Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-15 Thread Bill Davidsen
Paul Clements wrote: Bill Davidsen wrote: Second, AFAIK nbd hasn't working in a while. I haven't tried it in ages, but was told it wouldn't work with smp and I kind of lost interest. If Neil thinks it should work in 2.6.21 or later I'll test it, since I have a machine which wants a fresh inst

Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-14 Thread Mike Snitzer
On 6/14/07, Paul Clements <[EMAIL PROTECTED]> wrote: Mike Snitzer wrote: > On 6/14/07, Paul Clements <[EMAIL PROTECTED]> wrote: >> Mike Snitzer wrote: >> >> > Here are the steps to reproduce reliably on SLES10 SP1: >> > 1) establish a raid1 mirror (md0) using one local member (sdc1) and >> > one

Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-14 Thread Paul Clements
Mike Snitzer wrote: On 6/14/07, Paul Clements <[EMAIL PROTECTED]> wrote: Mike Snitzer wrote: > Here are the steps to reproduce reliably on SLES10 SP1: > 1) establish a raid1 mirror (md0) using one local member (sdc1) and > one remote member (nbd0) > 2) power off the remote machine, whereby seve

Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-14 Thread Mike Snitzer
On 6/14/07, Paul Clements <[EMAIL PROTECTED]> wrote: Mike Snitzer wrote: > Here are the steps to reproduce reliably on SLES10 SP1: > 1) establish a raid1 mirror (md0) using one local member (sdc1) and > one remote member (nbd0) > 2) power off the remote machine, whereby severing nbd0's connectio

Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-14 Thread Paul Clements
Mike Snitzer wrote: Here are the steps to reproduce reliably on SLES10 SP1: 1) establish a raid1 mirror (md0) using one local member (sdc1) and one remote member (nbd0) 2) power off the remote machine, whereby severing nbd0's connection 3) perform IO to the filesystem that is on the md0 device t

Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-14 Thread Mike Snitzer
On 6/14/07, Paul Clements <[EMAIL PROTECTED]> wrote: Bill Davidsen wrote: > Second, AFAIK nbd hasn't working in a while. I haven't tried it in ages, > but was told it wouldn't work with smp and I kind of lost interest. If > Neil thinks it should work in 2.6.21 or later I'll test it, since I have

Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-14 Thread Paul Clements
Mike Snitzer wrote: Just a quick update; it is really starting to look like there is definitely an issue with the nbd kernel driver. I booted the SLES10 2.6.16.46-0.12-smp kernel with maxcpus=1 to test the theory that the nbd SMP fix that went into 2.6.16 was in some way causing this MD/NBD han

Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-14 Thread Paul Clements
Bill Davidsen wrote: Second, AFAIK nbd hasn't working in a while. I haven't tried it in ages, but was told it wouldn't work with smp and I kind of lost interest. If Neil thinks it should work in 2.6.21 or later I'll test it, since I have a machine which wants a fresh install soon, and is both

Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-14 Thread Mike Snitzer
On 6/14/07, Bill Davidsen <[EMAIL PROTECTED]> wrote: Mike Snitzer wrote: > On 6/13/07, Mike Snitzer <[EMAIL PROTECTED]> wrote: >> On 6/13/07, Mike Snitzer <[EMAIL PROTECTED]> wrote: >> > On 6/12/07, Neil Brown <[EMAIL PROTECTED]> wrote: >> ... >> > > > > On 6/12/07, Neil Brown <[EMAIL PROTECTED]>

Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-14 Thread Bill Davidsen
Mike Snitzer wrote: On 6/13/07, Mike Snitzer <[EMAIL PROTECTED]> wrote: On 6/13/07, Mike Snitzer <[EMAIL PROTECTED]> wrote: > On 6/12/07, Neil Brown <[EMAIL PROTECTED]> wrote: ... > > > > On 6/12/07, Neil Brown <[EMAIL PROTECTED]> wrote: > > > > > On Tuesday June 12, [EMAIL PROTECTED] wrote: > >

Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-13 Thread Mike Snitzer
On 6/13/07, Mike Snitzer <[EMAIL PROTECTED]> wrote: On 6/13/07, Mike Snitzer <[EMAIL PROTECTED]> wrote: > On 6/12/07, Neil Brown <[EMAIL PROTECTED]> wrote: ... > > > > On 6/12/07, Neil Brown <[EMAIL PROTECTED]> wrote: > > > > > On Tuesday June 12, [EMAIL PROTECTED] wrote: > > > > > > > > > > > >

Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-13 Thread Mike Snitzer
On 6/13/07, Mike Snitzer <[EMAIL PROTECTED]> wrote: On 6/12/07, Neil Brown <[EMAIL PROTECTED]> wrote: ... > > > On 6/12/07, Neil Brown <[EMAIL PROTECTED]> wrote: > > > > On Tuesday June 12, [EMAIL PROTECTED] wrote: > > > > > > > > > > I can provided more detailed information; please just ask. >

Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-12 Thread Mike Snitzer
On 6/12/07, Neil Brown <[EMAIL PROTECTED]> wrote: On Tuesday June 12, [EMAIL PROTECTED] wrote: > > I can provided more detailed information; please just ask. > A complete sysrq trace (all processes) might help. I'll send it to you off list. thanks, Mike - To unsubscribe from this list: send t

Re: raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-12 Thread Neil Brown
On Tuesday June 12, [EMAIL PROTECTED] wrote: > > I can provided more detailed information; please just ask. > A complete sysrq trace (all processes) might help. NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to [EMAIL PROTECTED] More m

raid1 with nbd member hangs MD on SLES10 and RHEL5

2007-06-12 Thread Mike Snitzer
When using raid1 with one local member and one nbd member (marked as write-mostly) MD hangs when trying to format /dev/md0 with ext3. Both 'cat /proc/mdstat' and 'mdadm --detail /dev/md0' hang infinitely. I've not tried to reproduce on 2.6.18 or 2.6.19ish kernel.org kernels yet but this issue aff