`test-osuosl-aix72-ppc64-3` /home file system corruption

[sxa]

Machine is currently offline and the /home file system is not able to be remounted:

root@nodejs03:[/root]fsck /dev/hd1

The current volume is: /dev/hd1
Primary superblock is valid.
Inode 16 has references to cross linked blocks.
The extent descriptors for inodes 1254880 through 1254911 are invalid.
        Inode Allocation Map 16,
        Inode Allocation Group 306,
        Extent Index 47
Errors detected in the file system inode allocation map.
fsck: 0507-278 Cannot continue.
File system is dirty.

I don't believe there's a way to recover from this so I intend to rebuild the file system. I know we've had to do this in the past on other machines.

Identified as part of #4329

[sxa]

Issued:

• mkfs /dev/hd1
• mount /home
• mkdir /home/iojs
• chown iojs:iojs /home/iojs
  Then as the iojd user:
• curl -O /home/aiojs/agent.jar https://ci.nodejs.org/jnlpJars/agent.jar
• mkdir -p /home/iojs/build/workspace
• Copied /home/iojs/.ssh/.known_hosts from another machine to avoid ECDSA host key is known for github.com and you have requested strict checking.
  That seems to be ok, although of course we'll have lost the ccache on that machine so it will need to be rebuilt so the first builds for each version will be slow. I'll keep an eye on it and make sure it runs to completion but the git operations have run and the compilation is running ok at the time of this comment.

[sxa]

/tmp filled up during the build - I've had a clearout and re-running here
Noting that /tmp/node-compile-cache is constantly increasing in size. i haven't touched that directory as there were other things in there that could be cleared in preference.

[sxa]

-3 completed successfully so I'm re-enabling on node-test-commit-aix in the hope that the caches will be repopulated over the weekend and be good for Monday.

[sxa]

Seems to be working well now - closing.