Hello, Running on Linux 3.5.0, with the latest btrfs-progs from today. I was doing some tests with my 7 devices, and mkfs.btrfs segfaults when executed twice, creating a filesystem with 3+ devices: # ./mkfs.btrfs /dev/sdc /dev/sdd /dev/sde WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL WARNING! - see http://btrfs.wiki.kernel.org before using adding device /dev/sdd id 2 adding device /dev/sde id 3 fs created label (null) on /dev/sdc nodesize 4096 leafsize 4096 sectorsize 4096 size 8.19TB Btrfs Btrfs v0.19 # ./mkfs.btrfs /dev/sdc /dev/sdd /dev/sde WARNING! - Btrfs Btrfs v0.19 IS EXPERIMENTAL WARNING! - see http://btrfs.wiki.kernel.org before using adding device /dev/sdd id 2 Segmentation fault If executed a third time, everything is fine and the filesystem is created normally. The segfault doesn't happen with 2 or less devices (but still happens with 4 or more devices). Backtrace: #0 0x00007fba810faaf0 in strcmp () from /lib/libc.so.6 #1 0x000000000041e17c in device_list_add (path=0x7fff10a8a810 "/dev/sdd", disk_super=0xac9570, devid=2, fs_devices_ret=0x7fff10a8ac88) at volumes.c:119 #2 0x000000000041e556 in btrfs_scan_one_device (fd=11, path=0x7fff10a8a810 "/dev/sdd", fs_devices_ret=0x7fff10a8ac88, total_devs=0x7fff10a8ac80, super_offset=65536) at volumes.c:221 #3 0x000000000042607b in btrfs_scan_block_devices (run_ioctl=1) at utils.c:1209 #4 0x0000000000425bf0 in btrfs_scan_for_fsid (fs_devices=0xab5020, total_devs=7, run_ioctls=1) at utils.c:1057 #5 0x000000000042551e in check_mounted_where (fd=9, file=0x7fff10a8ca01 "/dev/sde", where=0x0, size=0, fs_dev_ret=0x0) at utils.c:843 #6 0x0000000000425494 in check_mounted (file=0x7fff10a8ca01 "/dev/sde") at utils.c:820 #7 0x000000000042be74 in main (ac=4, av=0x7fff10a8b058) at mkfs.c:1402 Thanks. -- Cyril B. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
