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