From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Helmut Hullen" Subject: Re: btrfs balancing start - and stop? Date: 01 Apr 2011 21:26:00 +0200 Message-ID: References: <1301682810.11424.5.camel@sc.lan> Reply-To: helmut@hullen.de Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII To: linux-btrfs@vger.kernel.org Return-path: In-Reply-To: <1301682810.11424.5.camel@sc.lan> List-ID: Hallo, Stephane, Du meintest am 01.04.11: >> balancing about 2 TByte needed about 20 hours. > [...] > I've got a balance running since Monday on a 9TB volume (3.5 of which > are used, 3.2 allegedly free), showing no sign of finishing soon. > Should I be worried? > Using /proc/sys/vm/block_dump, I can see it's seeking all over the > place, which is probably why throughput is not high. I can also see > it writing several times to the same sectors. Hugo has explained the limits of regarding dmesg | grep relocating or (more simple) the last lines of "dmesg" and looking for the "relocating" lines. But: what do these lines tell now? What is the (pessimistic) estimation when you extrapolate the data? (please excuse my gerlish) Viele Gruesse! Helmut