Displaying 1 result from an estimated 1 matches for "8452072".
2012 Mar 25
3
attempt to access beyond end of device and livelock
...he end of the block device [1], potentially causing
dataloss; when this occurs, filesystem writeback becomes catatonic due
to continual resubmission.
The reproducer is quite simple [2]. Hope this proves useful...
Thanks,
Daniel
--- [1]
attempt to access beyond end of device
ram0: rw=129, want=8452072, limit=4096000
...
--- [2]
modprobe brd rd_size=2048000 (or boot with ramdisk_size=2048000)
mkfs.btrfs -m raid0 /dev/ram0 /dev/ram1
mount /dev/ram0 /mnt -o discard
fio testcase
umount /mnt
--- [3] testcase
[global]
directory=/mnt
rw=randread
size=256m
ioengine=libaio
iodepth=4
invalidate=1
dire...