Re: [Moosefs-users] finding the files

[Michał B. <mic...@ge...>]

For the moment there is no special method for finding such files. We will
include it in future "mastertools".

We use "mfsmetadump" and "grep" - so for now this is really "manual" search.


Regards
Michał 


-----Original Message-----
From: Bán Miklós [mailto:ba...@vo...] 
Sent: Friday, September 10, 2010 10:56 PM
To: moo...@li...
Subject: [Moosefs-users] finding the files


Hi, 

is there a way to find a file based on their chunk info?



Today I found an error log on the cgiserv screen:

"2010-09-10 21:19:58 on chunk: 372210"

After I have found this line in the syslog of one of my chunkserver:

mfschunkserver[15693]: read_block_from_chunk:
 file:/mnt/mfs_hd1/F2/chunk_000000000005ADF2_00000001.mfs - crc error

Which is the affected file?

After I greped the changelogs for "372210":


changelog.8.mfs:3722100: 1284129925|AQUIRE(432537,30)
changelog.8.mfs:3722101: 1284129925|WRITE(432537,0,1):440095
changelog.8.mfs:3722102: 1284129925|LENGTH(432537,16119)
changelog.8.mfs:3722103: 1284129925|UNLOCK(440095)
changelog.8.mfs:3722104:
1284129925|ATTR(432537,384,1011,100,1280486196,1209062162)
changelog.8.mfs:3722105:
1284129925|ATTR(432537,420,1011,100,1280486196,1209062162)
changelog.8.mfs:3722106:
1284129925|CREATE(428569,zzz.qd,f,384,1011,100,0):432538
changelog.8.mfs:3722107: 1284129925|AQUIRE(432538,30)
changelog.8.mfs:3722108: 1284129925|WRITE(432538,0,1):440096
changelog.8.mfs:3722109: 1284129925|LENGTH(432538,17947)


mfsfileinfo ./zzz.qd 
./zzz.qd:
        chunk 0: 000000000005ADF2_00000001 / (id:372210 ver:1)
                no valid copies !!!

I could replace that file from a backup, but I don't why happened this
error and how can I find easily a file based on their chunk info. Is
there any "reverse search" solution?


Thanx, Miklos

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