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Hi all, I would like to knwon if with ZFS it''s possible to do something like that : http://tldp.org/HOWTO/LVM-HOWTO/removeadisk.html meaning : I have a zpool with 48 disks with 4 raidz2 (12 disk). Inside those 48 disk I''ve 36x 3T and 12 x 2T. Can I buy new 12x4 To disk put in the server, add in the zpool, ask zpool to migrate all data on those 12 old disk on the new and remove those old disk ? Regards. -- Albert SHIH DIO b?timent 15 Observatoire de Paris 5 Place Jules Janssen 92195 Meudon Cedex T?l?phone : 01 45 07...

...), - DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), - DMI_MATCH(DMI_BIOS_VERSION, - "ASUS PR-DLS ACPI BIOS Revision 1010"), - DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") - }, - }, - { - .callback = disable_acpi_pci, - .ident = "Acer TravelMate 36x Laptop", - .matches = { - DMI_MATCH(DMI_SYS_VENDOR, "Acer"), - DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), - }, - }, {} }; --- a/xen/arch/x86/dmi_scan.c +++ b/xen/arch/x86/dmi_scan.c @@ -229,27 +229,6 @@ static __init __attribute__((unused)) in...

Hi list, I have this problem of (relatively) poor samba read performance. Read performance is constantly, reproducibly lower than write performance and I can't really understand why. Here is the server configuration : dual octocore Opteron 6128, 32 GB RAM Adaptec 6445 RAID card 36x 2TB Hitachi SATA drives (raid 60) Sustained local disk throughput: over 850 MB/s write, over 1.4 GB/s read. kernel 3.1.10 (but I tried various versions with no more success), amd64, pure vanilla kernel.org version. Distro Debian squeeze amd64, samba 2:3.5.6~dfsg-3squeeze5 The client is an opter...

...ritten 6MB less data. Also because Dovecot writes the file backwards, it needs to do some extra jumping around and overlapping writes, but I guess OS nicely merged them. I'm not exactly sure why UW-IMAP uses so much CPU for rewriting, but it does and so Dovecot is over 7x faster in total (with 36x less CPU). Dovecot should also support delaying the rewrite. This is mostly useful for POP3 clients which deletes all the mail at logout, so they won't need the rewriting at all. Dovecot also writes all flag changes to disk immediately while UW-IMAP leaves it later to do more at once. That res...