[DRBD-user] meta-data error

Bas van Schaik bas at tuxes.nl
Sun Mar 16 14:24:43 CET 2008

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


Hi Swetha,

Your answer makes me very curious what was exactly wrong with your CPU?
That could be really relevant to the other members of this list and drbd
users using a search engine to search for postings on the drbd-user list.

With this in mind, I would like to ask you to send your messages to the
drbd-user (at least CC), in stead of to my private mail only.

Regards,

  Bas


Swetha - wrote:
> Hi,
>  
> The error was in the CPU sir.
>  
> Iam not that good in hardware, so i thought the error was in the
> software part.
>  
> Please forgive me sir.
>  
> Iam new to drbd and its workings.
>  
> Iam an engineering student doing drbd as my final year project.
>  
> So, i dont have an in-depth knowledge of drbd
>  
> Regards
> Swetha
>
> */Bas van Schaik <bas at tuxes.nl>/* wrote:
>
>     Hi Swetha,
>
>     Now, what was the problem in this case?
>
>     -- Bas
>
>
>     Swetha - wrote:
>     > Yes i got the answer sir. Thanx
>     >
>     > Regards
>     > Swetha
>     >
>     > Bas van Schaik wrote:
>     > Hi Swetha,
>     >
>     > First of all: DRBD metadata has _nothing_ to do with your
>     filesystem.
>     > The DRBD metadata is used to keep track of the current status of the
>     > device and the other node.
>     >
>     > Knowing that, it is easy to understand that the file
>     disappearing has
>     > nothing to do with the DRBD conversion. Actually, if you were
>     able to
>     > mount /export using DRBD 0.7.21 and you were able to mount
>     /export after
>     > upgrading to DRBD 8.2.5, it is almost safe to assume that there is
>     > nothing wrong with the filesystem and thus nothing wrong with
>     DRBD. If
>     > there would be something wrong with DRBD, your machine would
>     refuse to
>     > mount /export.
>     >
>     > Maybe a stupid question: did you actually mount /export? Was it
>     mounted
>     > when you created the HTML-file? Possible problems:
>     > - you created the HTML-file on an unmounted mountpoint, so it is
>     > currently located on your root filesystem
>     > - you created the HTML-file on the mounted /export, but forgot
>     to mount
>     > it after the DRBD upgrade and now you're looking at an unmounted
>     mountpoint
>     >
>     > -- Bas
>     >
>     >
>     > Swetha - wrote:
>     >
>     >> Hi,
>     >>
>     >> I have upgraded my system from DRBD-0.7.21 to DRBD-8.2.5
>     >>
>     >> I have mounted default webserver of linux (/export) and i have
>     created a html page in it.
>     >>
>     >> But after i upgraded my system i found that i didnt have the
>     html page in upgraded version (8.2.5) that i created in my older
>     version (0.7.21)
>     >>
>     >> When i typed this following command
>     >>
>     >> [root at slave drbd]# drbdadm create-md export
>     >> v08 Magic number not found
>     >> md_offset 0
>     >> al_offset 4096
>     >> bm_offset 36864
>     >>
>     >> Found some data
>     >> ==> This might destroy existing data! <==
>     >>
>     >> Do you want to proceed?
>     >> [need to type 'yes' to confirm] yes
>     >>
>     >>
>     >> Valid v07 meta-data found, convert to v08?
>     >> [need to type 'yes' to confirm] yes
>     >>
>     >> Converting meta data...
>     >> Writing meta data...
>     >> New drbd meta data block sucessfully created.
>     >>
>     >> What is the problem?What is the solution?
>     >>
>     >> Regards
>     >> Swetha
>     >>
>     >>
>     >> ---------------------------------
>     >> Why delete messages? Unlimited storage is just a click away.
>     >>
>     >>
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>     >>
>     >>
>     >
>     >
>     >
>     >
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>
>
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