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2011 May 04
2
Cannot resize btrfs volume
Hello,
I added a new disk into our RAID5 array, it looks like this:
md2 : active raid5 sdd4[3] sde4[4] sda4[0] sdc4[2] sdb4[1]
3767274240 blocks level 5, 64k chunk, algorithm 2 [5/5] [UUUUU]
# btrfs fi sh
Label: none uuid: 5534d2e7-be31-49c7-8ab7-90c5ab8afe18
Total devices 1 FS bytes used 2.24TB
devid 3 size 2.63TB used 2.63TB path /dev/md2
# mount
...
/dev/md2 on /home type btrfs (rw,noatime,compress)
# btrfs filesystem resize max /home
Resize ''/home'' of ...
2012 Nov 13
1
mdX and mismatch_cnt when building an array
...are RAID-6 array on CentOS 6.3
that the mismatch_cnt grows monotonically while the array is building:
# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md11 : active raid6 sdg[5] sdf[4] sde[3] sdd[2] sdc[1] sdb[0]
3904890880 blocks super 1.2 level 6, 512k chunk, algorithm 2 [6/6] [UUUUUU]
[==================>..] resync = 90.2% (880765600/976222720) finish=44.6min speed=35653K/sec
# cat /sys/block/md11/md/mismatch_cnt
1439285488
The mismatch count grows until the assembly is complete, and then remains
at its highest value. A subsequent check resets it to zero (immedia...
2009 Apr 17
0
problem with 5.3 upgrade or just bad timing?
...ux xenmaster.dimension-x.local 2.6.18-128.1.6.el5xen #1 SMP Wed Apr
1 09:53:14 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux
# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md1 : active raid5 sdk1[2] sdj1[4] sdi1[3] sdh1[0] sdg1[1]
976783616 blocks level 5, 64k chunk, algorithm 2 [5/5] [UUUUU]
md0 : active raid5 sdf1[3] sde1[1] sdd1[4](S) sdc1[0] sdb1[2]
2197715712 blocks level 5, 64k chunk, algorithm 2 [4/4] [UUUU]
unused devices: <none>
here is what dmesg has to say: (some of it looks like repeats but some
of it is very slightly different too)
BUG: warning at drivers/...
2009 Feb 09
0
ROracle - ORA-02005: implicit (-1) length not valid for this bind or define datatype
...define datatype
##################################################################
##################################################################
> library(ROracle)
Loading required package: DBI
>
> ora <- dbDriver("Oracle")
>
> con <- dbConnect(ora, user = "uuuuu", password = "pppp" , dbname = "dddd")
>
> dafra01 <- data.frame(N1=rep(c(10),10),C1=rep(c("11"),10),N2=rep(c(12),10),stringsAsFactors=FALSE)
>
> ps <- oraPrepareStatement(con=con, statement="insert into tmp_r (N1,C1,N2) values(:1,:2,:3)&...
2012 Sep 16
12
Setting up XEN domU causes RAID5 to fail?
...2 blocks super 1.2 level 5, 512k chunk, algorithm 2 [5/2]
[_UU__]
md1 : active raid5 sda4[5](F) sde4[6](F) sdd4[7](F) sdc4[2] sdb4[1]
209713152 blocks level 5, 512k chunk, algorithm 2 [5/2] [_UU__]
md0 : active raid1 sda1[0] sde1[4] sdd1[3] sdc1[2] sdb1[1]
511936 blocks [5/5] [UUUUU]
If I check the drives I get informed that the md superblock has vanished on
the missing drives.
A reboot fails, because the RAID5''s are out of sync, and I have to go into
the busybox shell in order to repair them.
After repairing, and forcing a fsck, the system checks out again as g...