Using gjournal + gmirror on 7.0-RELEASE-p1 (amd64) server
Hi list, I've two Intel Xeon dual core-based servers running 7.0-RELEASE-p1 (amd64). Those servers are running a software raid-1 using geom_gmirror. Today, when I rebooted them twice with 'reboot' command, raid-1 running on both servers got degraded to 0% + filesystem check resulted in 4-5 lost non-critical files. Later I found out that 'reboot' is not a recommended way to reboot a system, and I should use 'shutdown -r now'. Anyways, I'm thinking to use gjournal (in addition to gmirror) on both servers to avoid such situation in future. I'm already using gjournal on my desktop (with no gmirror) running FreeBSD 7.0-RELEASE-p1 (amd64), with no issues. So, I wanted to know if gjournal + gmirror combo is stable enough to be used on a servers. And, if I go for gjournal, since I've an existing filesystem, I've to create a separate gjournal slice, so is it okay to create that gjournal slice on a non-gmirror backed storage, hmm...? TIA -- Ashish Shukla आशीष शुक्ल http://wahjava.wordpress.com/ ·-- ·- ·--- ·- ···- ·- ·--·-· --· -- ·- ·· ·-·· ·-·-·- -·-· --- -- pgpj6V55JmrrZ.pgp Description: PGP signature
Re: Using gjournal + gmirror on 7.0-RELEASE-p1 (amd64) server
Ashish Shukla आशीष शुक्ल wrote: Hi list, I've two Intel Xeon dual core-based servers running 7.0-RELEASE-p1 (amd64). Those servers are running a software raid-1 using geom_gmirror. Today, when I rebooted them twice with 'reboot' command, raid-1 running on both servers got degraded to 0% + filesystem check resulted in 4-5 lost non-critical files. Later I found out that 'reboot' is not a recommended way to reboot a system, and I should use 'shutdown -r now'. Anyways, I'm thinking to use gjournal (in addition to gmirror) on both servers to avoid such situation in future. I'm already using gjournal on my desktop (with no gmirror) running FreeBSD 7.0-RELEASE-p1 (amd64), with no issues. So, I wanted to know if gjournal + gmirror combo is stable enough to be used on a servers. And, if I go for gjournal, since I've an existing filesystem, I've to create a separate gjournal slice, so is it okay to create that gjournal slice on a non-gmirror backed storage, hmm...? TIA You should keep in mind that the space required for the journal depends on the usage load and not the size of the data provider. In other words, if you are using the default 1Gb journal size on your desktop, it may not be enough for a busy server. I've used gjournal+gmirror on a machine - not anything really heavy loaded, but it has given me no problems. I first created the journals, and the gmirror-ed the entire disk. It works as you should expect. I have not tried creating the journal on a non-mirrored storage. I suppose this would work too, but I have no idea how safe it would be. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Using gjournal + gmirror on 7.0-RELEASE-p1 (amd64) server
Manolis == Manolis Kiagias [EMAIL PROTECTED] writes: Manolis Ashish Shukla आशीष शुक्ल wrote: [snip] And, if I go for gjournal, since I've an existing filesystem, I've to create a separate gjournal slice, so is it okay to create that gjournal slice on a non-gmirror backed storage, hmm...? Manolis You should keep in mind that the space required for the journal Manolis depends on the usage load and not the size of the data provider. In Manolis other words, if you are using the default 1Gb journal size on your Manolis desktop, it may not be enough for a busy server. Okay. Manolis I've used gjournal+gmirror on a machine - not anything really heavy Manolis loaded, but it has given me no problems. I first created the journals, Manolis and the gmirror-ed the entire disk. It works as you should expect. I Manolis have not tried creating the journal on a non-mirrored storage. I Manolis suppose this would work too, but I have no idea how safe it would be. I'll also opt for journal on mirrored storage, which is the same storage device as data provider. Thanks for the reply -- Ashish Shukla आशीष शुक्ल http://wahjava.wordpress.com/ ·-- ·- ·--- ·- ···- ·- ·--·-· --· -- ·- ·· ·-·· ·-·-·- -·-· --- -- pgp9kFB64l6qz.pgp Description: PGP signature
