gmirror and the UFS file systems
Hi, I'm getting ready to move forward on enabling gmirror on my churches website server (FreeBSD 7.0-RELEASE p4). I used defaults during the install (most importantly for this, the file system defaults). I've read in the manual pages that the data for the mirror is contained in the last sector of the drive/partitions. So, I want to mirror the entire drive (ad4) to the second drive (ad5). This server doesn't yet have much data at all. I'm wondering if I turn on this mirror, will anything important be overwritten in the last sector? Andy ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: gmirror and the UFS file systems
On Friday 28 November 2008 18:08:19 Andrew Falanga wrote: I'm getting ready to move forward on enabling gmirror on my churches website server (FreeBSD 7.0-RELEASE p4). I used defaults during the install (most importantly for this, the file system defaults). I've read in the manual pages that the data for the mirror is contained in the last sector of the drive/partitions. So, I want to mirror the entire drive (ad4) to the second drive (ad5). This server doesn't yet have much data at all. I'm wondering if I turn on this mirror, will anything important be overwritten in the last sector? I've converted UFS filesystems with just the base install and a few ports over to gmirror many times and no problem. I guess the question can best be paraphrased as: If I cross a street in a residential area at 4am in the morning, will I get hit by a car? Also, gmirror create will tell you if the last sector contains data, just like a driver would honk his horn. -- Mel Problem with today's modular software: they start with the modules and never get to the software part. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: gmirror and the UFS file systems
I'm getting ready to move forward on enabling gmirror on my churches website server (FreeBSD 7.0-RELEASE p4). I used defaults during the install (most importantly for this, the file system defaults). I've read in the manual pages that the data for the mirror is contained in the last sector of the drive/partitions. So, I want to mirror the entire drive (ad4) to the second drive (ad5). This server doesn't yet have much data at all. I'm wondering if I turn on this mirror, will anything important be overwritten in the last sector? is your partition size multiply of fragment size without remainder? if not (quite a big chance) at least one sector at the end is unused and never be. so go on, but then fix disklabel, as c partition is 1 sector smaller. of course - boot from livecd to do this. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Re: gmirror and the UFS file systems
is your partition size multiply of fragment size without remainder? if not (quite a big chance) at least one sector at the end is unused and never be. so go on, but then fix disklabel, as c partition is 1 sector smaller. of course - boot from livecd to do this. Thanks both Mel and Wojciech for the advice. Andy ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
