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bio website maclife.net/wiki
location China 中国
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visits member for 2 years, 11 months
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// unsigned char *p;
// Map<String,Object> map;
-- SELECT Name FROM ab
-- INNER JOIN cdr ON ab.PhoneNumber=cdr.PhoneNumber
/* pre {font-family: 'Ubuntu Mono';} */
<!-- <pre>&copy; right?</pre> -->
// function f() {}
# echo -e "your message:\n$(fortune)" | \
# gpg -e --clearsign -o - -r your@address.com 
REM if ""%1"" == """" goto default
; exten => 911,1,Answer()
svn commit -m "to be continue"

Apr
16
comment Two arrays have slightly different array size with same size disks/partitions, why?
I'm not sure if it's the write intent bitmap caused the difference, highly doubt it (because it will not take many spaces). I asked same question in linux.raid mailing list, Mikael Abrahamsson guess it's because of different data offset, which I believe it (but still no explanation for it). spinics.net/lists/raid/msg46175.html
Apr
3
awarded  Notable Question
Mar
26
comment Two arrays have slightly different array size with same size disks/partitions, why?
I just did a quick RAID creation test on loop devices in CentOS 6.5 (mdadm v3.2.x) and Fedora 20 (mdadm v3.3), found out that it's not the size overhead of RAID 6. Size of RAID 5 & RAID 6 are identical in same OS, but they are different between CentOS and Fedora. Test script: MAKEDEV /dev/loop; truncate -s 10M hdd5{1..5} hdd6{1..5}; for hdd in {1..5}; do losetup /dev/loop5$hdd hdd5$hdd; losetup /dev/loop6$hdd hdd6$hdd; done; mdadm -C /dev/md5 -l 5 -n 4 -x 1 /dev/loop5{1..5}; mdadm -C /dev/md6 -l 6 -n 5 /dev/loop6{1..5}; mdadm -D /dev/md5; mdadm -D /dev/md6
Mar
26
comment Two arrays have slightly different array size with same size disks/partitions, why?
@Ouki, you mean the metadata size overhead, or the performance overhead?
Mar
25
asked Two arrays have slightly different array size with same size disks/partitions, why?
Mar
4
awarded  Great Question
Feb
10
awarded  Popular Question
Feb
10
comment Why yum resolve dl.google.com to an IPv6 address?
just added my answer with wireshark screenshot.
Feb
10
accepted Why yum resolve dl.google.com to an IPv6 address?
Feb
10
answered Why yum resolve dl.google.com to an IPv6 address?
Jan
8
comment Unable to reconnect to a WiFi network on Fedora 20?
i'd encountered similar problem when i connect to another wifi AP in another place. i guess the reason could be weak signal in linux (Fedora 19) caused this problem, because if i switched to Windows system, the connection will be very steady
Nov
11
comment Where do my ANSI escape codes go when I pipe to another process? Can I keep them?
thanks for the unbuffer information, it help my IRC bot's output like the output in shell.
Oct
6
awarded  Popular Question
Oct
1
awarded  Popular Question
Sep
14
comment Why yum resolve dl.google.com to an IPv6 address?
the actual reason is our "great firewall" blocked the ip addresses which resolved by the DNS server, so yum (or the backend libcurl?) may try every IPv4 address until the last IPv6 address failed to connect. I'll choose this answer which closest to the reason. after an IP address of dl.google.com which is not blocked by GFW to /etc/hosts, 'yum update' works fine now.
Sep
12
comment What does the Windows flag in the Linux logo of kernel 3.11 mean?
well, Linus Torvalds had reverted the logo to previous version. git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/…
Sep
4
awarded  Notable Question
Sep
4
awarded  Mortarboard
Sep
4
awarded  Popular Question
Sep
4
awarded  Good Question