Category Archives: AIX

NIM alt_disk_migration and p6 processor mode

I was trying to do a NIM alt_disk_migration on a POWER7 LPAR form AIX 7.1 to 7.2 but the nimadm scripts kept stalling, but without outputting anything interesting, even in debug mode. In the end I gave up and tried … Continue reading

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Updating fileset in lpp_source on NIM

If you update your NIM server to a new TL level and you do alt_disk migrations from this NIM server on client servers on lower levels, you need to update the bos.alt_disk.boot_images fileset in both the LPP sources and SPOTs … Continue reading

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X11 Forwarding problems

Trying to debug and simultaneously trawling Google for a non-trivial version of this issue: $ xclockX11 connection rejected because of wrong authentication.X connection to localhost:10.0 broken (explicit kill or server shutdown). I finally cracked it. This was from the outset … Continue reading

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VI changing to lowercase

I don’t know why I can never remember this one, but here it is for reference: :%s/.*/\L& .* = Match line& = What was matched No need for /g as .* already matches the line, and .* if faster than … Continue reading

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Can’t bosboot on Veritas cluster

I had an AIX Veritas cluster using DMP disk paths which couldn’t run bosboot or much else. Rootvg seemed locked down. The two commands below fixed it. vxdmpadm native enable vgname=rootvg vxdmpadm native release followed by: vxdmpadm native aqcuire These … Continue reading

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Finding SQL query in TCP stream

Just a little one to remember, as I use this occasionally, with this tcpdump you can read SQL queries, rsh commands etc: tcpdump -i en0 -s 0 -l -w – dst port 3306 | strings  

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rmsock bug and workaround

I found a bug in rmsock on AIX 6.1 TL9 recently which caused a server crash. If run on a socket ID that has disappeared, the server just dumps and reboots. I came up with a work around for identifying … Continue reading

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NFS soft versus hard mounts

We had an “interesting” debate in the office yesterday. And when I say interesting it was more like “heated”. Soft vs. hard NFS mounts is really something that gets people going, mainly because some people has been annoyed by a … Continue reading

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IRC and ##aix

A kind of a follow-up from a well-known AIX blogger, promoting IRC and the AIX related channel ##aix. Even though IRC is old, there really isn’t any other equivalent medium to replace it, and with its continued popularity, that is … Continue reading

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xpinfo and dyntrk – FSCSI_ERR10

I had noticed lots of FSCSI_ERR10 ‘Configuration mismatch’ messages with identifier 1FB4FD21. The errpt entry had the PID as 12D0E4 hex in the sense data: SENSE DATA 0000 0000 0000 00D3 0000 0016 0200 0000 0000 0000 0000 0000 0000 0000 … Continue reading

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