From: "Fabian Grünbichler" <f.gruenbichler@proxmox.com>
To: Proxmox Backup Server development discussion
<pbs-devel@lists.proxmox.com>
Subject: Re: [pbs-devel] [RFC v2 proxmox-backup 24/36] index: fetch chunk form index by start/end-offset
Date: Tue, 12 Mar 2024 09:50:40 +0100 [thread overview]
Message-ID: <1710232817.oiegytfp1w.astroid@yuna.none> (raw)
In-Reply-To: <20240305092703.126906-25-c.ebner@proxmox.com>
s/form/from/
but the commit title seems a bit off anyway - this doesn't fetch any
chunk
On March 5, 2024 10:26 am, Christian Ebner wrote:
> In preparation for injecting reused payload chunks in payload streams
> for regular files with unchanged metaddata.
>
> Adds a function to get a list of DynamicEntry's from a chunk index by
> given start and end offset, the range of which will be contained
> within these returned chunks.
>
> In addition to the list of index entries, the padding to the start of
> the requested start offset from the first chunk is returned, as well
> as the end padding following the requested payload to the actual
> chunk end.
>
> The padding is used for calculation of the payload reference offset
> written to the metadata archive, required for payload access during
> decoding.
>
> Signed-off-by: Christian Ebner <c.ebner@proxmox.com>
> ---
> changes since version 1:
> - s/Appendable/Reusable/ incorrect naming leftover from previous approach
>
> pbs-datastore/src/dynamic_index.rs | 55 ++++++++++++++++++++++++++++++
> 1 file changed, 55 insertions(+)
>
> diff --git a/pbs-datastore/src/dynamic_index.rs b/pbs-datastore/src/dynamic_index.rs
> index 71a5082e..85c86b32 100644
> --- a/pbs-datastore/src/dynamic_index.rs
> +++ b/pbs-datastore/src/dynamic_index.rs
> @@ -74,6 +74,26 @@ impl DynamicEntry {
> }
> }
>
> +/// Dynamic Entry reusable by payload references
> +#[derive(Clone, Debug)]
> +#[repr(C)]
> +pub struct ReusableDynamicEntry {
> + size_le: u64,
> + digest: [u8; 32],
> +}
> +
> +impl ReusableDynamicEntry {
> + #[inline]
> + pub fn size(&self) -> u64 {
> + u64::from_le(self.size_le)
> + }
> +
> + #[inline]
> + pub fn digest(&self) -> [u8; 32] {
> + self.digest.clone()
> + }
> +}
> +
> pub struct DynamicIndexReader {
> _file: File,
> pub size: usize,
> @@ -188,6 +208,41 @@ impl DynamicIndexReader {
> self.binary_search(middle_idx + 1, middle_end, end_idx, end, offset)
> }
> }
> +
> + /// List of chunk indices containing the data from start_offset to end_offset
> + pub fn indices(
and tbh, this also seems like a very generic name ;) there's also only a
single call site, so maybe this could live as a helper there? or do we
expect to need this somewhere else in the near future?
> + &self,
> + start_offset: u64,
> + end_offset: u64,
> + ) -> Result<(Vec<ReusableDynamicEntry>, u64, u64), Error> {
> + let end_idx = self.index.len() - 1;
this would then be self.index_count() - 1;
> + let chunk_end = self.chunk_end(end_idx);
> + let start = self.binary_search(0, 0, end_idx, chunk_end, start_offset)?;
> + let end = self.binary_search(0, 0, end_idx, chunk_end, end_offset - 1)?;
these three are pub fn
> +
> + let offset_first = if start == 0 {
> + 0
> + } else {
> + self.index[start - 1].end()
this would be self.chunk_end(start - 1)
> + };
> +
> + let padding_start = start_offset - offset_first;
> + let padding_end = self.index[end].end() - end_offset;
> +
also chunk_end
> + let mut indices = Vec::new();
> + let mut prev_end = offset_first;
> + for dynamic_entry in &self.index[start..end + 1] {
also pub via index()
> + let size = dynamic_entry.end() - prev_end;
> + let reusable_dynamic_entry = ReusableDynamicEntry {
> + size_le: size.to_le(),
> + digest: dynamic_entry.digest.clone(),
> + };
> + prev_end += size;
> + indices.push(reusable_dynamic_entry);
> + }
> +
> + Ok((indices, padding_start, padding_end))
the end padding is currently not even used at the call site?
> + }
> }
>
> impl IndexFile for DynamicIndexReader {
> --
> 2.39.2
>
>
>
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>
>
next prev parent reply other threads:[~2024-03-12 8:50 UTC|newest]
Thread overview: 94+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-05 9:26 [pbs-devel] [RFC pxar proxmox-backup 00/36] fix #3174: improve file-level backup Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 pxar 01/36] format/examples: add PXAR_PAYLOAD_REF entry header Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 pxar 02/36] encoder: add optional output writer for file payloads Christian Ebner
2024-03-11 13:21 ` Fabian Grünbichler
2024-03-11 13:50 ` Christian Ebner
2024-03-11 15:41 ` Fabian Grünbichler
2024-03-05 9:26 ` [pbs-devel] [RFC v2 pxar 03/36] format/decoder: add method to read payload references Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 pxar 04/36] decoder: add optional payload input stream Christian Ebner
2024-03-11 13:21 ` Fabian Grünbichler
2024-03-11 14:05 ` Christian Ebner
2024-03-11 15:27 ` Fabian Grünbichler
2024-03-11 15:51 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 pxar 05/36] accessor: " Christian Ebner
2024-03-11 13:21 ` Fabian Grünbichler
2024-03-05 9:26 ` [pbs-devel] [RFC v2 pxar 06/36] encoder: move to stack based state tracking Christian Ebner
2024-03-11 13:21 ` Fabian Grünbichler
2024-03-11 14:12 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 pxar 07/36] encoder: add payload reference capability Christian Ebner
2024-03-11 13:21 ` Fabian Grünbichler
2024-03-11 14:15 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 pxar 08/36] encoder: add payload position capability Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 pxar 09/36] encoder: add payload advance capability Christian Ebner
2024-03-11 13:22 ` Fabian Grünbichler
2024-03-11 14:22 ` Christian Ebner
2024-03-11 15:27 ` Fabian Grünbichler
2024-03-11 15:41 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 pxar 10/36] encoder/format: finish payload stream with marker Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 11/36] client: pxar: switch to stack based encoder state Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 12/36] client: backup: factor out extension from backup target Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 13/36] client: backup: early check for fixed index type Christian Ebner
2024-03-11 14:57 ` Fabian Grünbichler
2024-03-11 15:12 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 14/36] client: backup: split payload to dedicated stream Christian Ebner
2024-03-11 14:57 ` Fabian Grünbichler
2024-03-11 15:22 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 15/36] client: restore: read payload from dedicated index Christian Ebner
2024-03-11 14:58 ` Fabian Grünbichler
2024-03-11 15:26 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 16/36] tools: cover meta extension for pxar archives Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 17/36] restore: " Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 18/36] client: mount: make split pxar archives mountable Christian Ebner
2024-03-11 14:58 ` Fabian Grünbichler
2024-03-11 15:29 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 19/36] api: datastore: refactor getting local chunk reader Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 20/36] api: datastore: attach optional payload " Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 21/36] catalog: shell: factor out pxar fuse reader instantiation Christian Ebner
2024-03-11 14:58 ` Fabian Grünbichler
2024-03-11 15:31 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 22/36] catalog: shell: redirect payload reader for split streams Christian Ebner
2024-03-11 14:58 ` Fabian Grünbichler
2024-03-11 15:24 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 23/36] www: cover meta extension for pxar archives Christian Ebner
2024-03-11 14:58 ` Fabian Grünbichler
2024-03-11 15:31 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 24/36] index: fetch chunk form index by start/end-offset Christian Ebner
2024-03-12 8:50 ` Fabian Grünbichler [this message]
2024-03-14 8:23 ` Christian Ebner
2024-03-12 12:47 ` Dietmar Maurer
2024-03-12 12:51 ` Christian Ebner
2024-03-12 13:03 ` Dietmar Maurer
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 25/36] upload stream: impl reused chunk injector Christian Ebner
2024-03-13 9:43 ` Dietmar Maurer
2024-03-14 14:03 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 26/36] client: chunk stream: add chunk injection queues Christian Ebner
2024-03-12 9:46 ` Fabian Grünbichler
2024-03-19 10:52 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 27/36] client: implement prepare reference method Christian Ebner
2024-03-12 10:07 ` Fabian Grünbichler
2024-03-19 11:51 ` Christian Ebner
2024-03-19 12:49 ` Fabian Grünbichler
2024-03-20 8:37 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 28/36] client: pxar: implement store to insert chunks on caching Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 29/36] client: pxar: add previous reference to archiver Christian Ebner
2024-03-12 12:12 ` Fabian Grünbichler
2024-03-12 12:25 ` Christian Ebner
2024-03-19 12:59 ` Christian Ebner
2024-03-19 13:04 ` Fabian Grünbichler
2024-03-20 8:52 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 30/36] client: pxar: add method for metadata comparison Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 31/36] specs: add backup detection mode specification Christian Ebner
2024-03-12 12:17 ` Fabian Grünbichler
2024-03-12 12:31 ` Christian Ebner
2024-03-20 9:28 ` Christian Ebner
2024-03-05 9:26 ` [pbs-devel] [RFC v2 proxmox-backup 32/36] pxar: caching: add look-ahead cache types Christian Ebner
2024-03-05 9:27 ` [pbs-devel] [RFC v2 proxmox-backup 33/36] client: pxar: add look-ahead caching Christian Ebner
2024-03-12 14:08 ` Fabian Grünbichler
2024-03-20 10:28 ` Christian Ebner
2024-03-05 9:27 ` [pbs-devel] [RFC v2 proxmox-backup 34/36] fix #3174: client: pxar: enable caching and meta comparison Christian Ebner
2024-03-13 11:12 ` Fabian Grünbichler
2024-03-05 9:27 ` [pbs-devel] [RFC v2 proxmox-backup 35/36] test-suite: add detection mode change benchmark Christian Ebner
2024-03-13 11:48 ` Fabian Grünbichler
2024-03-05 9:27 ` [pbs-devel] [RFC v2 proxmox-backup 36/36] test-suite: Add bin to deb, add shell completions Christian Ebner
2024-03-13 11:18 ` Fabian Grünbichler
2024-03-13 11:44 ` [pbs-devel] [RFC pxar proxmox-backup 00/36] fix #3174: improve file-level backup Fabian Grünbichler
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