The current desired open file descriptor limit is 1,000,000. This is
quite a large number, and not needed for every command. Namely, commands
that do not unpack a snapshot and create an AccountsDB will likely not
use this many files.
There is already an option in BlockstoreOptions to ignore errors if the
desired value cannot be set; this PR just bubbles that option up to a
CLI flag in ledger-tool.
A fifo rocksdb instance must be opened with max size parameter on the
fifo columns. To support this, we previously plumbed a constant up to
callers that provided a default if unbounded growth desired.
This change attempts to be more rusty by exposing an option for this
value, and converting the option to a constant at the lowest level
possible.
#### Summary of Changes
Removes the constant default for ShredStorageType::RocksFifo
as the shred storage size is either user-specified or derived
from --limit-ledger-size in #27459.
### Problem
When FIFO compaction is used while --rocksdb_fifo_shred_storage_size
is unspecified, the FIFO shred storage size is set to a const default based
on the default `--limit-ledger-size`.
### Summary of the Change
When --rocksdb_fifo_shred_storage_size is unspecified, it is now
derived from `--limit-ledger-size` by reserving 1500 bytes for each
shred.
#### Problem
Ledger-tool doesn't support shred-compaction-type other than the default rocksdb level compaction.
#### Summary of Changes
This PR enables ledger-tool to automatically detect the shred-compaction-type of the specified ledger.
#### Test Plan
New ledger-tool tests are added for both level and fifo compactions.
#### Summary of Changes
Blockstore::blockstore_directory() function takes a ShredStorageType and returns a path.
As it's a ShredStorageType related function, moving it under ShredStorageType as a
member function is a better fit.
In addition, as we start doing automatic shred compaction type selection under ledger-tool,
it becomes more convenient to reuse the function and const under blockstore_options
namespace instead of blockstore.
#### Problem
Currently, the creation of ShredStorageType::RocksFifo is hard coded in validator/src/main.rs.
But this common code will also need to be used in other places like ledger-tool.
#### Summary of Changes
This PR creates a helper functionShredStorageType::rocks_fifo that takes a total shred_storage_size
and equally allocates to data-shred and coding-shred storage.
#### Problem
When FIFO compaction is used, the size ratio between data shred and coding
shred is set to 1:1 based on the `--rocksdb_fifo_shred_storage_size` arg.
However, BlockstoreRocksFifoOptions::default() uses a slightly optimized
5:4 ratio instead, and the default() function is only used in benchmarks.
#### Summary of Changes
This PR makes both validator argument and BlockstoreRocksFifoOptions::default()
to use 1:1 ratio between data and coding shred size.
#### Problem
blockstore_db.rs has a mutual dependency between blockstore_metrics.rs.
#### Summary of Changes
This PR removes the mutual dependency by moving the option-related stuff
out from blockstore_db.rs to its new home --- blockstore_options.rs.
By doing this, we address the mutual dependency and also make the code cleaner.
steviez
behzad nouri
Yueh-Hsuan Chiang
Brian Anderson