Could the problem be related with some faulty hardware (RAID-controller, port, cable) but not disk?
Does "faulty" disk works OK on other server?
Behnam Loghmani wrote on 21/02/18 16:09:
Hi there,
I changed the SSD on the problematic node with the new one and reconfigure OSDs and MON service on it.
but the problem occurred again with:
"rocksdb: submit_transaction error: Corruption: block checksum mismatch code = 2"
I get fully confused now.
On Tue, Feb 20, 2018 at 5:16 PM, Behnam Loghmani <behnam.loghmani@xxxxxxxxx
<mailto:behnam.loghmani@xxxxxxxxx>> wrote:
Hi Caspar,
I checked the filesystem and there isn't any error on filesystem.
The disk is SSD and it doesn't any attribute related to Wear level in smartctl and filesystem is
mounted with default options and no discard.
my ceph structure on this node is like this:
it has osd,mon,rgw services
1 SSD for OS and WAL/DB
2 HDD
OSDs are created by ceph-volume lvm.
the whole SSD is on 1 vg.
OS is on root lv
OSD.1 DB is on db-a
OSD.1 WAL is on wal-a
OSD.2 DB is on db-b
OSD.2 WAL is on wal-b
output of lvs:
data-a data-a -wi-a-----
data-b data-b -wi-a-----
db-a vg0 -wi-a-----
db-b vg0 -wi-a-----
root vg0 -wi-ao----
wal-a vg0 -wi-a-----
wal-b vg0 -wi-a-----
after making a heavy write on the radosgw, OSD.1 and OSD.2 has stopped with "block checksum
mismatch" error.
Now on this node MON and OSDs services has stopped working with this error
I think my issue is related to this bug: http://tracker.ceph.com/issues/22102
<http://tracker.ceph.com/issues/22102>
I ran
#ceph-bluestore-tool fsck --path /var/lib/ceph/osd/ceph-1 --deep 1
but it returns the same error:
*** Caught signal (Aborted) **
in thread 7fbf6c923d00 thread_name:ceph-bluestore-
2018-02-20 16:44:30.128787 7fbf6c923d00 -1 abort: Corruption: block checksum mismatch
ceph version 12.2.2 (cf0baeeeeba3b47f9427c6c97e2144b094b7e5ba) luminous (stable)
1: (()+0x3eb0b1) [0x55f779e6e0b1]
2: (()+0xf5e0) [0x7fbf61ae15e0]
3: (gsignal()+0x37) [0x7fbf604d31f7]
4: (abort()+0x148) [0x7fbf604d48e8]
5: (RocksDBStore::get(std::string const&, char const*, unsigned long,
ceph::buffer::list*)+0x1ce) [0x55f779d2b5ce]
6: (BlueStore::Collection::get_onode(ghobject_t const&, bool)+0x545) [0x55f779cd8f75]
7: (BlueStore::_fsck(bool, bool)+0x1bb5) [0x55f779cf1a75]
8: (main()+0xde0) [0x55f779baab90]
9: (__libc_start_main()+0xf5) [0x7fbf604bfc05]
10: (()+0x1bc59f) [0x55f779c3f59f]
2018-02-20 16:44:30.131334 7fbf6c923d00 -1 *** Caught signal (Aborted) **
in thread 7fbf6c923d00 thread_name:ceph-bluestore-
ceph version 12.2.2 (cf0baeeeeba3b47f9427c6c97e2144b094b7e5ba) luminous (stable)
1: (()+0x3eb0b1) [0x55f779e6e0b1]
2: (()+0xf5e0) [0x7fbf61ae15e0]
3: (gsignal()+0x37) [0x7fbf604d31f7]
4: (abort()+0x148) [0x7fbf604d48e8]
5: (RocksDBStore::get(std::string const&, char const*, unsigned long,
ceph::buffer::list*)+0x1ce) [0x55f779d2b5ce]
6: (BlueStore::Collection::get_onode(ghobject_t const&, bool)+0x545) [0x55f779cd8f75]
7: (BlueStore::_fsck(bool, bool)+0x1bb5) [0x55f779cf1a75]
8: (main()+0xde0) [0x55f779baab90]
9: (__libc_start_main()+0xf5) [0x7fbf604bfc05]
10: (()+0x1bc59f) [0x55f779c3f59f]
NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.
-1> 2018-02-20 16:44:30.128787 7fbf6c923d00 -1 abort: Corruption: block checksum mismatch
0> 2018-02-20 16:44:30.131334 7fbf6c923d00 -1 *** Caught signal (Aborted) **
in thread 7fbf6c923d00 thread_name:ceph-bluestore-
ceph version 12.2.2 (cf0baeeeeba3b47f9427c6c97e2144b094b7e5ba) luminous (stable)
1: (()+0x3eb0b1) [0x55f779e6e0b1]
2: (()+0xf5e0) [0x7fbf61ae15e0]
3: (gsignal()+0x37) [0x7fbf604d31f7]
4: (abort()+0x148) [0x7fbf604d48e8]
5: (RocksDBStore::get(std::string const&, char const*, unsigned long,
ceph::buffer::list*)+0x1ce) [0x55f779d2b5ce]
6: (BlueStore::Collection::get_onode(ghobject_t const&, bool)+0x545) [0x55f779cd8f75]
7: (BlueStore::_fsck(bool, bool)+0x1bb5) [0x55f779cf1a75]
8: (main()+0xde0) [0x55f779baab90]
9: (__libc_start_main()+0xf5) [0x7fbf604bfc05]
10: (()+0x1bc59f) [0x55f779c3f59f]
NOTE: a copy of the executable, or `objdump -rdS <executable>` is needed to interpret this.
Could you please help me to recover this node or find a way to prove SSD disk problem.
Best regards,
Behnam Loghmani
On Mon, Feb 19, 2018 at 1:35 PM, Caspar Smit <casparsmit@xxxxxxxxxxx
<mailto:casparsmit@xxxxxxxxxxx>> wrote:
Hi Behnam,
I would firstly recommend running a filesystem check on the monitor disk first to see if
there are any inconsistencies.
Is the disk where the monitor is running on a spinning disk or SSD?
If SSD you should check the Wear level stats through smartctl.
Maybe trim (discard) enabled on the filesystem mount? (discard could cause
problems/corruption in combination with certain SSD firmwares)
Caspar
2018-02-16 23:03 GMT+01:00 Behnam Loghmani <behnam.loghmani@xxxxxxxxx
<mailto:behnam.loghmani@xxxxxxxxx>>:
I checked the disk that monitor is on it with smartctl and it didn't return any error
and it doesn't have any Current_Pending_Sector.
Do you recommend any disk checks to make sure that this disk has problem and then I can
send the report to the provider for replacing the disk
On Sat, Feb 17, 2018 at 1:09 AM, Gregory Farnum <gfarnum@xxxxxxxxxx
<mailto:gfarnum@xxxxxxxxxx>> wrote:
The disk that the monitor is on...there isn't anything for you to configure about a
monitor WAL though so I'm not sure how that enters into it?
On Fri, Feb 16, 2018 at 12:46 PM Behnam Loghmani <behnam.loghmani@xxxxxxxxx
<mailto:behnam.loghmani@xxxxxxxxx>> wrote:
Thanks for your reply
Do you mean, that's the problem with the disk I use for WAL and DB?
On Fri, Feb 16, 2018 at 11:33 PM, Gregory Farnum <gfarnum@xxxxxxxxxx
<mailto:gfarnum@xxxxxxxxxx>> wrote:
On Fri, Feb 16, 2018 at 7:37 AM Behnam Loghmani <behnam.loghmani@xxxxxxxxx
<mailto:behnam.loghmani@xxxxxxxxx>> wrote:
Hi there,
I have a Ceph cluster version 12.2.2 on CentOS 7.
It is a testing cluster and I have set it up 2 weeks ago.
after some days, I see that one of the three mons has stopped(out of
quorum) and I can't start it anymore.
I checked the mon service log and the output shows this error:
"""
mon.XXXXXX@-1(probing) e4 preinit clean up potentially inconsistent
store state
rocksdb: submit_transaction_sync error: Corruption: block checksum mismatch
This bit is the important one. Your disk is bad and it’s feeding back
corrupted data.
code = 2 Rocksdb transaction:
0> 2018-02-16 17:37:07.041812 7f45a1e52e40 -1
/home/jenkins-build/build/workspace/ceph-build/ARCH/x86_64/AVAILABLE_ARCH/x86_64/AVAILABLE_DIST/centos7/DIST/centos7/MACHINE_SIZE/huge/release/12.2.2/rpm/el7/BUI
LD/ceph-12.2.2/src/mon/MonitorDBStore.h: In function 'void
MonitorDBStore::clear(std::set<std::basic_string<char> >&)' thread
7f45a1e52e40 time 2018-02-16 17:37:07.040846
/home/jenkins-build/build/workspace/ceph-build/ARCH/x86_64/AVAILABLE_ARCH/x86_64/AVAILABLE_DIST/centos7/DIST/centos7/MACHINE_SIZE/huge/release/12.2.2/rpm/el7/BUILD/ceph-12.2.2/src/mon/MonitorDBStore.h:
581: FAILE
D assert(r >= 0)
"""
the only solution I found is to remove this mon from quorum and remove
all mon data and re-add this mon to quorum again.
and ceph goes to the healthy status again.
but now after some days this mon has stopped and I face the same problem
again.
My cluster setup is:
4 osd hosts
total 8 osds
3 mons
1 rgw
this cluster has setup with ceph-volume lvm and wal/db separation on
logical volumes.
Best regards,
Behnam Loghmani
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