- Committer: Scott Moser
- Date: 2015-07-22 19:17:10 UTC
- mfrom: (1121.2.5 lp1411582)
- Revision ID: smoser@ubuntu.com-20150722191710-i2d73higqmeiftfj
mounts: support reliably detecting and using Azure ephemeral disks
Azure's ephemeral disks are not guaranteed to be assigned the same name by
the kernel every boot. This causes problems on ~2% of Azure instances, and
can be fixed by using udev rules to give us a deterministic path to mount;
this patch introduces those udev rules and modifies the Azure data source
to use them.
Changes to a couple of config modules were also required. In some places,
they just needed to learn to dereference symlinks. In cc_mounts this
wasn't sufficient because the dereferenced device would have been put in
/etc/fstab (rather defeating the point of using the udev rules in the
first place). A fairly hefty refactor was required to separate "is this a
valid block device?" from "what shall I put in fstab?".
Azure's ephemeral disks are not guaranteed to be assigned the same name by
the kernel every boot. This causes problems on ~2% of Azure instances, and
can be fixed by using udev rules to give us a deterministic path to mount;
this patch introduces those udev rules and modifies the Azure data source
to use them.
Changes to a couple of config modules were also required. In some places,
they just needed to learn to dereference symlinks. In cc_mounts this
wasn't sufficient because the dereferenced device would have been put in
/etc/fstab (rather defeating the point of using the udev rules in the
first place). A fairly hefty refactor was required to separate "is this a
valid block device?" from "what shall I put in fstab?".
| Filename | Latest Rev | Last Changed | Committer | Comment | Size | ||
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cloud-config.conf |
611 | 11 years ago | Scott Moser | mention that upstart job cloud-config emits cloud- | 236 bytes |
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cloud-final.conf |
559.2.378 | 11 years ago | Scott Moser | change upstart jobs to use single 'cloud-init' bin | 297 bytes |
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cloud-init-blocknet.conf |
1017 | 9 years ago | Scott Moser | cloud-init-blocknet: remove debug code going to /r | 2.4 KB |
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cloud-init-container.conf |
779 | 11 years ago | Scott Moser | upstart/cloud-init-container.conf: ensure /run/net | 1.9 KB |
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cloud-init-local.conf |
1012.1.1 | 9 years ago | Scott Moser | upstart: add blocknet which blocks net until after | 379 bytes |
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cloud-init-nonet.conf |
1016 | 9 years ago | Scott Moser | upstart/cloud-init-nonet.conf: only mention wait i | 1.8 KB |
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cloud-init.conf |
559.2.378 | 11 years ago | Scott Moser | change upstart jobs to use single 'cloud-init' bin | 202 bytes |
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cloud-log-shutdown.conf |
613 | 11 years ago | Scott Moser | add uptime to the output of cloud-log-shutdown | 562 bytes |
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