usual, I'm few years behind trends so I have learned about LVM thin >> volumes recently and I especially like that your volumes can be "sparse" >> - that you can have 1TB thin volume on 250GB VG/thin pool. >> >> Is it...

Please don't use lvm thin for vm. In our hosting in Russia we have 100-150 vps on each node with lvm thin pool on ssd and have locks, slowdowns and other bad things because of COW. After we switching to qcow2 files on plain ssd ext4 fs and happy =). 2017-11-04 23:21 GMT+03:00 Jan Hutař <jhutar@redhat.com>: > Hello, > as usual, I'm few years behind trends so I have learned about LVM thin > volumes recently and I especially like that your volumes can be "sparse" > - that you can have 1TB thin volume on 250GB VG/thin pool. > > Is it somehow possible to use...