SebastianPereiro

[Additional info ](https://cloud.yandex.com/en/docs/storage/concepts/limits)about Yandex Object Storage limits

@Slach please reopen I've tested ver 1.5.2 with general: download_concurrency: 1 upload_concurrency: 1 And got the same error: 2022/08/21 15:26:45.254616 error can't acquire semaphore during downloadTableData: context canceled 2022/08/21 15:26:45.539502...

As a workaround I found that I can download remote backup using rclone and restore after using clickhouse-backup. But sure it's not so convenient.

Thank you for reopening. Please let me know if I can give more additional information.

The Yandex Cloud support service reported that they don't see any problems on their side

S3_DEBUG=true Doesn't produce any additional logs with version 1.5.2. Maybe I should set logging level to debug too?

[s3debug001.log](https://github.com/AlexAkulov/clickhouse-backup/files/9389532/s3debug001.log)

done: [s3debug002.log](https://github.com/AlexAkulov/clickhouse-backup/files/9409182/s3debug002.log)

Yep, pretty sure [chb_config.txt](https://github.com/AlexAkulov/clickhouse-backup/files/9410257/chb_config.txt)

It looks good: ``` rclone copy yandex:/clickhouse-1-1-backup/remote_backup_2022-08-20T14-22-04/shadow/default/adv_full_keyword_stat/default_20220720_97433_99970_102.tar . tar -tf default_20220720_97433_99970_102.tar tar: Removing leading `/' from member names /20220720_97433_99970_102/checksums.txt /20220720_97433_99970_102/clicks.bin /20220720_97433_99970_102/clicks.mrk2 /20220720_97433_99970_102/clicks.null.bin /20220720_97433_99970_102/clicks.null.mrk2 /20220720_97433_99970_102/columns.txt /20220720_97433_99970_102/company_id.bin /20220720_97433_99970_102/company_id.mrk2 /20220720_97433_99970_102/count.txt /20220720_97433_99970_102/cpc.bin /20220720_97433_99970_102/cpc.mrk2 /20220720_97433_99970_102/cpc.null.bin...