Re: RAID 5 Array fails if first disk is missing

2000-01-05 Thread Marc Haber
On Thu, 25 Nov 1999 09:35:55 +0100, you wrote: In contrast, raidstart uses the raidtab just for getting ONE device (the first one) for your raid device. It reads the superblock off this first devices and uses this info to add the other devices. On my test machine, I have found out something

Re: RAID 5 Array fails if first disk is missing

2000-01-05 Thread Martin Bene
At 21:39 04.01.00 GMT, Marc Haber wrote: On Sat, 13 Nov 1999 15:59:50 GMT, you wrote: For a test, I disconnected sda while system power was off and expected the system to come up on the remaining disks. However, the RAID array wasn't detected: |autodetecting RAID arrays |autorun... | ...

Re: RAID 5 Array fails if first disk is missing

2000-01-05 Thread Marc Haber
On Wed, 05 Jan 2000 11:00:29 +0100, you wrote: At 21:39 04.01.00 GMT, Marc Haber wrote: On Sat, 13 Nov 1999 15:59:50 GMT, you wrote: For a test, I disconnected sda while system power was off and expected the system to come up on the remaining disks. However, the RAID array wasn't detected:

Re: RAID 5 Array fails if first disk is missing

2000-01-04 Thread Marc Haber
On Sat, 13 Nov 1999 15:59:50 GMT, you wrote: For a test, I disconnected sda while system power was off and expected the system to come up on the remaining disks. However, the RAID array wasn't detected: |autodetecting RAID arrays |autorun... | ... autorun DONE. Two months later, I took the

Re: RAID 5 Array fails if first disk is missing

1999-11-24 Thread Marc Haber
In ka.lists.linux.raid, I wrote: /proc/mdstat shows no active RAID devices, raidstart /dev/md0 gives: |blkdev_open() failed: -6 |md: could not lock sdp15, zero-size= Marking faulty. |could not import sdp15! |autostart sdp14 failed! |/dev/md0: Invalid argument I wrote this two weeks ago without

Re: RAID 5 Array fails if first disk is missing

1999-11-24 Thread Mike Bird
At 10:55 AM 11/24/99 GMT, Marc Haber wrote: I wrote this two weeks ago without getting a single comment. What we have here is a situation in the RAID 5 code that WILL eat ALL data on a RAID 5 array on a single disk failure. Why have RAID 5 in the first place if this can happen? We don't use RAID

Re: RAID 5 Array fails if first disk is missing

1999-11-16 Thread Marc Haber
I am an idiot. Sent the first version of that article to owner-linux-raid :-( This is a later version. On Sat, 13 Nov 1999 15:59:50 GMT, I wrote: For a test, I disconnected sda while system power was off and expected the system to come up on the remaining disks. However, the RAID array wasn't

RAID 5 Array fails if first disk is missing

1999-11-13 Thread Marc Haber
Hi! I have a RAID 5 array running off three disks, sda, sdb and sdc. The system is set up so that it can boot from sda or sdb, both disks do have identical copies of the root fs. kernel is 2.2.13 with raid-patches from August 24, raidtools-0.90 from the same date. For a test, I disconnected sda