similar to: Null deference panic in CentOS-6.5

Hello, (this is a recap of yesterday''s discussion on BTRFS IRC, also to save relevant pastes before pastebins expire) I have my /home on btrfs; a cronjob makes one snapshot every 30 minutes; these snapshots are kept for 24-48 hours, then deleted in batches. This is a 16K Leaf/Node BTRFS on top of mdadm RAID1. As system uptime approached 2 weeks, I started noticing that the free space

I''m running into a problem with the btrfs-cleaner thread becoming blocked on xfstests 068. The test locks up indefinitely without completing (normally it finished in about 45 seconds on my test box). I''ve replicated the issue on 3.10.0_rc5 and the for-linus branch of 3.9.0. I ran a git bisect on the 3.9.0 for-linus branch, and tracked my issue to the following commit: commit

Hi, Recently, I made a btrfs to use. And I met slowness problem. Trying to diag it. I found this: 1. dd if=/dev/zero of=test count=1024 bs=1MB This is fast, at about 25MB/s, and reasonable iowait. 2. dd if=/dev/zero of=test count=1 bs=1GB This is pretty slow, at about 1.5MB/s, and 90%+ iowait, constantly. May I know why it works like this? Thanks. -- To unsubscribe from this list: send the

I am currently looking at a bug report[1] which is happening when a Xen PVM guest with multiple VCPUs is running a high IO database load (a test script is available in the bug report). In experimenting it seems that this happens (or is getting more likely) when the number of VCPUs is 8 or higher (though I have not tried 6, only 2 and 4), having autogroup enabled seems to make it more likely, too

I''ve been working on running down intermittent ENOSPC issues. I can only seem to replicate ENOSPC errors when running zlib compression. However, I have been seeing similar ENOSPC errors to a lesser extent when playing with the LZ4HC patches. I apologize for not following up on this sooner, but I had drifted away from using zlib, and didn''t notice there was still an issue. My

We need an smb_mb() before waitqueue_active to avoid missing wakeups. Before Mitch was hitting a deadlock between the ordered flushers and the transaction commit because the ordered flushers were waiting for more refs and were never woken up, so those smp_mb()''s are the most important. Everything else I added for correctness sake and to avoid getting bitten by this again somewhere else.

On Wed, 18 Oct 2017, wuzhouhui wrote: > Does anyone have encountered same problem or advice? Expect minimal help when running custom kernel modules on painfully old CentOS kernels? jh

On 18 October 2017 at 04:50, wuzhouhui <wuzhouhui14 at mails.ucas.ac.cn> wrote: > I googled this issue and found so many people have encountered, but most of > them just said "the newer kernel doesn't have this problem, so upgrade > kernel". We can't upgrade kernel easily, so we need to *really* solve this > problem. > > If you can't update the kernel

Fine, it seems that upgrade kernel is the only effective solution. > On 18 Oct 2017, at 10:00 PM, Stephen John Smoogen <smooge at gmail.com> wrote: > > On 18 October 2017 at 04:50, wuzhouhui <wuzhouhui14 at mails.ucas.ac.cn> wrote: >> I googled this issue and found so many people have encountered, but most of >> them just said "the newer kernel doesn't

I googled this issue and found so many people have encountered, but most of them just said "the newer kernel doesn't have this problem, so upgrade kernel". We can't upgrade kernel easily, so we need to *really* solve this problem. On 10/18/2017 04:41 PM, John Hodrien wrote: > On Wed, 18 Oct 2017, wuzhouhui wrote: > >> Does anyone have encountered same problem or

Dear, use our static analysis tools, I find some bugs (Null deference pointer) for dovecot-2.2.18. Null deference pointer bugs often make program crashes, Please confim them, Thanks! 1. dovecot-2.2.18/src/config/config-request.c 332 'setting_export_section_name(ctx->prefix, def, children[i], i);', pointer 'children' in line 202 assigned NULL and if

Hi, I am using puppet as my configuration solution, it is a very good for system-level configuration management and compliance. But it is not good at batch jobs. For now, I have three options: puppi, MCollective and ControlTier. I don''t know much about them. Can anyone give me some advices that which of them is better at batch jobs. Thanks Yunfeng -- You received this message because

https://bugzilla.mindrot.org/show_bug.cgi?id=2207 Bug ID: 2207 Summary: Potential NULL deference, found using coverity Product: Portable OpenSSH Version: -current Hardware: Other OS: FreeBSD Status: NEW Severity: enhancement Priority: P5 Component: sshd Assignee: