On Wed, Sep 04, 2019 at 04:02:24PM +0800, Hongzhi, Song wrote: > Hi , > > > *Kernel:* > > After v5.2-rc1, qemux86-64 > > make -j40 ARCH=x86_64 CROSS_COMPILE=x86-64-gcc > use qemu to bootup kernel > > > *Reproduce:* > > There is a test case failed on btrfs but success on other fs(ext4,ext3), > see attachment. > > > Download attachments: > > gcc test.c -o myout -Wall -lpthread > > copy myout and run.sh to your qemu same directory. > > on qemu: > > ./run.sh > > > I found the block device size with btrfs set 512M will cause the error. > 256M and 1G all success. > > > *Error info:* > > "BTRFS warning (device loop0): could not allocate space for a delete; > will truncate on mount" > > > *Related patch:* > > I use git bisect to find the following patch introduces the issue. > > commit c8eaeac7b734347c3afba7008b7af62f37b9c140 > Author: Josef Bacik <jo...@toxicpanda.com> > Date: Wed Apr 10 15:56:10 2019 -0400 > > btrfs: reserve delalloc metadata differently > ... > >
I meant to reply to this but couldn't find the original thread. The patches I wrote for this merge window were to address this issue. Thanks, Josef
