Tag Archives: error

Faulty system drive

I use a Compact Flash card as the system drive in my server. The purpose of this is to keep it cool and to keep the noise down. It doesn’t have any fans or moving parts at all, so it’s completely silent. A blue led is the only thing telling it’s powered on. Today I received reports in the mail about read errors on that drive:

Jan 29 12:20:17 warhammer kernel: [2067530.622415] sd 0:0:0:0: [sda] Unhandled sense code
Jan 29 12:20:17 warhammer kernel: [2067530.622422] sd 0:0:0:0: [sda] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Jan 29 12:20:17 warhammer kernel: [2067530.622434] sd 0:0:0:0: [sda] Sense Key : Medium Error [current] [descriptor]
Jan 29 12:20:17 warhammer kernel: [2067530.622499] sd 0:0:0:0: [sda] Add. Sense: Unrecovered read error - auto reallocate failed
Jan 29 12:20:17 warhammer kernel: [2067530.622514] sd 0:0:0:0: [sda] CDB: Read(10): 28 00 00 c4 ce 28 00 00 08 00

 

Probably nothing more to do than exchanging the CF card to another one. I’ll use Clonezilla Live to migrate the system. I’ll probably upgrade to Oneiric Ocelot while I’m at it too…

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Postfix problems

Today I noticed I hadn’t received any mail from one of my servers for several weeks. Upon investigation I found that postfix seemed to have some trouble finding the target machine, due to what appeared to be some kind of name lookup problem. I think the problem might have been introduced through a system upgrade some weeks ago…

What’s strange is that this server could lookup the target machine just fine through DNS, in both forward and reverse.

This is what I got in the log /var/log/mail.info:

Jul 15 08:37:44 warhammer postfix/smtp[14984]: 6B6AF483D9: to=<eek@narcissus>, orig_to=<root@warhammer.monkey7.se>, relay=none, delay=0.01, delays=0.01/0/0/0, dsn=5.4.4, status=bounced (Host or domain name not found. Name service error for name=narcissus type=A: Host not found)

I googled this error message and found a suggestion to add a line in /etc/postfix/main.cf:

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