Re: [zfs-discuss] ZFS and savecore
This is CR: 4894692 caching data in heap inflates crash dump I have a fix which I am testing now. It still needs review from Matt/Mark before it's eligible for putback, though. -j On Fri, Nov 10, 2006 at 02:40:40PM -0800, Thomas Maier-Komor wrote: > Hi, > > I'm not sure if this is the right forum, but I guess this topic will > be bounced into the right direction from here. > > With ZFS using as much physical memory as it can get, dumps and > livedumps via 'savecore -L' are huge in size. I just tested it on my > workstation and got a 1.8G vmcore file, when dumping only kernel > pages. > > Might it be possible to add an extension that would make it possible, > to support dumping without the whole ZFS cache? I guess this would > make kernel live dumps smaller again, as they used to be... > > Any comments? > > Cheers, > Tom > > > This message posted from opensolaris.org > ___ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZFS and savecore
You're right. A bug has already been raised for this: 4894692 caching data in heap inflates crash dump Thomas Maier-Komor wrote On 11/10/06 15:40,: Hi, I'm not sure if this is the right forum, but I guess this topic will be bounced into the right direction from here. With ZFS using as much physical memory as it can get, dumps and livedumps via 'savecore -L' are huge in size. I just tested it on my workstation and got a 1.8G vmcore file, when dumping only kernel pages. Might it be possible to add an extension that would make it possible, to support dumping without the whole ZFS cache? I guess this would make kernel live dumps smaller again, as they used to be... Any comments? Cheers, Tom This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] ZFS and savecore
On Fri, 2006-11-10 at 14:40 -0800, Thomas Maier-Komor wrote: > Might it be possible to add an extension that would make it possible, > to support dumping without the whole ZFS cache? I guess this would > make kernel live dumps smaller again, as they used to be... It's just a bug: 4894692 caching data in heap inflates crash dump I'd like to see it fixed, too; in addition to making crash dumps huge, it also extends downtime (and thus reduces availability) for large-configuration systems because of the time required to move the data to disk as part of the dump. - Bill ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] ZFS and savecore
Hi, I'm not sure if this is the right forum, but I guess this topic will be bounced into the right direction from here. With ZFS using as much physical memory as it can get, dumps and livedumps via 'savecore -L' are huge in size. I just tested it on my workstation and got a 1.8G vmcore file, when dumping only kernel pages. Might it be possible to add an extension that would make it possible, to support dumping without the whole ZFS cache? I guess this would make kernel live dumps smaller again, as they used to be... Any comments? Cheers, Tom This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
