Re: Ceph read errors

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On Wed, Aug 12, 2015 at 1:14 PM, Arseniy Seroka <ars.seroka@xxxxxxxxx> wrote:
> 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
> ```

Interesting.  Are you using the kernel or fuse client (and what version?)

John
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