We've received a patch from Huawei which is said to fix this issue. The
patch is an obviously correct fix, so I've applied it to artful. I'll
provide a test build shortly for zesty.
Also will backport to yakkety, since there's potential for bugs there as
well. Xenial is unaffected because the code paths in question are only
relevant to 4.8 and later (I mistakenly nominated this for xenial, will
mark that invalid).
** Also affects: linux (Ubuntu Artful)
Importance: High
Assignee: Seth Forshee (sforshee)
Status: Confirmed
** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Zesty)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Yakkety)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Xenial)
Importance: Undecided => High
** Changed in: linux (Ubuntu Xenial)
Status: New => In Progress
** Changed in: linux (Ubuntu Xenial)
Assignee: (unassigned) => Seth Forshee (sforshee)
** Changed in: linux (Ubuntu Yakkety)
Status: New => In Progress
** Changed in: linux (Ubuntu Yakkety)
Assignee: (unassigned) => Seth Forshee (sforshee)
** Changed in: linux (Ubuntu Yakkety)
Importance: Undecided => High
** Changed in: linux (Ubuntu Zesty)
Importance: Undecided => High
** Changed in: linux (Ubuntu Zesty)
Status: New => In Progress
** Changed in: linux (Ubuntu Zesty)
Assignee: (unassigned) => Seth Forshee (sforshee)
** Changed in: linux (Ubuntu Artful)
Status: Confirmed => In Progress
** Changed in: linux (Ubuntu Artful)
Status: In Progress => Fix Committed
** Changed in: linux (Ubuntu Xenial)
Status: In Progress => Invalid
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https://bugs.launchpad.net/bugs/1701316
Title:
Data corruption with hio driver
Status in linux package in Ubuntu:
Fix Committed
Status in linux source package in Xenial:
Invalid
Status in linux source package in Yakkety:
In Progress
Status in linux source package in Zesty:
In Progress
Status in linux source package in Artful:
Fix Committed
Bug description:
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
data = bsize=4096 blocks=195342336, imaxpct=25
= 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
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:
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
No relevant entries about read/write errors in dmesg
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
6376d245a07c42c990589a3c17c44e63d826d1cb583fc5a065deff9dae69fd3a test.dat
ebfb4ef19ae410f190327b5ebd312711263bc7579970e87d9c1e2d84e06b3c25
read-back.dat
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