> -----Original Message----- > From: linux-cluster-bounces@xxxxxxxxxx > [mailto:linux-cluster-bounces@xxxxxxxxxx] On Behalf Of > HAWKER, Dan (external) > Sent: Tuesday, March 13, 2007 2:57 AM > To: linux clustering > Subject: RE: Using GFS on Compact Flash > > > > Does it make sense to use GFS (local or cluster mode) on Compact > > Flash? Will it greatly reduce the life expectancy of the > Compact Flash > > compared to using a local file system? The rational behind this is > > that GFS will issue way more writes to the disk for its internal > > operations ( such as dlm locking etc). > > > > Ummm, why would you want to use CF & GFS together??? > > Surely you'd only use GFS for a shared pool of storage. As > the largest CF card you can sensibly get atm is around 8GB, > that's not a lot of storage to be shared by multiple nodes. > > Now we use CF cards for embedded boxes, but for exactly the > reasons you mentioned (poor MTBF/reduced lifetime due to the > read/write process), our cards are invariably read-only > filesystems and we use ext2 to get rid of the journaling too. > No swap either (which has caused some trouble on one or two > occasions, but that's another story). > > Dan Have you done any measurements in regard to the amount of extra read/write introduced by GFS+cluster suite+fencing+journaling etc? And/or how much CF lifetime reduction is that translated to? Lin > > -- > > Dan Hawker > Linux System Administrator > Astrium > http://www.astrium.eads.net > > -- > > This email (including any attachments) may contain > confidential and/or privileged information or information > otherwise protected from disclosure. > If you are not the intended recipient, please notify the > sender immediately, do not copy this message or any > attachments and do not use it for any purpose or disclose its > content to any person, but delete this message and any > attachments from your system. > Astrium disclaims any and all liability if this email > transmission was virus corrupted, altered or falsified. > --------------------------------------------------------------------- > Astrium Limited, Registered in England and Wales No. 2449259 > Registered Office: Gunnels Wood Road, Stevenage, > Hertfordshire, SG1 2AS, England > > -- > Linux-cluster mailing list > Linux-cluster@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/linux-cluster > -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
