Hi Laszlo, On 16/02/21, Pal, Laszlo wrote: > Hi, > > Thank you. So, I've installed a new centos7 with the same > configuration, old kernel and using btrfs. Then, upgraded the kernel > to 5.11 and all went well, so I thought let's do it on the prod server > Since this is a VM can you clone the disk / partition and attach it to another VM which running a newer kernel and btrfs progs?
This way you can try debugging it without affecting prod server. > Unfortunately when I boot on 5.11 sysroot mount times out and I have > something like this in log > > btrfs open ctree failed So before that `dmesg` doesn't have any relevant logs? > > Any quick fix for this? I'm able to mount btrfs volume using a rescuCD > but I have the same issues, like rm a big file takes 10 minutes.... If you manage to mount the disk in a newer kernel and btrfs progs try creating a new file system to take advantage of the new feature (on creation) - then migrate the data and follow the recommendations mentioned already. Cheers, -- Leonidas Spyropoulos A: Because it messes up the order in which people normally read text. Q: Why is it such a bad thing? A: Top-posting. Q: What is the most annoying thing on usenet and in e-mail?
