Hi! I'm using git (describe, v4.7-rc7-16-gcf875cc) kernel, with patch "fix extent buffer bitmap tests on big-endian systems", see [1] (to be able to load/use btrfs module) and getting brtfs filesystem going to read only mode as well getting kernel stack trace in 1 minute after started to copying files to fs. Here's my steps to reproduce: create a ramdisk and file on it root@nvg5120:# mount -t tmpfs tmpfs -o size=8G /ramdisk root@nvg5120:# dd if=/dev/zero of=/ramdisk/disk0 bs=1M count=7000 create btrfs filesystem root@nvg5120:/home/mator/btrfs-progs# ./mkfs.btrfs /ramdisk/disk0 btrfs-progs v4.6.1 See http://btrfs.wiki.kernel.org for more information. Label: (null) UUID: 81500fe0-da01-44dd-8fa6-d43646dd4916 Node size: 16384 Sector size: 8192 Filesystem size: 6.84GiB Block group profiles: Data: single 8.00MiB Metadata: DUP 358.00MiB System: DUP 12.00MiB SSD detected: no Incompat features: extref, skinny-metadata Number of devices: 1 Devices: ID SIZE PATH 1 6.84GiB /ramdisk/disk0 mount it and start to copy files: root@nvg5120:/home/mator/btrfs-progs# mount /ramdisk/disk0 /mnt root@nvg5120:/home/mator/btrfs-progs# mkdir /mnt/1 root@nvg5120:/home/mator/btrfs-progs# chown mator /mnt/1 mator@nvg5120:~$ cnt=0; while true; do let cnt++; echo -n "$cnt "; date; sleep 2; rm -rf /mnt/1/testdir; rsync -a debian-installer linux-2.6 gcc-6.1.0 v7.4.1a /mnt/1/testdir; [ $? != 0 ] && break; done; date 1 Thu Jul 14 12:37:39 MSK 2016 rsync: rename "/mnt/1/testdir/gcc-6.1.0/gcc/testsuite/g++.dg/cpp0x/.variadic13.C.g2qPwQ" -> "gcc-6.1.0/gcc/testsuite/g++.dg/cpp0x/variadic13.C": No such file or directory (2) ... rsync: mkstemp "/mnt/1/testdir/gcc-6.1.0/gcc/testsuite/g++.dg/torture/.pr33134.C.Y2O2ac" failed: Read-only file system (30) rsync error: received SIGINT, SIGTERM, or SIGHUP (code 20) at io.c(504) [generator=3.1.1] rsync: [generator] write error: Broken pipe (32) Thu Jul 14 12:38:37 MSK 2016 root@nvg5120:/home/mator/btrfs-progs# journalctl -k -f -- Logs begin at Mon 2016-04-18 15:59:04 MSK. -- Jul 14 12:37:29 nvg5120 kernel: loop: module loaded Jul 14 12:37:30 nvg5120 kernel: BTRFS: device fsid 81500fe0-da01-44dd-8fa6-d43646dd4916 devid 1 transid 5 /dev/loop0 Jul 14 12:37:30 nvg5120 kernel: BTRFS info (device loop0): disk space caching is enabled Jul 14 12:37:30 nvg5120 kernel: BTRFS info (device loop0): has skinny extents Jul 14 12:37:30 nvg5120 kernel: BTRFS info (device loop0): flagging fs with big metadata feature Jul 14 12:37:30 nvg5120 kernel: BTRFS info (device loop0): creating UUID tree Jul 14 12:38:32 nvg5120 kernel: ------------[ cut here ]------------ Jul 14 12:38:32 nvg5120 kernel: WARNING: CPU: 12 PID: 11815 at fs/btrfs/inode.c:9832 btrfs_rename2+0x300/0x1300 [btrfs] Jul 14 12:38:32 nvg5120 kernel: BTRFS: Transaction aborted (error -2) Jul 14 12:38:33 nvg5120 kernel: Modules linked in: loop btrfs sg n2_rng rng_core n2_crypto flash sha256_generic des_generic autofs4 ext4 crc16 jbd2 mbcache zlib_deflate raid10 raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx xor raid6_pq libcrc32c crc32c_generic raid0 multipath linear dm_mod raid1 md_mod sd_mod mptsas scsi_transport_sas mptscsih scsi_mod mptbase e1000e ptp pps_core [last unloaded: btrfs] Jul 14 12:38:33 nvg5120 kernel: CPU: 12 PID: 11815 Comm: rsync Tainted: G W 4.7.0-rc7+ #45 Jul 14 12:38:33 nvg5120 kernel: Call Trace: Jul 14 12:38:33 nvg5120 kernel: [00000000004671c0] __warn+0xc0/0xe0 Jul 14 12:38:33 nvg5120 kernel: [0000000000467214] warn_slowpath_fmt+0x34/0x60 Jul 14 12:38:33 nvg5120 kernel: [0000000011a8c340] btrfs_rename2+0x300/0x1300 [btrfs] Jul 14 12:38:33 nvg5120 kernel: [00000000005e38f0] vfs_rename+0x630/0x980 Jul 14 12:38:33 nvg5120 kernel: [00000000005e9404] SyS_renameat2+0x484/0x500 Jul 14 12:38:33 nvg5120 kernel: [00000000005e94dc] SyS_rename+0x1c/0x40 Jul 14 12:38:33 nvg5120 kernel: [00000000004061f4] linux_sparc_syscall+0x34/0x44 Jul 14 12:38:33 nvg5120 kernel: ---[ end trace 92caaac5f44fc009 ]--- Jul 14 12:38:34 nvg5120 kernel: BTRFS: error (device loop0) in btrfs_rename:9832: errno=-2 No such entry Jul 14 12:38:34 nvg5120 kernel: BTRFS info (device loop0): forced readonly Thanks. PS: I can provide machine access to debug this issue (as well access to serial management console, if it hangs). 1. http://www.mail-archive.com/linux-btrfs@xxxxxxxxxxxxxxx/msg55792.html -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
