Hi, After several weeks using the 4.2.6 kernel + patches from Ewheeler we just ran into a crash again. This time the kernel was still running and the server was responsive but not able to do any IO on the bcache devices. [696983.683498] bcache_writebac D ffffffff810643df 0 5741 2 0x00000000 [696983.683505] ffff88103d01f180 0000000000000046 ffff88107842d000 ffffffff811a95cd [696983.683510] 0000000000000000 ffff8810388c4000 ffff88103d01f180 0000000000000001 [696983.683514] ffff882034ae0c10 0000000000000000 ffff882034ae0000 ffffffff8139601e [696983.683518] Call Trace: [696983.683530] [<ffffffff811a95cd>] ? blk_queue_bio+0x262/0x279 [696983.683539] [<ffffffff8139601e>] ? schedule+0x6b/0x78 [696983.683553] [<ffffffffa032ce9b>] ? closure_sync+0x66/0x91 [bcache] [696983.683563] [<ffffffffa033c89f>] ? bch_writeback_thread+0x622/0x6b5 [bcache] [696983.683569] [<ffffffff8100265c>] ? __switch_to+0x1de/0x3f7 [696983.683578] [<ffffffffa033c89f>] ? bch_writeback_thread+0x622/0x6b5 [bcache] [696983.683586] [<ffffffffa033c27d>] ? write_dirty_finish+0x1bf/0x1bf [bcache] [696983.683594] [<ffffffff810589d6>] ? kthread+0x99/0xa1 [696983.683598] [<ffffffff8105893d>] ? kthread_parkme+0x16/0x16 [696983.683603] [<ffffffff813986df>] ? ret_from_fork+0x3f/0x70 [696983.683607] [<ffffffff8105893d>] ? kthread_parkme+0x16/0x16 Don't know if this help. Unfortunately I thing that we will rollback and stop using Bcache unless this is really fixed :/ Regards, 7 décembre 2015 11:35 "Yannis Aribaud" <bugs@xxxxxxxxxx> a écrit: > Hi everyone, > > It's been one week I'm using a 4.2.6 kernel merged with the Bcache patches from Ewheeler and no > signs of any kind of trouble I had before. > Thus it seems your patches fix my soft lockup issue. > It's currently running on one of my ceph nodes, I will certainly push it on the others during the > next weeks. > > It would be great to merge thoses patches upstream since it seems that using Bcache in production > requires those fixes. > > Anyway, thanks to all of you for your time, advices and work on Bcache. I'll keep you updated. > > Regards, > -- > Open is better -- Open is better -- To unsubscribe from this list: send the line "unsubscribe linux-bcache" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
