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update design docs for new-schema branch changes

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Scott Lamb
2018-03-24 20:51:30 -07:00
parent 91636d3193
commit 65e68d3255
4 changed files with 180 additions and 64 deletions
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17
db/schema.proto
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@@ -32,21 +32,8 @@ syntax = "proto3";
// Metadata stored in sample file dirs as "<dir>/meta". This is checked
// against the metadata stored within the database to detect inconsistencies
// between the directory and database, including the following:
//
// * sample file directory's disk not being mounted.
// * mixing up mount points of two sample file directories belonging to the
// same database.
// * directory renames not properly recorded in the database.
// * restoration of the database from backup but not the sample file
// directory.
// * restoration of the sample file directory but not the database.
// * two sample file directory paths pointed at the same inode via symlinks
// or non-canonical paths. (Note that flock(2) has a design flaw in which
// multiple file descriptors can share a lock, so the current locking scheme
// is not sufficient to detect this otherwise.)
// * database and sample file directories forked from the same version, opened
// the same number of times, then crossed.
// between the directory and database, such as those described in
// design/schema.md.
message DirMeta {
// A uuid associated with the database, in binary form. dir_uuid is strictly
// more powerful, but it improves diagnostics to know if the directory