Re: using update-initramfs: how to get new mdadm.conf into the /boot? Or is it XFS?

2008-02-04 Thread Robin Hill
" or (the more usual solution from what I've seen) make sure there's a symlink: ln -s . /boot/boot HTH, Robin -- ___ ( ' } | Robin Hill<[EMAIL PROTECTED]> | / / ) | Little Jim says | // !! | "He fallen in de water !!" | pgpSsIYkFb4DG.pgp Description: PGP signature

Re: using update-initramfs: how to get new mdadm.conf into the /boot? Or is it XFS?

2008-02-04 Thread Robin Hill
/md/boot ro ---^^ Are you sure that's right? Looks like a typo to me. Cheers, Robin -- ___ ( ' } | Robin Hill<[EMAIL PROTECTED]> | / / ) | Little Jim says | // !! | "He fallen in de water !!" | pgpLybDJ7EGiw.pgp Description: PGP signature

Re: raid1 or raid10 for /boot

2008-02-04 Thread Robin Hill
On Mon Feb 04, 2008 at 12:21:40PM +0100, Keld Jørn Simonsen wrote: > On Mon, Feb 04, 2008 at 09:17:35AM +0000, Robin Hill wrote: > > On Mon Feb 04, 2008 at 07:34:54AM +0100, Keld Jørn Simonsen wrote: > > > > > I understand that lilo and grub only can boot partitions that

Re: RAID needs more to survive a power hit, different /boot layout for example (was Re: draft howto on making raids for surviving a disk crash)

2008-02-04 Thread Robin Hill
On Mon Feb 04, 2008 at 05:06:09AM -0600, Moshe Yudkowsky wrote: > Robin, thanks for the explanation. I have a further question. > > Robin Hill wrote: > >> Once the file system is mounted then hdX,Y maps according to the >> device.map file (which may actually bear no

Re: raid1 or raid10 for /boot

2008-02-04 Thread Robin Hill
2-disk RAID-10 could - I'm not sure how that'd be layed out). RAID-10 uses striping as well as mirroring, and the striping breaks both grub and lilo (and, AFAIK, every other boot manager currently out there). Cheers, Robin -- ___ ( ' } |

Re: RAID needs more to survive a power hit, different /boot layout for example (was Re: draft howto on making raids for surviving a disk crash)

2008-02-03 Thread Robin Hill
On Sun Feb 03, 2008 at 02:46:54PM -0600, Moshe Yudkowsky wrote: > Robin Hill wrote: > >> This is wrong - the disk you boot from will always be hd0 (no matter >> what the map file says - that's only used after the system's booted). >> You need to remap the hd0

Re: RAID needs more to survive a power hit, different /boot layout for example (was Re: draft howto on making raids for surviving a disk crash)

2008-02-03 Thread Robin Hill
or the /boot filesystem and don't have it automounted. I only mount the partition to install a new kernel, then unmount it again. Cheers, Robin -- ___ ( ' } | Robin Hill<[EMAIL PROTECTED]> | / / ) | Little Jim says | // !! | "He fallen in de water !!" | pgp9vtpHG44V7.pgp Description: PGP signature

Re: Error mounting a reiserfs on renamed raid1

2008-01-25 Thread Robin Hill
;t work either. > Presumably the superblock for the file system cannot be found because it's now offset due to the above issue. HTH, Robin -- ___ ( ' } | Robin Hill<[EMAIL PROTECTED]> | / / ) | Little Jim says

Re: mdadm error when trying to replace a failed drive in RAID5 array

2008-01-20 Thread Robin Hill
aller than the others in the array (the array's currently growing so I haven't delved any further yet). Have you checked the actual partition sizes? Particularly if it's a different type of drive as drives from different manufacturers can vary by quite a large amount. Cheers,

Re: Linux RAID Partition Offset 63 cylinders / 30% performance hit?

2007-12-19 Thread Robin Hill
This looks to be a normal disk - the partition offsets shouldn't be relevant here (barring any knowledge of the actual physical disk layout anyway, and block remapping may well make that rather irrelevant). That's my take on this one anyway. Cheers, Robin -

Re: Raid over 48 disks

2007-12-18 Thread Robin Hill
y heavy database load) on 27 disks for a couple of months now though. Cheers, Robin -- ___ ( ' } | Robin Hill<[EMAIL PROTECTED]> | / / ) | Little Jim says | // !! | "He fallen in de water !!" | pgpFz4s5k2eD3.pgp Description: PGP signature

Re: Fwd: issues rebuilding raid array.

2007-10-22 Thread Robin Hill
e that the array has 6 active devices and a spare. You currently have 4 working active devices, a failed active device and the spare. What's happened to the other device? You can't get the array working with 4 out of 6 devices so you'll need to either find the other active de

Re: Partitions with == or \approx same size ?

2007-07-20 Thread Robin Hill
HTH, Robin -- ___ ( ' } | Robin Hill<[EMAIL PROTECTED]> | / / ) | Little Jim says | // !! | "He fallen in de water !!" | pgpsoIAmjQDpX.pgp Description: PGP signature

Re: Software RAID5 Horrible Write Speed On 3ware Controller!!

2007-07-18 Thread Robin Hill
nks (especially if the array has been partitioned)? In which case would it be better (performance-wise) to provide the su,sw values or not? I'm planning on doing some benchmarking first but thought I'd check whether there's any definitive answers first. Cheers, Robin -

Re: Software based SATA RAID-5 expandable arrays?

2007-06-19 Thread Robin Hill
as experience, good or bad, they can share. HTH, Robin -- ___ ( ' } | Robin Hill<[EMAIL PROTECTED]> | / / ) | Little Jim says | // !! | "He fallen in de water !!" | pgpnaGrutL8Gm.pgp Description: PGP signature

Re: Questions about the speed when MD-RAID array is being initialized.

2007-05-10 Thread Robin Hill
s done so that the array is ready for use very quickly. So what you're seeing in /proc/mdstat is the speed in calculating and writing the data for the final drive (and is, unless computationally limited, going to be the write speed of the single drive). HTH, Robin -- ___ ( ' } | Robin Hill<[EMAIL PROTECTED]> | / / ) | Little Jim says | // !! | "He fallen in de water !!" | pgpuxGkc8VmMd.pgp Description: PGP signature