Re: [CentOS] Btrfs going forward, was: Errors on an SSD drive

On Aug 11, 2017, at 11:00 AM, Chris Murphy wrote: > > On Fri, Aug 11, 2017 at 5:41 AM, hw wrote: >> That´s one thing I´ve been wondering about: When using btrfs RAID, do you >> need to somehow monitor the disks to see if one has failed? > > Yes. > >

Re: [CentOS] Btrfs going forward, was: Errors on an SSD drive

Warren Young wrote: [...] What do they suggest as a replacement? Stratis: https://stratis-storage.github.io/StratisSoftwareDesign.pdf Can I use that now? The main downside to Stratis I see is that it looks like 1.0 is scheduled to coincide with RHEL 8, based on the release dates of

Re: [CentOS] Errors on an SSD drive

On Fri, Aug 11, 2017 at 7:53 AM, Robert Nichols wrote: > On 08/10/2017 11:06 AM, Chris Murphy wrote: >> >> On Thu, Aug 10, 2017, 6:48 AM Robert Moskowitz >> wrote: >> >>> >>> >>> On 08/09/2017 10:46 AM, Chris Murphy wrote: If it's a bad

Re: [CentOS] Btrfs going forward, was: Errors on an SSD drive

Once upon a time, hw said: > How do you install on an XFS that is adjusted to the stripe size and the > number of > units when using hardware RAID? I tried that, without success. You have to use a kickstart - that's always been the answer if you want to customize features of the

Re: [CentOS] Btrfs going forward, was: Errors on an SSD drive

Changing the subject since this is rather Btrfs specific now. On Fri, Aug 11, 2017 at 5:41 AM, hw wrote: > Chris Murphy wrote: >> >> On Wed, Aug 9, 2017, 11:55 AM Mark Haney wrote: >> >>> To be honest, I'd not try a btrfs volume on a notebook SSD. I did

Re: [CentOS] Btrfs going forward, was: Errors on an SSD drive

On Fri, Aug 11, 2017 at 1:00 PM, Chris Murphy wrote: > Changing the subject since this is rather Btrfs specific now. > > > > >> > >> Sounds like a hardware problem. Btrfs is explicitly optimized for SSD, > the > >> maintainers worked for FusionIO for several years of its

Re: [CentOS] Btrfs going forward, was: Errors on an SSD drive

Chris Murphy wrote: Changing the subject since this is rather Btrfs specific now. On Fri, Aug 11, 2017 at 5:41 AM, hw wrote: Chris Murphy wrote: On Wed, Aug 9, 2017, 11:55 AM Mark Haney wrote: To be honest, I'd not try a btrfs volume on a notebook

Re: [CentOS] Btrfs going forward, was: Errors on an SSD drive

On Aug 11, 2017, at 11:52 AM, hw wrote: > > Software RAID with mdadm is a bad idea because > it comes with quite some performance loss. That sounds like outdated information, from the time before CPUs were fast enough to do parity RAID calculations with insignificant overhead.

Re: [CentOS] Btrfs going forward, was: Errors on an SSD drive

On 08/11/2017 10:52 AM, hw wrote: Software RAID with mdadm is a bad idea because it comes with quite some performance loss. That's not usually the case in my experience. Battery-backed write caches make benchmarks like bonnie++ look amazing, but in real workloads I typically see better

Re: [CentOS] Btrfs going forward, was: Errors on an SSD drive

Mark Haney wrote: On Fri, Aug 11, 2017 at 1:00 PM, Chris Murphy wrote: Changing the subject since this is rather Btrfs specific now. Sounds like a hardware problem. Btrfs is explicitly optimized for SSD, the maintainers worked for FusionIO for several years of

Re: [CentOS] Btrfs going forward, was: Errors on an SSD drive

On Aug 11, 2017, at 12:39 PM, hw wrote: > > Warren Young wrote: > >> [...] What do they suggest as a replacement? >> >> Stratis: https://stratis-storage.github.io/StratisSoftwareDesign.pdf > > Can I use that now? As I said, they’re targeting the first testable releases

Re: [CentOS] BIND 9.9 RRL

On 08/10/2017 04:16 PM, Leon Fauster wrote: Am 10.08.2017 um 21:00 schrieb Mark Haney : I can't seem to find anything clear on this, but is the C7 version of BIND 9.9 built with Request Rate Limiting? _Response_ Rate Limiting - I think its possible since EL6:

Re: [CentOS] Errors on an SSD drive

On 08/10/2017 11:06 AM, Chris Murphy wrote: On Thu, Aug 10, 2017, 6:48 AM Robert Moskowitz wrote: On 08/09/2017 10:46 AM, Chris Murphy wrote: If it's a bad sector problem, you'd write to sector 17066160 and see if the drive complies or spits back a write error. It

Re: [CentOS] Errors on an SSD drive

Chris Murphy wrote: On Wed, Aug 9, 2017, 11:55 AM Mark Haney wrote: To be honest, I'd not try a btrfs volume on a notebook SSD. I did that on a couple of systems and it corrupted pretty quickly. I'd stick with xfs/ext4 if you manage to get the drive working again.

Re: [CentOS] Errors on an SSD drive

On 08/11/2017 02:32 PM, m.r...@5-cent.us wrote: Robert Nichols wrote: On 08/11/2017 12:16 PM, Chris Murphy wrote: On Fri, Aug 11, 2017 at 7:53 AM, Robert Nichols wrote: On 08/10/2017 11:06 AM, Chris Murphy wrote: On Thu, Aug 10, 2017, 6:48 AM Robert Moskowitz

Re: [CentOS] Errors on an SSD drive

On Aug 11, 2017, at 1:07 PM, Robert Nichols wrote: >> Yeah he'd want to do an fsck -f and see if repairs are madestem. > > fsck checks filesystem metadata, not the content of files. Chris might have been thinking of fsck -c or -k, which do various sorts of

Re: [CentOS] Errors on an SSD drive

Robert Nichols wrote: > On 08/11/2017 12:16 PM, Chris Murphy wrote: >> On Fri, Aug 11, 2017 at 7:53 AM, Robert Nichols >> wrote: >>> On 08/10/2017 11:06 AM, Chris Murphy wrote: On Thu, Aug 10, 2017, 6:48 AM Robert Moskowitz wrote:

Re: [CentOS] Btrfs going forward, was: Errors on an SSD drive

On Fri, Aug 11, 2017 at 11:17 AM, Mark Haney wrote: > On Fri, Aug 11, 2017 at 1:00 PM, Chris Murphy > wrote: > >> Changing the subject since this is rather Btrfs specific now. >> >> >> >> >> >> >> Sounds like a hardware problem. Btrfs is

Re: [CentOS] Errors on an SSD drive

On 08/11/2017 12:16 PM, Chris Murphy wrote: On Fri, Aug 11, 2017 at 7:53 AM, Robert Nichols wrote: On 08/10/2017 11:06 AM, Chris Murphy wrote: On Thu, Aug 10, 2017, 6:48 AM Robert Moskowitz wrote: On 08/09/2017 10:46 AM, Chris Murphy

Re: [CentOS] Btrfs going forward, was: Errors on an SSD drive

On Fri, Aug 11, 2017 at 11:37 AM, hw wrote: > I want to know when a drive has failed. How can I monitor that? I´ve begun > to use btrfs only recently. Maybe checkout epylog and have it monitor for BTRFS messages. That's your earliest warning because Btrfs will complain with any

Re: [CentOS] Btrfs going forward, was: Errors on an SSD drive

On Fri, Aug 11, 2017 at 12:12 PM, Warren Young wrote: > I rather doubt btrfs will be compiled out of the kernel in EL8, and even if > it is, it’ll probably be in the CentOSPlus kernels.