Re: [zfs-discuss] Change the volblocksize of a ZFS volume
stuart anderson writes: > > > > Question : > > > > > > > > Is there a way to change the volume blocksize > > say > > > via 'zfs snapshot send/receive'? > > > > > > > > As I see things, this isn't possible as the > > target > > > volume (including property values) gets > > overwritten > > > by 'zfs receive'. > > > > > > > > > > By default, properties are not received. To pass > > > properties, you need > > > to use > > > the -R flag. > > > > I have tried that, and while it works for properties > > like compression, I have not found a way to preserve > > a non-default volblocksize across zfs send | zfs > > receive. the zvol created on the receive side is > > always defaulting to 8k. Is there a way to do this? > > > > I spoke too soon. More particularly, during the zfs send/recv > processes the receiving side reports 8k, but once the receive is done > the volblocksize is reporting the expected value as sent with -R. > > Hopefully, this is just a reporting bug during an active receive. > > Note, this was observed with s10u7 (x86). > Sounds like so. I would be very surprised if one would be able to change the volblocksize of a zvol through send/receive (with or without -R). It's an immutable property of the zvol. -r > Thanks. > -- > 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] Change the volblocksize of a ZFS volume
> > > Question : > > > > > > Is there a way to change the volume blocksize > say > > via 'zfs snapshot send/receive'? > > > > > > As I see things, this isn't possible as the > target > > volume (including property values) gets > overwritten > > by 'zfs receive'. > > > > > > > By default, properties are not received. To pass > > properties, you need > > to use > > the -R flag. > > I have tried that, and while it works for properties > like compression, I have not found a way to preserve > a non-default volblocksize across zfs send | zfs > receive. the zvol created on the receive side is > always defaulting to 8k. Is there a way to do this? > I spoke too soon. More particularly, during the zfs send/recv processes the receiving side reports 8k, but once the receive is done the volblocksize is reporting the expected value as sent with -R. Hopefully, this is just a reporting bug during an active receive. Note, this was observed with s10u7 (x86). Thanks. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Change the volblocksize of a ZFS volume
> > Question : > > > > Is there a way to change the volume blocksize say > via 'zfs snapshot send/receive'? > > > > As I see things, this isn't possible as the target > volume (including property values) gets overwritten > by 'zfs receive'. > > > > By default, properties are not received. To pass > properties, you need > to use > the -R flag. I have tried that, and while it works for properties like compression, I have not found a way to preserve a non-default volblocksize across zfs send | zfs receive. the zvol created on the receive side is always defaulting to 8k. Is there a way to do this? Thanks. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Change the volblocksize of a ZFS volume
Nick Smith wrote: > Dear all, > > Background: > > I have a ZFS volume with the incorrect volume blocksize for the filesystem > (NTFS) that it is supporting. > > This volume contains important data that is proving impossible to copy using > Windows XP Xen HVM that "owns" the data. > > The disparity in volume blocksize (current set to 512bytes!!) is causing > significant performance problems. > > Question : > > Is there a way to change the volume blocksize say via 'zfs snapshot > send/receive'? > > As I see things, this isn't possible as the target volume (including property > values) gets overwritten by 'zfs receive'. > By default, properties are not received. To pass properties, you need to use the -R flag. For examples, see the ZFS Administration Guide, http://www.opensolaris.org/os/community/zfs/docs/zfsadmin.pdf -- richard > Many Thanks for any help. > > Nick Smith > -- > 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
