emulab-stable

emulab-stable

Stable branch of the Emulab source code

Project ID: 976
  • Mike Hibler's avatar
    Bug fix: attempt to avoid hangs when creating blockstores on large SSDs. · a670b802
    Mike Hibler authored
    At least I think the problem is that we are doing inadvertent TRIM
    operations on large (480GB) SSDs. For one, when creating an ext4
    filesystem on such a blockstore, we specify "nodiscard". I toyed
    with the idea of turning off "issue_discards" for the lvremove
    operations when a blockstore is destroyed, but that led to old
    metadata being seen when the blockstore was re-created. That led
    to the last change, which was to force metadata zeroing when we
    do an lvcreate of a blockstore.
    a670b802
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