** Description changed: + Impact: Data corruption is seen when using the hio driver with 4.8 and + later kernels. + + Fix: Patch to fix incorrect use of enumerated values as bitmasks. + + Test case: See below. + + Regression potential: Very low. Changes are simple and Obviously Correct + (TM), and they only affect the hio driver. + + --- + We are seeing data corruption issues using the hio driver with kernel 4.10.0 # uname -a Linux arbok 4.10.0-26-generic #30~16.04.1-Ubuntu SMP Tue Jun 27 09:40:14 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux Making xfs fails: root@arbok:~# mkfs.xfs /dev/hioa meta-data=/dev/hioa isize=512 agcount=4, agsize=48835584 blks - = sectsz=512 attr=2, projid32bit=1 - = crc=1 finobt=1, sparse=0 + = sectsz=512 attr=2, projid32bit=1 + = crc=1 finobt=1, sparse=0 data = bsize=4096 blocks=195342336, imaxpct=25 - = sunit=0 swidth=0 blks + = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 ftype=1 log =internal log bsize=4096 blocks=95382, version=2 - = sectsz=512 sunit=0 blks, lazy-count=1 + = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 bad magic number bad magic number Metadata corruption detected at xfs_sb block 0x0/0x200 libxfs_writebufr: write verifer failed on xfs_sb bno 0x0/0x200 - - The drive appears to be healthy. Firmware has been upgraded to ver 656: + The drive appears to be healthy. Firmware has been upgraded to ver 656: root@arbok:~# hio_info -d /dev/hioa hioa Serial number: 022XWV10G2000325 - Size(GB): 800 - Max size(GB): 800 - Hardware version: 1.0 - Firmware version: 656 - Driver version: 2.1.0.28 - Work mode: MLC - Run time (sec.): 8910490 - Total read(MB): 8499 - Total write(MB): 0 - Lifetime remaining: 99.844% - Max bad block rate: 0.167% - Health: OK - Comment: NA + Size(GB): 800 + Max size(GB): 800 + Hardware version: 1.0 + Firmware version: 656 + Driver version: 2.1.0.28 + Work mode: MLC + Run time (sec.): 8910490 + Total read(MB): 8499 + Total write(MB): 0 + Lifetime remaining: 99.844% + Max bad block rate: 0.167% + Health: OK + Comment: NA No relevant entries about read/write errors in dmesg - Also just copying 8G random data and reading those back gives a hash mismatch: + Also just copying 8G random data and reading those back gives a hash mismatch: root@arbok:~# dd if=/dev/urandom of=test.dat bs=1G count=8 iflag=fullblock 8+0 records in 8+0 records out 8589934592 bytes (8.6 GB, 8.0 GiB) copied, 85.6076 s, 100 MB/s root@arbok:~# dd if=test.dat of=/dev/hioa bs=1G count=8 iflag=fullblock 8+0 records in 8+0 records out 8589934592 bytes (8.6 GB, 8.0 GiB) copied, 10.6034 s, 810 MB/s root@arbok:~# dd if=/dev/hioa of=read-back.dat bs=1G count=8 iflag=fullblock sha256sum test.dat read- 8+0 records in 8+0 records out 8589934592 bytes (8.6 GB, 8.0 GiB) copied, 66.1872 s, 130 MB/s - root@arbok:~# sha256sum test.dat read-back.dat + root@arbok:~# sha256sum test.dat read-back.dat 6376d245a07c42c990589a3c17c44e63d826d1cb583fc5a065deff9dae69fd3a test.dat ebfb4ef19ae410f190327b5ebd312711263bc7579970e87d9c1e2d84e06b3c25 read-back.dat
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1701316 Title: Data corruption with hio driver To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1701316/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
