[Gluster-devel] another mailstore glusterfs issue

Anand Avati avati at zresearch.com
Mon Nov 19 02:48:59 UTC 2007

 what is the version of glusterfs you are using?


2007/11/19, Jeff Humes <jeff at bofus.org>:
> I upgraded my dovecot imap server so that I could use the
> "disable_mmap=yes" option because I was seeing errors trying to write to
> .index and some other mmap'ed files in a glusterfs mounted mailstore.
> Those errors are not showing up anymore, but I am now seeing some other
> (harder to troubleshoot) errors:
> the mail client will get an email and click on it, and it will show no
> content in the message.  I look at the imap server log and see the
> following error:
> dovecot: Nov 18 20:16:56 Error: IMAP(jana at bofus.org
> <mailto:jana at bofus.org>): Maildir: Symlink destination doesn't exist:
> /opt/GFS/postfix/vmail/jana at bofus
> <mailto:jana at bofus>.org/cur/1195435820.V13Iaad099.asknmapr01:2,S
> So I do an "ls -l" on that file:
> # ls -l /opt/GFS/postfix/vmail/jana at bofus.org
> <mailto:jana at bofus.org>/cur/1195435820.V13Iaad099.asknmapr01:2,S
> ls: /opt/GFS/postfix/vmail/jana at bofus.org
> <mailto:jana at bofus.org>/cur/1195435820.V13Iaad099.asknmapr01:2,S: No
> such file or directory
> -rw-------  1 vmail vmail 9247 Nov 18 19:30
> /opt/GFS/postfix/vmail/jana at bofus.org
> <mailto:jana at bofus.org>/cur/1195435820.V13Iaad099.asknmapr01:2,S
> first it says "No such file or directory", then it lists it out.
> If I try to touch the file, it fails with no such file.  If I try to
> remove the file it fails in the same manner.
> Here is my client mountpoint:
> glusterfs on /opt/GFS/postfix type fuse
> (rw,nosuid,nodev,allow_other,default_permissions,max_read=1048576)
> So now I login to the glusterfs server:
> I can do an successful "ls -l" on that same file above:
> # ls -l /glusterfs/knworksmail/vmail/jana at bofus.org
> <mailto:jana at bofus.org>/cur/1195435820.V13Iaad099.asknmapr01:2,S
> -rw-------  1 15002 15002 9247 Nov 18 19:30
> /glusterfs/knworksmail/vmail/jana at bofus.org
> <mailto:jana at bofus.org>/cur/1195435820.V13Iaad099.asknmapr01:2,S
> Here on the server I can move the file around:
> mv /glusterfs/knworksmail/vmail/jana at bofus.org
> <mailto:jana at bofus.org>/cur/1195435820.V13Iaad099.asknmapr01:2,S /var/tmp
> - works -
> Now if I move the file back into place, the mail client can then see it
> like it should have been able to in the first place:
> mv /var/tmp/1195435820.V13Iaad099.asknmapr01:2,S
> /glusterfs/knworksmail/vmail/jana at bofus.org <mailto:jana at bofus.org>/cur/
> - client now sees it and the content -
> This happens seemingly randomly to mail.  this did not happen before the
> upgrade, and does not occur if I move the mailstore to local ext3 disk.
> Any Ideas?  do I need to provide more information?
> Thanks!
> -Jeff Humes
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It always takes longer than you expect, even when you take into account
Hofstadter's Law.

-- Hofstadter's Law

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