Bug#1093243: Upgrade to 6.1.123 kernel causes mariadb hangs

2025-01-27 Thread Xan Charbonnet
The MariaDB developers are wondering whether another corruption bug, MDEV-35334 ( https://jira.mariadb.org/browse/MDEV-35334 ) might be related. The symptom was described as: the first 1 byte of a .ibd file is changed from 0 to 1, or the first 4 bytes are changed from 0 0 0 0 to 1 0 0 0. Is i

Bug#1093243: Upgrade to 6.1.123 kernel causes mariadb hangs

2025-01-26 Thread Xan Charbonnet
deb On 1/24/25 14:51, Jens Axboe wrote: On 1/24/25 1:33 PM, Salvatore Bonaccorso wrote: Hi Pavel, On Fri, Jan 24, 2025 at 06:40:51PM +, Pavel Begunkov wrote: On 1/24/25 16:30, Xan Charbonnet wrote: On 1/24/25 04:33, Pavel Begunkov wrote: Thanks for narrowing it down. Xan, can you try t

Bug#1093243: Upgrade to 6.1.123 kernel causes mariadb hangs

2025-01-24 Thread Xan Charbonnet
On 1/24/25 04:33, Pavel Begunkov wrote: Thanks for narrowing it down. Xan, can you try this change please? Waiters can miss wake ups without it, seems to match the description. diff --git a/io_uring/io_uring.c b/io_uring/io_uring.c index 9b58ba4616d40..e5a8ee944ef59 100644 --- a/io_uring/io_urin

Bug#1093243: Upgrade to 6.1.123 kernel causes mariadb hangs

2025-01-23 Thread Xan Charbonnet
On 1/23/25 20:49, Salvatore Bonaccorso wrote: Additionally please try with 6.1.120 and revert this commit 3ab9326f93ec ("io_uring: wake up optimisations") (which landed in 6.1.120). If that solves the problem maybe we miss some prequisites in the 6.1.y series here? I hope I did all this rig

Bug#1093243: Upgrade to 6.1.123 kernel causes mariadb hangs

2025-01-23 Thread Xan Charbonnet
I rented a Linode and have been trying to load it down with sysbench activity while doing a mariabackup and a mysqldump, also while spinning up the CPU with zstd benchmarks. So far I've had no luck triggering the fault. I've also been doing some kernel compilation. I followed this guide: htt