Disk Mirrors in Reliant Unix - Problem?


 
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Special Forums Hardware Filesystems, Disks and Memory Disk Mirrors in Reliant Unix - Problem?
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Old 12-16-2004
Disk Mirrors in Reliant Unix - Problem?

Hi Folks,

This one has me a bit confused.

I have a large system running Reliant 5.45 with an EMC 3930 disk array fibre attached. As part of our requirement I implemented host level mirroring in addition to the BCV functionality provided by the 3930.

When the mirrors are split and the second mirror is mounted on a different mount point the size appears to be incorrect.

e.g. the mirror is vdisk302

/dev/vd/vdisk302 41943040 23017929 18877168 55% /ciblive/batch/production/files/dailey

the submirror is vdisk202

/dev/vd/vdisk202 4179408 2680498 1448144 65% /export_aix/ciblive/batch/production/files/daily

If the disk is unmounted and mounted again using the same command the info is correct.

The application is stopped while the mirrors are split and an fsck is run over the second mirror to ensure that it will mount.

Any one seen this before?

Rgds

Dave
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qmail-queue(8)						      System Manager's Manual						    qmail-queue(8)

NAME
qmail-queue - queue a mail message for delivery SYNOPSIS
qmail-queue DESCRIPTION
qmail-queue reads a mail message from descriptor 0. It then reads envelope information from descriptor 1. It places the message into the outgoing queue for future delivery by qmail-send. The envelope information is an envelope sender address followed by a list of envelope recipient addresses. The sender address is preceded by the letter F and terminated by a 0 byte. Each recipient address is preceded by the letter T and terminated by a 0 byte. The list of recipient addresses is terminated by an extra 0 byte. If qmail-queue sees end-of-file before the extra 0 byte, it aborts without placing the message into the queue. Every envelope recipient address should contain a username, an @ sign, and a fully qualified domain name. qmail-queue always adds a Received line to the top of the message. Other than this, qmail-queue does not inspect the message and does not enforce any restrictions on its contents. However, the recipients probably expect to see a proper header, as described in qmail-header(5). Programs included with qmail which invoke qmail-queue will invoke the contents of $QMAILQUEUE instead, if that environment variable is set. FILESYSTEM RESTRICTIONS
qmail-queue imposes two constraints on the queue structure: each mess subdirectory must be in the same filesystem as the pid directory; and each todo subdirectory must be in the same filesystem as the intd directory. EXIT CODES
qmail-queue does not print diagnostics. It exits 0 if it has successfully queued the message. It exits between 1 and 99 if it has failed to queue the message. All qmail-queue error codes between 11 and 40 indicate permanent errors: 11 Address too long. 31 Mail server permanently refuses to send the message to any recipients. (Not used by qmail-queue, but can be used by programs offering the same interface.) All other qmail-queue error codes indicate temporary errors: 51 Out of memory. 52 Timeout. 53 Write error; e.g., disk full. 54 Unable to read the message or envelope. 55 Unable to read a configuration file. (Not used by qmail-queue.) 56 Problem making a network connection from this host. (Not used by qmail-queue.) 61 Problem with the qmail home directory. 62 Problem with the queue directory. 63 Problem with queue/pid. 64 Problem with queue/mess. 65 Problem with queue/intd. 66 Problem with queue/todo. 71 Mail server temporarily refuses to send the message to any recipients. (Not used by qmail-queue.) 72 Connection to mail server timed out. (Not used by qmail-queue.) 73 Connection to mail server rejected. (Not used by qmail-queue.) 74 Connection to mail server succeeded, but communication failed. (Not used by qmail-queue.) 81 Internal bug; e.g., segmentation fault. 91 Envelope format error. SEE ALSO
addresses(5), envelopes(5), qmail-header(5), qmail-inject(8), qmail-qmqpc(8), qmail-send(8), qmail-smtpd(8) qmail-queue(8)