Hi Zheng,
I think I managed to understand what you supposed me to do. The highest
inode which was reported to be set erronously to be free was quite
exactly identical with the highest inode in output of "cephfs-table tool
all list inode". So I used take_ino as you supposed with an max_ino
value slightly higher than that. Now MDS runs and I started a online MDS
scrub.
What confused me in the beginning was that inode numbers in list output
is given in hex but when using take_ino it has to be specified in dec.
Had to study the source code to get that...
Tomorrow morning I'll see if things got stable again.
Once again thank you very much for your support. I will report back to
the ML when I got news.
Best Regards,
Tobi
On 12/11/2017 05:19 PM, Tobias Prousa wrote:
Hi Zheng,
I did some more tests with cephfs-table-tool. I realized that disaster
recovery implies to possibly reset inode table completely besides
doing a session reset using something like
cephfs-table-tool all reset inode
Would that be close to what you suggested? Is it safe to reset
complete inode table or will that wipe my file system?
Btw. cephfs-table-tool show reset inode gives me ~400k inodes, part of
them in section 'free', part of them in section 'projected_free'.
Thanks,
Tobi
On 12/11/2017 04:28 PM, Yan, Zheng wrote:
On Mon, Dec 11, 2017 at 11:17 PM, Tobias Prousa
<tobias.prousa@xxxxxxxxx> wrote:
These are essentially the first commands I did execute, in this
exact order.
Additionally I did a:
ceph fs reset cephfs --yes-i-really-mean-it
how many active mds were there before the upgrading.
Any hint on how to find max inode number and do I understand that I
should
remove every free-marked inode number that is there except the
biggest one
which has to stay?
If you are not sure, you can just try removing 10000 inode numbers
from inodetale
How to remove those inodes using cephfs-table-tool?
using cephfs-table-tool take_inos <max ino>
--
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Dipl.-Inf. (FH) Tobias Prousa
Leiter Entwicklung Datenlogger
CAETEC GmbH
Industriestr. 1
D-82140 Olching
www.caetec.de
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Sitz der Gesellschaft: Olching
Handelsregister: Amtsgericht München, HRB 183929
Geschäftsführung: Stephan Bacher, Andreas Wocke
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eMail: tobias.prousa@xxxxxxxxx
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