<html> <head> <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> <div class="moz-cite-prefix">On 10/04/17 12:03, Zdenek Kabelac wrote: </div> <blockquote cite="mid:38e06f2a-5af9-6469-ec2c-5bde2c1b199b@gmail.com" type="cite">Dne 10.4.2017 v 11:29 lejeczek napsal(a): <blockquote type="cite">hi there I could not extend my stripped LV, had 3 stripes and wanted to add one more. Only way LVM let me do it was where I ended up with this: --- Segments --- Logical extents 0 to 751169: Type striped Stripes 3 Stripe size 16.00 KiB Stripe 0: Physical volume /dev/sdd Physical extents 0 to 250389 Stripe 1: Physical volume /dev/sde Physical extents 0 to 250389 Stripe 2: Physical volume /dev/sdc Physical extents 0 to 250389 Logical extents 751170 to 1001559: Type linear Physical volume /dev/sdf Physical extents 0 to 250389 1st question - was this really the only way LVM would extend? 2nd - is there performance penalty with segments like above vs one stripped segment? </blockquote> Hi Not really sure what you aim to do. If you have LV segment with 3 stripes - you have to keep also extension using 3 stripes - you can't have 1st. halve of LV spanning 3 disk and add there a new LV segment as linear - as listed in this post. Both segments must by striped. Regards Zdenek </blockquote> I had 3 stripe LV, you know, three PVs, and wanted the LV to have 4 stripes, wanted to add 4th PV, you can see it from above lvdisplay. I tried these and each time it errored: $ lvextend -v -i 4 -l+100%free dellH200.InternalB/0 $ lvextend -v -i 4 -l+100%pv dellH200.InternalB/0 /dev/sdf $ lvextend -i 4 -l 100%vg dellH200.InternalB/0 I did have only one segment, an LV spanning 100%vg with 100%each-pv. And the above is the result of: $ lvextend -i 1 -l +100%free dellH200.InternalB/0 /dev/sdf so, either I'm not getting it right or a stripped LV cannot be extended this way - then: is there performance penalty with segments like above vs one stripped segment? </body> </html>