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From 60789c658ea22063c26168cb4ce15ac5fd279e58 Mon Sep 17 00:00:00 2001
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From: Ravishankar N <ravishankar@redhat.com>
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Date: Mon, 14 Dec 2020 10:57:03 +0530
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Subject: [PATCH 500/511] features/shard: Convert shard block indices to uint64
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This patch fixes a crash in FOPs that operate on really large sharded
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files where number of participant shards could sometimes exceed
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signed int32 max.
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The patch also adds GF_ASSERTs to ensure that number of participating
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shards is always greater than 0 for files that do have more than one
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shard.
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Upstream:
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> https://review.gluster.org/#/c/glusterfs/+/23407/
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> Change-Id: I354de58796f350eb1aa42fcdf8092ca2e69ccbb6
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> Fixes: #1348
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> Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
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BUG: 1752739
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Change-Id: I354de58796f350eb1aa42fcdf8092ca2e69ccbb6
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Signed-off-by: Vinayakswami Hariharmath <vharihar@redhat.com>
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Reviewed-on: https://code.engineering.redhat.com/gerrit/221061
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Tested-by: Ravishankar Narayanankutty <ravishankar@redhat.com>
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Tested-by: RHGS Build Bot <nigelb@redhat.com>
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Reviewed-by: Ravishankar Narayanankutty <ravishankar@redhat.com>
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---
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xlators/features/shard/src/shard.c | 14 ++++++++------
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xlators/features/shard/src/shard.h | 6 +++---
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2 files changed, 11 insertions(+), 9 deletions(-)
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diff --git a/xlators/features/shard/src/shard.c b/xlators/features/shard/src/shard.c
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index 16d557b..a967f35 100644
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--- a/xlators/features/shard/src/shard.c
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+++ b/xlators/features/shard/src/shard.c
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@@ -1855,10 +1855,9 @@ int shard_truncate_last_shard(call_frame_t *frame, xlator_t *this,
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*/
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if (!inode) {
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gf_msg_debug(this->name, 0,
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- "Last shard to be truncated absent"
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- " in backend: %s. Directly proceeding to update "
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- "file size",
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- uuid_utoa(inode->gfid));
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+ "Last shard to be truncated absent in backend: " PRIu64
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+ " of gfid: %s. Directly proceeding to update file size",
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+ local->first_block, uuid_utoa(local->loc.inode->gfid));
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shard_update_file_size(frame, this, NULL, &local->loc,
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shard_post_update_size_truncate_handler);
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return 0;
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@@ -2389,6 +2388,7 @@ int shard_truncate_begin(call_frame_t *frame, xlator_t *this) {
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get_highest_block(0, local->prebuf.ia_size, local->block_size);
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local->num_blocks = local->last_block - local->first_block + 1;
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+ GF_ASSERT(local->num_blocks > 0);
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local->resolver_base_inode =
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(local->fop == GF_FOP_TRUNCATE) ? local->loc.inode : local->fd->inode;
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@@ -4809,6 +4809,7 @@ int shard_post_lookup_readv_handler(call_frame_t *frame, xlator_t *this) {
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get_highest_block(local->offset, local->total_size, local->block_size);
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local->num_blocks = local->last_block - local->first_block + 1;
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+ GF_ASSERT(local->num_blocks > 0);
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local->resolver_base_inode = local->loc.inode;
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local->inode_list =
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@@ -5266,6 +5267,7 @@ int shard_common_inode_write_post_lookup_handler(call_frame_t *frame,
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local->last_block =
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get_highest_block(local->offset, local->total_size, local->block_size);
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local->num_blocks = local->last_block - local->first_block + 1;
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+ GF_ASSERT(local->num_blocks > 0);
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local->inode_list =
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GF_CALLOC(local->num_blocks, sizeof(inode_t *), gf_shard_mt_inode_list);
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if (!local->inode_list) {
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@@ -5274,8 +5276,8 @@ int shard_common_inode_write_post_lookup_handler(call_frame_t *frame,
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}
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gf_msg_trace(
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- this->name, 0, "%s: gfid=%s first_block=%" PRIu32 " "
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- "last_block=%" PRIu32 " num_blocks=%" PRIu32
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+ this->name, 0, "%s: gfid=%s first_block=%" PRIu64 " "
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+ "last_block=%" PRIu64 " num_blocks=%" PRIu64
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" offset=%" PRId64 " total_size=%zu flags=%" PRId32 "",
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gf_fop_list[local->fop], uuid_utoa(local->resolver_base_inode->gfid),
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local->first_block, local->last_block, local->num_blocks, local->offset,
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diff --git a/xlators/features/shard/src/shard.h b/xlators/features/shard/src/shard.h
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index 1721417..4fe181b 100644
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--- a/xlators/features/shard/src/shard.h
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+++ b/xlators/features/shard/src/shard.h
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@@ -254,9 +254,9 @@ typedef int32_t (*shard_post_update_size_fop_handler_t)(call_frame_t *frame,
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typedef struct shard_local {
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int op_ret;
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int op_errno;
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- int first_block;
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- int last_block;
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- int num_blocks;
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+ uint64_t first_block;
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+ uint64_t last_block;
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+ uint64_t num_blocks;
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int call_count;
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int eexist_count;
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int create_count;
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--
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1.8.3.1
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