RE: What is the best way to backup the email boxes in cyrus imap.
On Thursday, September 27, 2001 03:51:59 PM +0100 James Courtier-Dutton [EMAIL PROTECTED] wrote: +-- | On Friday, September 21, 2001 07:40:50 PM +0100 James Courtier-Dutton | [EMAIL PROTECTED] wrote: | +-- | | Hello | | What is the best way to backup email boxes in cyrus imap? | | I think that you are confusing cyrus with UW. The message files | aren't ever | changed and hence cannot be corrupted, the cyrus.* files change but as | there aren't any tools to merge 2 copies they aren't worth | backing up. That | just leaves the mailbox file which only changes when you change | acl's. Once | again this would be a difficult file to recover but it is too | important to | ignore. | | /Michael | So if I only backup the message files and the acl's. | When I restore everything on a new machine, will the cyrus.* files create | themselves ? | The backup I want is just so that in a disaster situation, I can reload | all the email from backup onto a new machine. +-X8 The cyrus.* files aren't created automatically, you need to run reconstruct, it will fix cyrus.index and cyrus.cache. IIRC cyrus.seen is created automatically which leaves cyrus.header. It contains a copy of the acl for the folder and is used to recreate the mailbox file, that file would probably be worthwhile backing up for disaster recovery. I should probably add that I use version 1.5 but I haven't seen anything on this list that indicates that later versions work significantly differently. /Michael -- This space intentionally left non-blank.
RE: What is the best way to backup the email boxes in cyrus imap.
-Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Michael Salmon Sent: 26 September 2001 08:17 To: [EMAIL PROTECTED] Subject: Re: What is the best way to backup the email boxes in cyrus imap. On Friday, September 21, 2001 07:40:50 PM +0100 James Courtier-Dutton [EMAIL PROTECTED] wrote: +-- | Hello | What is the best way to backup email boxes in cyrus imap? I think that you are confusing cyrus with UW. The message files aren't ever changed and hence cannot be corrupted, the cyrus.* files change but as there aren't any tools to merge 2 copies they aren't worth backing up. That just leaves the mailbox file which only changes when you change acl's. Once again this would be a difficult file to recover but it is too important to ignore. /Michael So if I only backup the message files and the acl's. When I restore everything on a new machine, will the cyrus.* files create themselves ? The backup I want is just so that in a disaster situation, I can reload all the email from backup onto a new machine. Cheers James
Re: What is the best way to backup the email boxes in cyrus imap.
On Friday, September 21, 2001 07:40:50 PM +0100 James Courtier-Dutton [EMAIL PROTECTED] wrote: +-- | Hello | What is the best way to backup email boxes in cyrus imap? | I have a number IMAP clients connected, and some of them share mail boxes. | Surely, everyone should be disconnected while the backup takes place. | Is it possible to do the following: - | Disconnect one user, or alternatively, lock write access to the mailbox. | Backup mail box | Enable write access from the user again. | Then do the same for each user. | | Unless this locking takes place, I think there is a possibility of | corruption in the backup file. | | The only other way, is to stop the email server entirely during the | backup, but I would prefer less drastic measures. | Currently, all my users use IMAP, and email is delivered from sendmail via | deliver. +-X8 I think that you are confusing cyrus with UW. The message files aren't ever changed and hence cannot be corrupted, the cyrus.* files change but as there aren't any tools to merge 2 copies they aren't worth backing up. That just leaves the mailbox file which only changes when you change acl's. Once again this would be a difficult file to recover but it is too important to ignore. /Michael -- This space intentionally left non-blank.
What is the best way to backup the email boxes in cyrus imap.
Hello What is the best way to backup email boxes in cyrus imap? I have a number IMAP clients connected, and some of them share mail boxes. Surely, everyone should be disconnected while the backup takes place. Is it possible to do the following: - Disconnect one user, or alternatively, lock write access to the mailbox. Backup mail box Enable write access from the user again. Then do the same for each user. Unless this locking takes place, I think there is a possibility of corruption in the backup file. The only other way, is to stop the email server entirely during the backup, but I would prefer less drastic measures. Currently, all my users use IMAP, and email is delivered from sendmail via deliver. Please help James -- Nothing in this world is exactly what it appears to be.
Re: What is the best way to backup the email boxes in cyrus imap.
Thus spake James Courtier-Dutton ([EMAIL PROTECTED]): What is the best way to backup email boxes in cyrus imap? I have a number IMAP clients connected, and some of them share mail boxes. Surely, everyone should be disconnected while the backup takes place. Although I'm sure it would be slower, you could backup over the IMAP protocol on the loopback or such and not have to worry about multiple concurrent users. At least I think this would work... -- | Justin R. Miller / [EMAIL PROTECTED] / 0xC9C40C31 | Of all the things I've lost, I miss my pants the most. -- PGP signature
