公司新购了台存储,24块SATA盘,每块2T,用22块做了两组RAID6,剩余两块为热备;两组RAID6的物理卷放进了一个逻辑卷,由此这个逻辑卷直达32T。 # lvdisplay --- Logical volume --- LV Path /dev/VolGroup01/LogVol00 LV Name LogVol00 VG Name VolGroup01 LV UUID Ts6MOq-etKx-GDPU-0AHF-jIMi-pqrz-cssj7v LV Write Access read/write LV Creation host, time , LV Status available # open 0 LV Size 32.70 TiB Current LE 8570874 Segments 2 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:2 以前从来没格式化过这么大空间的卷,尝试用ext4,做了好多遍都没能成功;改用xfs,终于搞定,在此记一笔。 1、修改yum配置文件,找到centosplus将enabled=0改为1 #vim /etc/yum.repos.d/CentOS-Base.repo [centosplus] enabled=1 2、添加xfs需要的用户组 #useradd mockbuild 3、安装xfs相关包,挂载xfs内核 # yum install xfsprogs kmod-xfs xfsdump xfsprogs-devel # modprobe xfs # lsmod |grep xfs xfs 1042331 0 exportfs 4236 1 xfs 4、看看mkfs.xfs的参数选项 # mkfs.xfs --help mkfs.xfs: invalid option -- '-' unknown option -- Usage: mkfs.xfs /* blocksize */ [-b log=n|size=num] /* data subvol */ [-d agcount=n,agsize=n,file,name=xxx,size=num, (sunit=value,swidth=value|su=num,sw=num), sectlog=n|sectsize=num /* inode size */ [-i log=n|perblock=n|size=num,maxpct=n,attr=0|1|2, projid32bit=0|1] /* log subvol */ [-l agnum=n,internal,size=num,logdev=xxx,version=n sunit=value|su=num,sectlog=n|sectsize=num, lazy-count=0|1] /* label */ [-L label (maximum 12 characters)] /* naming */ [-n log=n|size=num,version=2|ci] /* prototype file */ [-p fname] /* quiet */ [-q] /* realtime subvol */ [-r extsize=num,size=num,rtdev=xxx] /* sectorsize */ [-s log=n|size=num] /* version */ [-V] devicename xxxm (xxx MiB), xxxg (xxx GiB), xxxt (xxx TiB) or xxxp (xxx PiB). 5、开始格式化 # mkfs.xfs -f -i size=512 -l size=128m,lazy-count=1 -d agcount=16 /dev/VolGroup01/LogVol00 agsize (548535936 blocks) too big, maximum is 268435455 blocks 提示agsize太大了,增大agcount到32试试 # mkfs.xfs -f -b size=16384 -i size=512 -l size=128m,lazy-count=1 -d agcount=32 /dev/VolGroup01/LogVol00 agsize (68566992 blocks) too big, maximum is 67108863 blocks 还是提示agsize太大,不过68566992 blocks已经不比maximum值大多少了,再增大agcount一倍试试 # mkfs.xfs -f -i size=512 -l size=128m,lazy-count=1 -d agcount=64 /dev/VolGroup01/LogVol00 meta-data=/dev/VolGroup01/LogVol00 isize=512 agcount=64, agsize=137133984 blks = sectsz=512 attr=2, projid32bit=0 data = bsize=4096 blocks=8776574976, imaxpct=5 = sunit=0 swidth=0 blks naming =version 2 bsize=4096 ascii-ci=0 log =internal log bsize=4096 blocks=32768, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=4096 blocks=0, rtextents=0 以上显示已经格式化成功,块大小是默认大小4K;下面mount到/data下,挂载成功! # mount -t xfs /dev/VolGroup01/LogVol00 /data 期间尝试过将块大小设大一点,比如16K,格式化可以完成,但挂载时总是报错; # mkfs.xfs -f -b size=16384 -i size=512 -l size=128m,lazy-count=1 -d agcount=64 /dev/VolGroup01/LogVol00 meta-data=/dev/VolGroup01/LogVol00 isize=512 agcount=64, agsize=34283496 blks = sectsz=512 attr=2, projid32bit=0 data = bsize=16384 blocks=2194143744, imaxpct=5 = sunit=0 swidth=0 blks naming =version 2 bsize=16384 ascii-ci=0 log =internal log bsize=16384 blocks=8192, version=2 = sectsz=512 sunit=0 blks, lazy-count=1 realtime =none extsz=16384 blocks=0, rtextents=0 # mount -t xfs /dev/VolGroup01/LogVol00 /data mount: Function not implemented # pagesize 4096
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