assemble array without rebuild - readonly mode?

2007-05-26 Thread Tim Harvey
Greetings, I've got a RAID5 array running on 4 PATA IDE drives on a linux 2.6.15 kernel which has had a drive go out. When I replace the drive and force a re-assembly a rebuild starts but at a certain point through the rebuild an uncorrectable error occurs on another disk and kicks the 2nd disk o

Re: Raid-5 long write wait while reading

2007-05-26 Thread tj
Thomas Jager wrote: Hi list. I run a file server on MD raid-5. If a client reads one big file and at the same time another client tries to write a file, the thread writing just sits in uninterruptible sleep until the reader has finished. Only very small amount of writes get trough while the r

Re: raid10 kernel panic on sparc64

2007-05-26 Thread David Miller
From: Jan Engelhardt <[EMAIL PROTECTED]> Date: Sat, 26 May 2007 17:10:30 +0200 (MEST) > > On Apr 12 2007 14:26, David Miller wrote: > > > >> Kernel is kernel-smp-2.6.16-1.2128sp4.sparc64.rpm from Aurora Corona. > >> Perhaps it helps, otherwise hold your breath until I reproduce it. > > > >Jan, if

Re: raid10 kernel panic on sparc64

2007-05-26 Thread Jan Engelhardt
On Apr 12 2007 14:26, David Miller wrote: > >> Kernel is kernel-smp-2.6.16-1.2128sp4.sparc64.rpm from Aurora Corona. >> Perhaps it helps, otherwise hold your breath until I reproduce it. > >Jan, if you can reproduce this with the current 2.6.20 vanilla >kernel I'd be very interested in a full trac

Re: [RFD] BIO_RW_BARRIER - what it means for devices, filesystems, and dm/md.

2007-05-26 Thread Tejun Heo
Hello, Neil Brown. Please cc me on blkdev barriers and, if you haven't yet, reading Documentation/block/barrier.txt can be helpful too. Neil Brown wrote: [--snip--] > 1/ SAFE. With a SAFE device, there is no write-behind cache, or if > there is it is non-volatile. Once a write complet

mismatch_cnt = 128 for root (/) md raid1 device

2007-05-26 Thread Justin Piszcz
Kernel 2.6.21.3 Fri May 25 20:00:02 EDT 2007: Executing RAID health check for /dev/md0... Fri May 25 20:00:03 EDT 2007: Executing RAID health check for /dev/md1... Fri May 25 20:00:04 EDT 2007: Executing RAID health check for /dev/md2... Fri May 25 20:00:05 EDT 2007: Executing RAID health check f