On 3/15/11 5:42 PM, David Shaw wrote: > Hello, > > I understand the need for a proper stride setting when formatting a > filesystem on a RAID device. However, is there any problem in using > a stride setting when formatting a filesystem on a regular non-RAID, > non-SSD, just plain-vanilla-single-disk block device? I'm sure there > isn't any benefit to it, but I'm curious if there is any harm. > > The reason I ask is I'm looking at some code here that can be used on > either RAID or non-RAID devices. The stride setting it has is > correct for the particular RAID setup it is intended for, but it also > uses those settings when formatting a non-RAID device. > > David just FWIW, recent kernels & e2fsprogs will just automatically pick stride based on storage geometry - for md/lvm at least, and for scsi devices that export this geometry as well. ext4 has a little stripe-awareness in its allocator; otherwise, stride just staggers bitmap starts so they don't all end up on the same spindle; [1] Offhand I don't think it'd cause any harm to set stride on non-raid. -Eric [1] ext2fs_allocate_group_table() in lib/ext2fs/alloc_tables.c _______________________________________________ Ext3-users mailing list Ext3-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/ext3-users
