Re: [Dovecot] record points outside file error with dovecot revision 9116:9ae55b68cf61

[Jonathan Siegle]

On Jun 2, 2009, at 1:31 PM, Timo Sirainen wrote:

On Tue, 2009-06-02 at 13:24 -0400, jsie...@psu.edu wrote:

 dovecot: IMAP(testuser): Corrupted index cache file /full/path/
dovecot.index.cache:  record points outside file

this error by running imaptest for a while? http://imapwiki.org/ImapTest

So you're using AIX? Do you also happen to use NFS? Can you reproduce

No NFS here. The filesystem is called GPFS. It is a clustered FS.

same mailbox? Cache file is the part of Dovecot that demands the most
from the OS/filesystem. The most difficult part is probably that it
writes to the file without locking. It first reserves a space and then
starts writing there. Multiple processes can write to the same file at
the same time.

Ah, that probably explains it. Can multiple different servers modify the

Timo,

Are you saying that multiple processes on the same folder(INBOX) on the same IMAP server can cause this collision as well? Is there a difference between running multiple processes on the same folder(INBOX) on multiple IMAP servers vs running multiple processes on the same folder on a single IMAP server?

This should probably be changed at some point, since it

the file because it has to guess initially how much space to reserve..

could just buffer more data to memory and then lock, write, unlock. That would also make the code simpler, since it can currently leave holes to

This is definitely on my wish list.

Thanks,
Jonathan

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