Veritas-bu

[Veritas-bu] Media read error confusion

2005-07-08 17:48:39
Subject: [Veritas-bu] Media read error confusion
From: aaron.mills AT returnpath DOT net (Aaron Mills)
Date: Fri, 8 Jul 2005 15:48:39 -0600
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Forgive me if this has been asked before, but I see the following in the
bptm logs and I can't figure out why I'm getting a "Not enough space"
error. The tape doesn't appear to be full and no backups appear to have
failed because of the message:

15:55:53.004 [199] <8> io_read_block: read error on media id CA1547,
drive index 0 reading header block, Not enough space
15:55:53.004 [199] <2> io_position_for_write: error, rewind and retry
15:55:53.005 [199] <2> io_ioctl: command (5)MTREW 1 from (bptm.c.6589)
on drive index 0
15:55:53.075 [160] <2> io_position_for_read: locate block is done
15:55:53.076 [160] <2> io_read_back_header: drive index 1, reading
backup header
15:55:54.475 [29817] <2> db_lock_media: unable to lock media at offset
31 (CA1547)
15:55:54.595 [29817] <2> job_monitoring_exex: ACK disconnect
15:55:54.595 [29817] <2> job_disconnect: Disconnected
15:55:54.604 [29817] <2> bptm: EXITING with status 0 <----------

Interestingly, the problem appears to be intermittant. Any idea what
causes this?

        -Aaron

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<P><FONT SIZE=3D2 FACE=3D"Arial">Forgive me if this has been asked =
before, but I see the following in the bptm logs and I can't figure out =
why I'm getting a &quot;Not enough space&quot; error. The tape doesn't =
appear to be full and no backups appear to have failed because of the =
message:</FONT></P>

<P><FONT SIZE=3D2 FACE=3D"Arial">15:55:53.004 [199] &lt;8&gt; =
io_read_block: read error on media id CA1547, drive index 0 reading =
header block, Not enough space</FONT></P>

<P><FONT SIZE=3D2 FACE=3D"Arial">15:55:53.004 [199] &lt;2&gt; =
io_position_for_write: error, rewind and retry</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">15:55:53.005 [199] &lt;2&gt; io_ioctl: =
command (5)MTREW 1 from (bptm.c.6589) on drive index 0</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">15:55:53.075 [160] &lt;2&gt; =
io_position_for_read: locate block is done</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">15:55:53.076 [160] &lt;2&gt; =
io_read_back_header: drive index 1, reading backup header</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">15:55:54.475 [29817] &lt;2&gt; =
db_lock_media: unable to lock media at offset 31 (CA1547)</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">15:55:54.595 [29817] &lt;2&gt; =
job_monitoring_exex: ACK disconnect</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">15:55:54.595 [29817] &lt;2&gt; =
job_disconnect: Disconnected</FONT>

<BR><FONT SIZE=3D2 FACE=3D"Arial">15:55:54.604 [29817] &lt;2&gt; bptm: =
EXITING with status 0 &lt;----------</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">Interestingly, the problem appears to =
be intermittant. Any idea what causes this?</FONT>
</P>

<P>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <FONT SIZE=3D2 =
FACE=3D"Arial">-Aaron</FONT>
</P>

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