Ceph read errors

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Hello! I have a following error.
Doing `scp` from local storage to ceph I'm getting errors in file's contents.
For example:
```
me@kraken:/ceph_storage/lib$ java -jar file.jar
Error: Invalid or corrupt jarfile file.jar
```
If I'm checking md5 -> everything is ok.

Then I'm going to another server
me@poni:/ceph_storage/lib$ java -jar file.jar
Missing required option(s) [e/edges, e/edges, n/nodes, n/nodes]
Option (* = required)       Description                         
---------------------       -----------     
...
```

After that I'm going to the previous server and everything works.
```
me@kraken:/ceph_storage/lib/$ java -jar file.jar
Missing required option(s) [e/edges, e/edges, n/nodes, n/nodes]
Option (* = required)       Description                         
---------------------       -----------  
...
```

I think that there are problems with mmap read.
Another example:
```
me@kraken:/ceph_storage/lib$ dd if=file.jar skip=1330676 bs=1 count=10 | hexdump -C
10+0 records in
10+0 records out
00000000  00 00 00 00 00 00 00 00  00 00                    |..........|
10 bytes (10 B) copied0000000a
, 0.0149698 s, 0.7 kB/s
me@kraken:/ceph_storage/lib$ head file.jar -c 10 | hexdump -C                      
00000000  50 4b 03 04 0a 00 00 08  00 00                    |PK........|
0000000a
```

--
Sincerely,
Arseniy Seroka
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