Some more data: After unmounting the read-only mounted partition, this notice appears in the kernel log:
VFS: Busy inodes after unmount of sdb. Self-destruct in 5 seconds. Have a nice day... Here is a the btrfs check output.. btrfs check --repair seems to fix the issues: # btrfs check /dev/sdb Checking filesystem on /dev/sdb UUID: 4b0fdfb4-8d9e-43e4-b51c-15446a792d9b checking extents checking free space cache block group 414527258624 has wrong amount of free spacefailed to load free space cache for block group 414527258624 checking fs roots root 5 inode 444968 errors 400, nbytes wrong root 5 inode 446183 errors 400, nbytes wrong root 5 inode 455719 errors 400, nbytes wrong root 5 inode 466667 errors 400, nbytes wrong root 5 inode 468041 errors 400, nbytes wrong root 5 inode 489381 errors 400, nbytes wrong root 5 inode 512320 errors 400, nbytes wrong root 5 inode 521936 errors 400, nbytes wrong root 5 inode 522017 errors 400, nbytes wrong root 5 inode 527486 errors 400, nbytes wrong root 5 inode 528830 errors 400, nbytes wrong root 5 inode 548638 errors 400, nbytes wrong root 5 inode 555329 errors 400, nbytes wrong root 5 inode 571448 errors 400, nbytes wrong root 5 inode 573600 errors 400, nbytes wrong root 5 inode 589105 errors 400, nbytes wrong root 5 inode 590616 errors 400, nbytes wrong root 5 inode 595230 errors 400, nbytes wrong root 5 inode 610324 errors 400, nbytes wrong root 5 inode 611844 errors 400, nbytes wrong root 5 inode 611972 errors 400, nbytes wrong root 5 inode 612313 errors 400, nbytes wrong root 5 inode 613156 errors 400, nbytes wrong root 5 inode 614017 errors 400, nbytes wrong root 5 inode 616045 errors 400, nbytes wrong root 5 inode 619160 errors 400, nbytes wrong root 5 inode 626453 errors 400, nbytes wrong root 5 inode 626648 errors 400, nbytes wrong root 5 inode 629338 errors 400, nbytes wrong root 5 inode 633583 errors 400, nbytes wrong root 5 inode 638616 errors 400, nbytes wrong root 5 inode 639023 errors 400, nbytes wrong root 5 inode 640373 errors 400, nbytes wrong root 5 inode 641524 errors 400, nbytes wrong root 5 inode 641586 errors 400, nbytes wrong root 5 inode 645090 errors 400, nbytes wrong root 5 inode 655241 errors 400, nbytes wrong root 5 inode 674139 errors 400, nbytes wrong found 726034010941 bytes used err is 1 total csum bytes: 707524756 total tree bytes: 1528659968 total fs tree bytes: 453296128 total extent tree bytes: 243171328 btree space waste bytes: 253506582 file data blocks allocated: 724722012160 referenced 848544292864 btrfs-progs v4.0 regards Martin -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
