Re: confused raid1

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Try this suggestion (regarding modules.conf).

https://www.redhat.com/archives/fedora-list/2003-December/msg05205.html

Tyler.

Jon Lewis wrote:

On Mon, 15 Aug 2005, Tyler wrote:

A few questions:

a) what kernel version are you using?
b) what mdadm version are you using?
c) what messages conscerning the raid are in the log when its failing
one of the drives and making hdc1 an active drive?
d) what linux distribution (and version) are you using?


The server is RH 8.0. The kernel is a 3rd party "meant for RH 8" one, 2.4.20-28_36.rh8.0.atsmp. We've had alot of issues with drivers for the QLA2100 FC host adapter and XFS, so I'm somewhat hesitant to try different kernels. Last one we tried was a 2.4.31 snapshot from SGI's cvs (supposed to have the latest/greatest XFS driver, and I'd added the latest QLA2100 driver module from qlogic to it). In that kernel, NFS export of XFS was broken. Clients could mount, but not actually read files.

It's quite probable, that before the following reboot, md1 was hdc1 and hde1.

Aug  9 02:02:39  kernel: md: created md1
Aug  9 02:02:39  kernel: md: bind<hdc1,1>
Aug  9 02:02:39  kernel: md: bind<hde1,2>
Aug  9 02:02:39  kernel: md: bind<hdg1,3>
Aug  9 02:02:39  kernel: md: running: <hdg1><hde1><hdc1>
Aug  9 02:02:39  kernel: md: hdg1's event counter: 000000b0
Aug  9 02:02:39  kernel: md: hde1's event counter: 000000b4
Aug  9 02:02:39  kernel: md: hdc1's event counter: 000000b4
Aug 9 02:02:39 kernel: md: superblock update time inconsistency -- using the most recent one
Aug  9 02:02:39  kernel: md: freshest: hde1
Aug  9 02:02:39  kernel: md: kicking non-fresh hdg1 from array!
Aug  9 02:02:39  kernel: md: unbind<hdg1,2>
Aug  9 02:02:39  kernel: md: export_rdev(hdg1)
Aug 9 02:02:39 kernel: md: RAID level 1 does not need chunksize! Continuing anyway. Aug 9 02:02:39 kernel: kmod: failed to exec /sbin/modprobe -s -k md-personality-3, errno = 2
Aug  9 02:02:39  kernel: md: personality 3 is not loaded!
Aug  9 02:02:39  kernel: md :do_md_run() returned -22
Aug  9 02:02:39  kernel: md: md1 stopped.
Aug  9 02:02:39  kernel: md: unbind<hde1,1>
Aug  9 02:02:39  kernel: md: export_rdev(hde1)
Aug  9 02:02:39  kernel: md: unbind<hdc1,0>
Aug  9 02:02:39  kernel: md: export_rdev(hdc1)
Aug  9 02:02:39  kernel: md: ... autorun DONE.

mdadm - v1.4.0 - 29 Oct 2003 (not exactly the latest)

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