From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 22 Jan 2020 11:01:43 -0500 From: Mike Snitzer Message-ID: <20200122160142.GA20728@redhat.com> References: <5f84e991-7740-a5c1-300a-682fb46237c7@mnl.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <5f84e991-7740-a5c1-300a-682fb46237c7@mnl.de> Subject: Re: [linux-lvm] Deeply impressed Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Michael Lipp Cc: LVM general discussion and development On Wed, Jan 22 2020 at 10:40am -0500, Michael Lipp wrote: > Just for once, I wanted to state that I am deeply impressed by the work > done with LVM. I have just just copied all my data from my old RAID to > my new RAID while continuing to work with the data using pvmove. > Compared with what I had to do several years ago, this was a great > experience. I know, of course, that professional operators do this "all > day", but doing it yourself for once felt great. > > Just one question, though. I couldn't find anything about using pvmove > together with lvm cache. So to make sure, I removed the SSD caching > before pvmove and added the caching again afterwards. Would it have been > safe to leave the caching active during the pvmove? No, fairly certain pvmove wouldn't have allowed the caching layer. So you did the correct sequence.